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Pentium® Processor Flexible Motherboard Design Guidelines
AP-579 APPLICATION
Order Number: 243187-002
Information this document provided connection with Intel products. license, express implied, estoppel otherwise, intellectual property rights granted this document. Except provided Intel's Terms Conditions Sale such products, Intel assumes liability whatsoever, Intel disclaims express implied warranty, relating sale and/or Intel products including liability warranties relating fitness particular purpose, merchantability, infringement patent, copyright other intellectual property right. Intel products intended medical, life saving, life sustaining applications. Intel make changes specifications product descriptions time, without notice. Designers must rely absence characteristics features instructions marked "reserved" "undefined." Intel reserves these future definition shall have responsibility whatsoever conflicts incompatibilities arising from future changes them. Pentium® processor contain design defects errors known errata. Current characterized errata available request. Contact your local Intel sales office your distributor obtain latest specifications before placing your product order. Copies documents which have ordering number referenced this document, other Intel literature, obtained from: Intel Corporation P.O. 7641 Prospect 60056-7641 call 1-800-879-4683 visit Intel's website http:\\www.intel.com Copyright Intel Corporation 1996, 1997. Third-party brands names property their respective owners.
CONTENTS
PAGE 1.0. INTRODUCTION 1.1. Benefits Flexible Motherboard 2.0. PROCESSOR DESIGN CONSIDERATIONS 2.1. Overview Pentium® Processor Family. 2.2. Pinout Considerations. 2.3. Processor Identification. 3.0. FLEXIBLE MOTHERBOARD IMPLEMENTATION 3.1. Voltage Supply Implementation Overview. 3.2. Distinct Power Planes. 3.3. Split Plane Processor/Unified Plane Processor Design Configurations. 3.4. Power Plane Connections Voltage Regulator Shutdown. 3.5. Voltage Supply Implementation Options. 3.5.1. 2.8V/3.3V AUTO-CONFIGURABLE REGULATOR 3.5.2. 2.8V REGULATOR BUILD OPTION 3.5.3. SAFEGUARDING PENTIUM® PROCESSOR WITH MMXTECHNOLOGY FLEXIBLE MOTHERBOARD 3.6. Split Power Plane Layout. 3.7. Decoupling 3.7.1. BULK DECOUPLING. 3.7.2. HIGH FREQUENCY DECOUPLING. 3.7.3. DECOUPLING RECOMMENDATIONS 3.7.4. PLACEMENT DECOUPLING CAPACITORS 3.8. Signal Routing Guidelines.
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PAGE 3.9. Thermal Physical Space Considerations 3.9.1. VOLTAGE REGULATOR THERMAL DESIGN CONSIDERATIONS 3.9.2. DESKTOP SYSTEM THERMAL DESIGN CONSIDERATIONS 3.10. BIOS/Software Considerations.28 3.11. Dual Processor Design Considerations.29 A1.0. VOLTAGE REGULATOR MODULE.33 A1.1. Header A1.2. Shorting Block Pass-Through Module.35 A1.3. Processors Running A1.4. Pentium® Processor with MMXTechnology.35 A1.5. Header Placement.35 A2.0. VOLTAGE REGULATOR MODULE HEADER DIAGRAM A3.0. VOLTAGE REGULATOR MODULE QUICK REFERENCE.37 B1.0. SOCKET DIAGRAM.39 B2.0. SOCKET QUICK REFERENCE.41 C1.0. LINEAR SWITCHING REGULATOR SOLUTIONS D1.0. REGULATOR VENDOR SOLUTIONS CONTACT LIST E1.0. LIST RELATED TOOLS COLLATERAL E1.1. Public Documentation.53 E1.2. Collateral Available Under Non-Disclosure Agreement.54 E2.0. REFERENCES.54
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TABLES Table Pentium® Processors Pentium OverDrive® Processors Their Differences Table BF1-0 Core/Bus Ratio Selection Pins.10 Table CPUID Information.11 Table Three Types Pentium® Processor Power Planes.14 Table Decoupling Recommendations Processor Core Voltage Islands Table Typical Processor Voltage Supply Configuration with VRM.34 2.8V/3.3V/VRE Linear Regulator Solutions.43 2.8V/3.3V/VRE Switching Regulator Solutions.45 On-board Regulators.47 Voltage Regulator Modules.48 Socket Header Decoupling Capacitors Shorting Blocks.50 Resistors.50 3.3V Clock Driver Suppliers Product Information System Design Documentation.54 System Design Tools.54
FIGURES Figure Pentium® Processor Flexible Motherboard.5 Figure Assignments CPUID.10 Figure Typical Power Planes Desktop Pentium® Processor Flexible Motherboard.12 Figure Pentium® Processor Family Power Plane Characteristics.14 Figure Unified Plane Current Flow Split Plane Current Flow Figure MOSFETs Connect/Disconnect Power Planes Figure Regulator Shutdown Phenomenon.17 Figure Auto-configurable Voltage Regulator Solution Figure 2.8V Voltage Regulator Designed Build Option.20 Figure External Safeguard Circuit Prevent Processor from Booting Figure External Safeguard Reducing Output Voltage Figure Processor Power Island Layout.22 Figure Typical Capacitor Characteristics Figure Example Processor Decoupling Capacitor Placement.26 Figure Thermal Physical Space Requirements Pentium OverDrive® Processor with MMXTechnology.28 Figure Layout Flexible Motherboard.30 Figure Voltage Regulator Modules.33 Pinout Side View.36 Socket Pinout-Top Side View Socket Pinout-Pin Side View
1.0. INTRODUCTION
This document provides guidelines designing Pentium® processor family flexible motherboard. Pentium processor family flexible motherboard, shown Figure single motherboard design that support various members Pentium
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processor family including Pentium processors 200, Pentium processors with MMXtechnology, Pentium OverDrive® processors, future Pentium OverDrive processors with technology.
Pentium® processors with MMXtechnology
166MHz 200MHz
200MHz
166MHz
150MHz
133MHz
120MHz
100MHz
90MHz
Future Pentium® OverDrive® processors with MMXtechnology
Pentium® OverDrive® processors
75MHz
318701
Figure Pentium® Processor Flexible Motherboard
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technology upgradability 5.0A 3.3V; however, Pentium processor with technology core current draw 5.7A 2.8V. NOTE current draw processor dependent processor belonging Pentium processor family utilized Socket provided system design provides adequate current.
Pentium processor family flexible motherboard should support following features:
Split Power Islands: Pentium processor family flexible motherboard should accommodate split (separate) power islands accept processors that have split core voltage planes. Pentium processor Pentium OverDrive processor have unified core power plane internal processor package. Pentium processor with technology future Pentium OverDrive processor with technology have split power planes internal processor package. internal power planes Pentium processor with technology receive different voltages (i.e., 2.8V Core 3.3V I/O). 3.3V Power Source: Pentium processors 200, Pentium OverDrive processors future Pentium OverDrive processor with technology receive 3.3V 3.135 3.6V) from processor socket operation. Pentium processor family flexible motherboard should provide 3.3V using system power supply unit voltage regulator. 2.8V Power Source: Pentium processor with technology receives 2.8V (±100 core. Pentium processor family flexible motherboard should provide support 2.8V power source through either on-board 2.8V voltage regulator Voltage Regulator Module (see Appendix Socket Pentium processor family flexible motherboard should implement Socket assignments vary according processors, Socket processor socket designed accept processors Pentium processor family (i.e., Pentium processors 200, Pentium OverDrive processors, Pentium processors with technology future Pentium processors with technology) regardless their differences assignments power plane implementation. Socket 321-pin socket superset older 320-pin Socket Socket provides option capability support both unified-plane processors split-plane, dual-voltage supply processors requires that PICCLK driven 3.3V levels. Socket electrical specifications list maximum current future Pentium processors with
Local Decoupling: Pentium processors 200, Pentium OverDrive processors, Pentium processors with technology future Pentium OverDrive processors with technology cause rapid fluctuation current during transitions between "low-power" states "active" states. Pentium processor family flexible motherboard provides accurate adequate decoupling capacitors near processor socket prevent violation voltage supply range specification. Multiple Frequencies: Pentium processors 200, Pentium OverDrive processors, future Pentium OverDrive processors with technology support external frequencies MHz, MHz. Pentium processor with technology supports external frequencies MHz. Pentium processor family flexible motherboard implemented with system logic compatible with timing parameters these frequencies. Bus-to-Core Ratio: Pentium processor family flexible motherboard should provide jumpers fraction strapping options allow flexibility configuring external frequency internal core frequency ratio. bus-to-core ratios either 1/3, 2/5, 2/3. order support Pentium processors Pentium processors with technology, selection jumpers should allow high logic setting both fraction pins (BF1 BF0).
NOTE Pentium OverDrive processors future Pentium OverDrive processors with technology internally configure fraction, jumper changes
required when Pentium OverDrive processor future Pentium OverDrive processor with technology installed Socket system.
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1.1.
Benefits Flexible Motherboard
Thermal Mechanical Specifications: Pentium processor family flexible motherboard should designed meet thermal mechanical specifications Socket Specification, Rev. 3.0. BIOS Support: Each processor stepping assigned unique identification feature signature. execution CPUID instruction will retrieve these signatures identification. Pentium processor family flexible motherboard provides system BIOS capable supporting Pentium processor 200, Pentium OverDrive processors, Pentium processors with technology future Pentium processors with technology steppings. Through CPUID instruction, BIOS determine whether processor supports certain features like APIC technology. (For more details, refer application note AP-485, Intel Processor Identification with CPUID Instruction. Appendix 3.3V Clock Drivers: Clock inputs Pentium processors 200, Pentium OverDrive processors, Pentium processors with technology future Pentium OverDrive processors with technology accept 3.3V clock drivers tolerant. Pentium processor family flexible motherboard provides 3.3V clock driver (for PICCLK) ensure compatibility with Pentium processors 200, Pentium OverDrive processors, Pentium processors with technology future Pentium OverDrive processors with technology.
Producing flexible motherboard design Pentium processor family offers several benefits:
Offers various price/performance options: flexible design, when populated different members Pentium processor family, provide wide range price/performance options. Flexibility also achieved through assembly time options other components motherboard. example, external caches asynchronous SRAM cost effectiveness pipelined burst SRAM higher performance. Synchronous burst DRAM replace extended data (EDO) DRAM main memory maintain performance costeffective platforms with optional external cache memory. Reduces design validation effort associated with multiple designs: board does have revised every proliferation processor thus reducing design validation efforts. Instead, board designed accept various processors that populated build-time. Reduces inventory manufacturing costs: Only motherboard design manufactured maintained inventory. This reduces overall inventory management manufacturing costs. varying product demand, board populated with appropriate processor meet current market demand. Reduces debug technical support costs: Instead several, only motherboard debugged. field engineers other support personnel need only trained base motherboard design thus reducing overall technical support efforts.
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Pentium OverDrive processor 125/150/166 upgrade processor Pentium processor 75/90/100-based systems. plugs into either Socket Socket based designs. Pentium OverDrive processors end-user, single-chip processor upgrade products Pentium processor systems that speed nearly software applications binary compatible with Pentium processor. future Pentium OverDrive processor with technology 125/150/166/180/200 end-user, single chip, processor upgrade Pentium processor 75/90/100/120/133-based Socket Socket designs. future Pentium OverDrive processor with technology 180/200 also upgrade Pentium processor 150/166/180/200-based designs technology, with lower overall performance increase. future Pentium OverDrive processor with technology will only supported Socket 7-based designs.
2.0.
PROCESSOR DESIGN CONSIDERATIONS
This chapter describes differences between various processors that need considered when designing Pentium processor family flexible motherboard.
2.1.
Overview Pentium® Processor Family
Table shows members Pentium processor family that supported flexible motherboard highlights their respective electrical/thermal specifications. following brief description Pentium processors 200, Pentium OverDrive processors, Pentium processors with technology future Pentium OverDrive processors with technology processors that supported flexible motherboard. Please refer Appendix order obtain specifications each processor. Pentium processor 3.3V processor that operates 100, 120, 133, 150, core speeds (50, external speeds). This unified plane processor that uses 3.3V [Standard (3.135V 3.6V) (3.4V 3.6V) voltage] pins. Pentium processor with technology 166/200 newest addition Pentium processor family. Several architectural enhancements have been made: internal data code cache sizes have each been doubled from Kbytes Kbytes, branch prediction been improved, support Intel technology been added. technology extension Intel Architecture (IA) instruction which adds opcodes register set. Pentium processor with technology operates core frequencies external speeds). Pentium processor with technology uses 2.8V internal core while operates 3.3V provide full compatibility with existing chipset SRAM). pin, package, functionally compatible with Pentium processor operating system transparent. Pentium processor with technology's PICCLK buffers tolerant should only 3.3V clock inputs.
2.2.
Pinout Considerations
processors that supported flexible motherboard, most signals compatible each other. differences noted below:
VCC2 VCC3 Pentium processor with technology, internal logic isolated from core logic that core lower voltage (2.8V) order obtain faster core frequencies reduce overall power consumption. logic remains 3.3V remain compatible with existing chipsets cache SRAM. voltage core logic supplied through VCC2 pins voltage logic supplied through VCC3 pins. motherboard design therefore splits processor power plane into separate 2.8V core voltage island 3.3V voltage island. VCC2DET#: This signal defined Pentium processor with technology indicate system that processor installed processor socket uses isolated 2.8V core supply VCC2 pins. This internally connected ground Pentium processor with technology. Pentium processors 200, Pentium OverDrive processors, future Pentium OverDrive processors with
technology, this defined (Internal Connect). This signal pulled high Pentium® Processor Core Frequency Frequency Frequency Ratio Clock Level Core Supply Supply ICC2
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externally flexible motherboard left connect otherwise.
Table Pentium® Processors Pentium OverDrive® Processors Their Differences Pentium Processor with MMXTechnology 166, 2/5,1/3 3.3V Pentium OverDrive® Processor 125, 150,
Future Pentium OverDrive Processor with Technology 125, 150, 166, 180, 2/5,
100, 120, 133, 150, 166, 1/2, 2/3, 2/5,1/3 3.3V
3.3V 3.135 3.6V 3.135 3.6V Connected ICC3 4330mA 200mA 15.0 None Unified Unified
3.3V
3.135V 3.60V (STD); 2.7V 2.9V 3.40V 3.60V (VRE) 3.135V 3.60V (STD); 3.135V 3.60V 3.40V 3.60V (VRE) Connected ICC3 4600mA (200 MHz) 2650mA MHz) Applicable
5700mA (200 MHz) 4750mA (166 MHz) 650mA (200 MHz) 540mA (166 MHz) 200mA 15.7 (200 MHz) Split Split 296-pin PPGA CPGA
Note
5000mA (200 MHz) 4330mA(125-180 MHz)
Max. Power
15.5W (200 MHz) None None Unified Unified 296-pin PPGA CPGA
17.0W (200 MHz) 15.0W (125-180 MHz)
VCC2 Pins VCC3 Pins VCC5 Pins External Plane Type Internal Plane Type Package Type
Unified Split Split
320-pin CPGA 320-pin CPGA
NOTES: refers VCC3 (I/O) supply current. refers VCC2 (Core) supply current. refers supply current. This used power fan/heatsink Pentium® OverDrive processors. Pentium OverDrive processors future Pentium OverDrive processors with technology require frequency ratio changed when upgraded. number shown represents worst case maximum current/power highest available frequency. When future Pentium OverDrive processor with technology installed split plane designs, 4600 3.3V drawn through VCC2 pins from VCC3 pins. future Pentium OverDrive processor with technology will only supported Socket designs.
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BF1-0: fraction selection pins determine core frequency ratio. pins sampled processor RESET, will sampled processor again until another cold-boot (1ms) assertion RESET. signal pins indication speed, only ratio processor core with respect bus. Pentium OverDrive processor future Pentium OverDrive processor with technology require pins changed when upgraded will operate properly with fraction ratio selected processor being replaced. Table summarizes operation pins Pentium processors Pentium processors with technology. CLK, PICCLK: clock inputs Pentium processor with technology tolerant. clock inputs processor flexible motherboard driven appropriate 3.3V clock driver. Driving clock volts also compatible with Pentium processor 200, Pentium OverDrive processor, future Pentium OverDrive processor with technology.
2.3. Processor Identification
CPUID instruction used provide information BIOS other software about vendor, family, model, stepping processor. input value loaded into register prior executing CPUID instruction will return identification signature register. Figure shows assignment CPUID instruction. (For more details, refer application note AP-485, Intel Processor Identification with CPUID Instruction. Appendix
(reserved)
type family
model stepping
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Figure Assignments CPUID Table provides CPUID information different processors that supported flexible motherboard.
Table BF1-0 Core/Bus Ratio Selection Pins Pentium® Processor Frequency Ratio
Value
Value
Pentium Processor with MMXTechnology Frequency Ratio
(Default)
(Default)
Reserved
NOTES: Pentium processors with maximum rated core frequency less than have only fraction ratio defined (1:1). ratio defined Pentium® processor with MMXtechnology Pentium processor 200. Defaults ratio left unconnected Pentium processor with technology. Pentium processor with technology, internal pull-up resistor, internal pull-down resistor. Defaults ratio left unconnected Pentium processor 200. Pentium processor 200, pins have internal pull-up resistors. value external pull-down resistors used BF0/BF1 pins should ohms less. value external pull-up resistors used BF0/BF1 pins should Kohms less.
Table CPUID Information Type Bits(13:12)
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Family Bits(11:8) 0101 0101 0101 0101
Model Bits(7:4) 0010 0100 0010 0100
Stepping Bits(3:0) xxxx xxxx xxxx xxxx Pentium®
Description processors (75, 100, 120, 133, 150, 166, 200)
Pentium processor with MMXtechnology (166, 200) Pentium OverDrive® processor Pentium processor (75, 100) Future Pentium OverDrive processor with technology Pentium processor (75, 100, 120, 133, 150, 166, 200)
NOTES: definition type field OverDrive® processor errata Pentium® OverDrive processor will always return type.
3.0.
FLEXIBLE MOTHERBOARD IMPLEMENTATION
This chapter describes implementation split plane flexible motherboard using Socket
3.1.
Voltage Supply Implementation Overview
voltage supply solution flexible motherboard supplies minimum 0.4A 3.3V VCC3 4.6A 3.3V VCC2 support future Pentium OverDrive processor with technology. required that both power planes supplied same source. addition, Pentium OverDrive processor future Pentium OverDrive processor with technology also supply power fan/heatsink. typical single processor system, 3.3V power supply uses approximately power 3.3V components (i.e. processor, cache chipset). Pentium processor with technology, 2.8V regulator draws approximately 5.7A 2.8V processor core while 3.3V power supply should require approximately 3.3V cache chipset. Additional 3.3V devices such 3.3V DRAM require additional power. Actual power requirements should calculated specific design.
order support various members Pentium processor family with different voltage requirements, flexible motherboard should include provisions both 2.8V 3.3V supply voltages processor. power supply pins Pentium processor with technology split into separate VCC2 VCC3 pins. Socket definition splits pins Socket into VCC2 pins VCC3 pins. These pins connected appropriately processor core voltage island processor voltage island. Pentium processor with technology uses 5.7A 2.8V (200 MHz) core from supply voltage solution. 3.3V voltage Pentium processor with technology supplied system (either through 3.3V power supply through 3.3V voltage regulator motherboard). voltage provided core future Pentium OverDrive processor with technology supplied voltage regulator, internal OverDrive processor package, powered 3.3V VCC2 pins. powered directly from 3.3V VCC3 pins.
3.2.
Distinct Power Planes
typical desktop flexible motherboard contains maximum four different power planes. Pentium processor will directly plug into these planes (VCC2, VCC3) indirectly connected 3.3V power supply (3VPOWER SUPPLY) through VI/O (VCC3) power plane. Figure most economically flexible motherboard design, recommended that VI/O plane simply connected
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motherboard's 3VPOWER SUPPLY jumpers resistors. Therefore, excluding main power plane, Pentium processor family flexible motherboard have minimum distinct motherboard power planes: VCORE VI/O 3VPOWER SUPPLY. However, some board designers power VI/O plane with voltage instead keep isolated from 3VPOWER SUPPLY. This will then maintain total possibility four separate power planes.
least 5.7A 2.8V Pentium processor with technology.
VCORE (Vcc2)
(Vcc3)
3.3V 3Vpower supply
(Vcc5)
Socket
318703
Figure Typical Power Planes Desktop Pentium® Processor Family Flexible Motherboard
power plane distinctions described below. VCORE This power plane connected VCC2 power pins Pentium processor family's Socket connector (see Figure When Pentium processor installed system, this plane will typically connected VI/O plane through resistors, jumpers, internal power plane Pentium processor. However, case Pentium processor with technology, VCC2 VCC3 planes remain completely electrically separate. Also, future Pentium OverDrive processor with technology will connect VCC2 VCC3 through internal power planes. Depending upon which processor being supported, VCC2 plane require either discrete 2.8V voltage regulator, configurable 2.8V/3.3V/VRE voltage regulator. VCC2DET# signal used select between 2.8V 3.3V/VRE configurable VCORE voltage regulator. VCORE power plane uses voltage regulator that supply least 5.0A 3.3V Pentium processor
VI/O This power plane connected VCC3 power pins Pentium processor family's Socket connector. VI/O plane also connected motherboard's 3VPOWER SUPPLY plane motherboard power supply used instead 3.3V/VRE voltage regulator). Therefore, VI/O plane require either electrical connection motherboard's 3VPOWER SUPPLY, discrete 3.3V/VRE voltage regulator. When isolated from 3VPOWER SUPPLY, processor's VCC3 pins only require little 0.65A MHz) case Pentium processor with technology. However, order minimize number discrete 3.3V voltage regulators flexible motherboard, recommended that VI/O plane connect processor's VCC3 pins with motherboard's cache, chipset 3.3V DRAM. Since Pentium processor unified-plane processor) VCORE VI/O plane supplied with voltage, VCORE VI/O plane need isolated from 3.3V components 3VPOWER SUPPLY. Figure auto-configurable flexible motherboard should make provisions connecting/disconnecting VI/O 3VPOWER SUPPLY order accommodate processors running voltage 3.3V voltage (see next section). 3VPOWER SUPPLY This power plane motherboard's 3.3V power plane (not confused with motherboard's power plane). This typically powers 3.3V cache, chipset DRAM components Pentium processor family flexible motherboard. cost effective motherboards, 3VPOWER SUPPLY typically connected VI/O power plane; however, processor unified-plane processor, this plane will then connected both VI/O VCORE power planes well (see next section). split plane, dual voltage processor, like Pentium processor with technology, 3VPOWER SUPPLY plane will separated from VCORE power plane.
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future Pentium OverDrive aprocessor with technology will internally connect VCORE VI/O. 5VPOWER SUPPLY- This motherboard's power plane. This plane will power components such DRAM, keyboard controller, mouse, FLASH BIOS memory, Logic, some components connectors.
3.3.
Split Plane Processor/Unified Plane Processor Design Configurations
Currently, Pentium processor family line divided into three power plane categories (see Figure Table Pentium processor Pentium OverDrive processor have internal unified power plane. This means that VCC2 VCC3 power pins connected single power plane internal processor package. processor operated applying 3.3V/VRE both VCC2 power pins VCC3 power pins simultaneously, applying 3.3V/VRE power either VCC2 pins VCC3 pins separately. Since internal power plane unified, power from VCC2 pins will flow VCC3 pins vice-versa. designing flexible motherboard options, VCORE VI/O power planes electrically isolated they shorted together jumpers resistors. case where VCORE VI/O power planes isolated (and there jumpers resistors combine motherboard power planes), Pentium processor Pentium OverDrive processor will serve means conduction that shorts power planes together provided current flow through processor does exceed Figure This scenario would never occur with Pentium processor with technology, with future Pentium OverDrive processor with technology, because their internal split power plane design.
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VCC2 VCC3 VCC2 VCC3 VCC2 VCC3
3.3V
3.3V
3.3V
Pentium® Processor, Pentium OverDrive Processor (Unified-plane Processors) Vcc2 Vcc3 3.3V
3.3V
2.8V
Pentium processor with MMXtechnology (Split-plane Processor) Vcc2 2.8V, Vcc3 3.3V
Pentium OverDrive processor with technology (Split-plane Processor) Vcc2 3.3V VRE, Vcc3 3.3V VR318704
Figure Pentium® Processor Family Power Plane Characteristics
Table Three Types Pentium® Processor Power Planes Category Unified Plane processors with Single Voltage Input (VCC 3.3V/VRE) Split-Plane processors with Dual Voltage Input (VCC2 2.8V VCC3 3.3V/VRE) Pentium® Processor processors MHz, Pentium OverDrive® processors 125/150/166 Pentium processors with MMXtechnology (166, MHz)
Split-Plane processors with Single Voltage Future Pentium OverDrive processors with technology Input (VCC =3.3V/VRE) 125/150/166/180/200
3.3V
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318705
Figure Unified Plane Current Flow Split Plane Current Flow Pentium processor with technology internal split power plane which means that VCORE VI/O power planes, which internal processor package, electrically isolated. proper processor operation, VCC2 pins have supplied with 2.8V while VCC3 pins have supplied simultaneously with 3.3V/VRE. future Pentium OverDrive processor with technology also internal split power plane which means that VCORE VI/O power planes, internal processor package, also electrically isolated. order properly operate this OverDrive processor, VCC2 pins VCC3 pins must always powered simultaneously with 3.3V/VRE. NOTE power planes have powered same voltage source.
3.4.
Power Plane Connections Voltage Regulator Shutdown
flexible motherboard option, VCORE VI/O power planes have option being connected resistors, jumpers, Pentium processor Pentium OverDrive processor, shorting blocks, even MOSFETs (see Figure MOSFETs typically implemented flexible motherboards with auto-detect circuit ideal solution designing "automatic" power plane selection device using VCC2DET# input.
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VCC2
MOSFET
voltage regulators current share; however, this implementation specific option designer's discretion.
VCC3
VCC2DET# VCC2DET#
3.5.
VCC2 connects VCC2 disconnects from
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Voltage Supply Implementation Options
There several voltage supply implementation options support different Pentium family processors flexible motherboard. following options will discussed this section: Using 2.8V/3.3V auto-configurable voltage regulator. Using on-board 2.8V regulator build option. Using Voltage Regulator Module (VRM). Refer Appendix 3.5.1. 2.8V/3.3V AUTO-CONFIGURABLE REGULATOR
Figure MOSFETs Connect/Disconnect Power Planes unified-plane processor plugged into flexible motherboard with voltage regulators, voltage regulators "shut down". voltage regulator attached VCC2 power pins will always have much higher current rating than voltage regulator attached VCC3 power pins because VCC2 plane directly powers processor core. When Pentium processor Pentium OverDrive processor plugged into system, current will flow from VCC2 plane VCC3 power plane shut down weaker voltage regulator (the weaker voltage regulator will detect increased current shut itself down). This acceptable provided maximum specification current flow across unified plane processor maintained (see Figure However, when split plane processor, like Pentium processor with technology future Pentium OverDrive processor with technology, inserted socket, regulators electrically isolated each continues function. Also, designer design motherboard such that
auto-configurable regulator circuit option supply voltage implementation flexible motherboard. This approach allows Pentium processors 200, Pentium OverDrive processors, Pentium processors with technology, future Pentium OverDrive processors with technology easily supported without need jumper/resistor configuration. Figure shows regulators that work together form autoconfigurable voltage solution.
2.8V/VRE Regulator 4.6A VRUnified-plane processor (200 MHz)
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3.3V Regulator 2.65A processor (Vcc3)
Cache Chipset
VCORE
Chipset
3.3V Regulator shut down when Unified-plane processor Inserted
318707
Socket
Cache
Figure Regulator Shutdown Phenomenon
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Cache chipset feed from this plane On-board 3.3V/VRE regulator
3.3V/VRE 2.8V/3.3V/VR
Vout Voltage (Core) Plane
On-board 2.8V/3.3V autoconfigurable regulator core
Socket
VCC2DET# from selects 2.8V 3.3V core regulator Both regulators current share when 3.3V installed 3.3V/VRE regulator shuts down jumpers required connect planes auto-configurable mode
VCC2DET# VCORE 2.8V, 3.3V VRE) VCC2DET# VCORE 3.3V VRE), 3.3V VRE)
318708
Figure Auto-Configurable Voltage Regulator Solution VCC2DET# pin, defined Pentium processor with technology Socket used steer voltage regulator supplying processor core correct voltage depending which processor socket. Pentium processor with technology, VCC2DET# always driven grounded). Pentium processor 200, Pentium OverDrive processor future Pentium OverDrive processor with technology, this internal connect; therefore, VCC2DET# signal trace needs external pull-up resistor that autoconfigurable regulator circuit does confuse Pentium processor with Pentium processor with technology apply incorrect input voltages. When unified-plane processor (Pentium processor Pentium OverDrive processor) plugged into Socket auto-configurable system, following events take place: VCC2DET# signal asserted 2.8V/3.3V/VRE voltage regulator toggles either 3.3V voltage. VCORE VI/O power planes automatically become electrically shorted (VCORE VI/O) because processor unifies these planes internal package. This within processor specification provided that total electrical current flowing through processor does exceed 2.8V/3.3V/VRE voltage regulator would have sized accommodate current draw other components attached VCORE VI/O plane. current should adequate power processor, cache chipset. 3.3/VRE voltage regulator will then shut itself down detects power flow much larger 2.8/3.3V/VRE voltage regulator. When split-plane, dual voltage processor (Pentium processor with technology) plugged into
Socket auto-configurable system, following events take place: VCC2DET# signal asserted 2.8V/3.3V/VRE voltage regulator toggles 2.8V voltage. VCORE VI/O power planes remain electrically isolated because processor splits these planes internal package. 3.3V/VRE voltage regulator continues function supply VI/O power plane which include both processor's VCC3 pins cache chipset VI/O plane. When split-plane, single voltage processor (future Pentium OverDrive processor with technology) plugged into Socket autoconfigurable system, following events take place: VCC2DET# signal asserted 2.8V/3.3V/VRE voltage regulator toggles either 3.3V voltage. VCORE VI/O power planes remain electrically isolated because processor splits these planes internal package. 3.3V/VRE voltage regulator continues function supply VI/O power plane which include both processor's VCC3 pins cache chipset VI/O plane. auto-configurable voltage regulator solution also designed-in manufacturing stuffing option. this case, both regulators designed-in only regulator populated board. This regulator needs provide enough current capability drive both core voltage planes. With only regulator system, resistors external jumpers also needed connect both core planes manufacturing time (for split-plane, single voltage processors). When second regulator 3.5.2.
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associated circuitry populated board, these jumpers removed left provide full auto-configurable capability. 2.8V REGULATOR BUILD OPTION
this implementation option, flexible motherboard configured manufacturing build assembly time either Pentium processor, (unifiedplane, single-voltage processor) Pentium processor with technology (split-plane, dual voltage processor)
Pentium OverDrive processors future Pentium OverDrive processors with technology intended consumer upgrade product unified-plane, single-voltage processors. shown Figure 2.8V voltage regulator designed-in populated when board configured support Pentium processor with technology. When 2.8V voltage regulator installed board, Motherboard build option jumpers resistors (i.e. #1206, watt, surface mount resistors) recommended connect core voltage planes split-plane, single voltage processors and, optionally, unifiedplane, single voltage processors well) approximate current carrying capability approximately amps (dependent upon quantity components). However, unified-plane processor will conduct current between core voltage planes without need jumpers/resistors. Conversely, when 2.8V voltage regulator assembled motherboard, jumper/resistor build option should added order isolate voltage planes.
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Cache chipset feed from this plane voltage supplied on-board regulator 3.3V power supply
3.3V/VR
Vout Voltage (Core) Plane
2.8V
On-board 2.8V regulator Pentium® processor with MMXTechnology installed build option
Socket
Min. jumpers installed connect both planes 3.3V CPU, removed Pentium® processor with MMXTechnology
318709
Figure 2.8V Voltage Regulator Designed Build Option
3.5.3.
SAFEGUARDING PENTIUM® PROCESSOR WITH MMXTECHNOLOGY FLEXIBLE MOTHERBOARD
Pentium processor with technology core operates 2.8V. Socket based flexible motherboard design that configured 2.8V should implement some type safeguarding mechanism protect Pentium processor with technology from getting wrong voltage. Operating Pentium processor with technology's core 3.3V could potentially cause damage processor. VCC2DET# defined Pentium processor with technology Socket used implement some type protection circuitry that used either disable voltage source prevent processor from booting wrong voltage detected. example circuit shown Figure used prevent RESET from being generated processor wrong core voltage detected. This circuit uses comparator compare core
voltage reference voltage (~2.8V). VCC2DET# grounded (for Pentium processor with technology) core voltage greater than reference voltage, output exclusive gate will which would signal chipset assert RESET. Similarly VCC2DET# high (for 3.3V processor), core voltage lower than reference voltage, chipset should allowed assert RESET. Another example safeguard implementation shown Figure approach here reduce output voltage core regulator (3.3V VRE) level VCC2DET# detected. This would simpler cheaper implementation designs that using adjustable voltage regulator, where output voltage level adjusted using resistor divider. shown Figure value resistor divider altered appropriately (bottom resistor shorted ground) when VCC2DET# indicates zero. This effectively reduce output voltage appropriate level Pentium processor with technology.
Vcc3
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VCC2DET#
Vcc3
Vcc3
Vcore Bias ~2.8V
chipset logic which RESETs PowerGood from Power Supply
LMC7211 LM311 Comparator
Vcore 2.8V 2.8V 3.3V 3.3V
Vcc2DET# Pentium processor with Technology Pentium processor Pentium processor with Technology Pentium processor
318710
Figure External Safeguard Circuit Prevent Processor from Booting
Vcore
Vcc3
Linear Adjustable Regulator
Switch
VCC2DET from
318711
Figure External Safeguard Reducing Output Voltage
3.6.
Split Power Plane Layout
Implementing power island existing power layer instead assigning separate power layer core more economical solution. separate voltage island isolated from other section power plane using gap. size determined analysis noise effects board manufacturing capabilities (typically mils).
Figure shows typical layout separate voltage islands processor area. shows core pins (VCC2) clustered side processor allow easy layout core voltage island. remaining pins periphery (VCC3) located other side part voltage island (refer Socket pinout, Appendix
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2.8V 3.3V Core Island 3.3V Island Core Island Island Includes 3.3V Cache SRAM, chipset etc.
Socket
318712
Figure Processor Power Island Layout island should also include other 3.3V components that interface with processor. typical configuration would include 3.3V cache SRAM, 3.3V chipset I/O, processor same 3.3V voltage island. This ensures that signals interfacing between processor other 3.3V components operate same voltage levels. This also avoid split plane crossovers these signals which recommended better signal quality reduced EMI/RFI effects. When using jumpers resistors connect power planes case single voltage processors), number jumpers should chosen provide enough current carrying capability. Insufficient number jumpers will result excessive voltage drop other reliability problems. flexible motherboard, minimum four (six recommended) zero-ohm, #1206, watt, surface mount resistors should used. Routing power source voltage islands should also carefully done avoid significant voltage drop processor increase thermal dissipation voltage islands. recommended that wide traces used prevent excessive voltage drop across power plane. Also vias through-holes cutting through power plane critical widths should avoided.
3.7.
Decoupling
small size processor core voltage island, isolation from motherboard power plane, support varied voltage requirements make proper decoupling island power plane voltage ground plane essential. Appropriate decoupling capacitors implemented voltage island near processor ensure that processor voltage stays within specified limits during normal transient conditions. There types decoupling that need considered: bulk decoupling high frequency decoupling.
3.7.1. BULK DECOUPLING processors supported flexible motherboard, power consumption transition from level much higher level vice versa) very rapidly. This happen during normal program execution; however, higher surge current typically occurs when entering exiting Stop Grant state. Another example when executing HALT instruction which causes processor enter Auto-HALT Power Down state, transition from HALT back Normal state. NOTE Auto-HALT Power Down feature always enabled even when other power management features implemented. these examples cause abrupt changes power consumed processor. voltage supply (regulator) cannot respond sudden load change instantaneously, bulk storage capacitors with (Effective Series Resistance) used maintain regulated supply voltage during interval that falls between time current load changes point that regulated power supply output react change load. order reduce ESR, necessary place several bulk storage capacitors parallel. 3.7.2. HIGH FREQUENCY DECOUPLING 3.7.3. DECOUPLING RECOMMENDATIONS
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order minimize noise. processor driving large address data buses high frequencies cause transient power surges, particularly when driving large capacitive loads. high frequency decoupling, inductance capacitors interconnects recommended best high speed electrical performance. Inductance reduced shortening circuit board traces between processor decoupling capacitors much possible. Surface mount capacitors preferable, capacitors with long leads inductance circuit. capacitors should grade, with inductance reduce spikes.
Table shows processor decoupling recommendations flexible motherboard both processor core voltage islands. This based simulation testing voltage transients from processor effects motherboard decoupling. Spice modeling (modeling worst case current transients including processor package inductance, capacitance, routing, decoupling, voltage regulator output inductance, etc.) should used estimate amount decoupling capacitance processor voltage island. highly recommended that before committing change from decoupling capacitor recommendation, solution simulated variety variables components, temperature lifetime degradation.
High frequency decoupling required provide short, impedance path high frequency components such high current spikes
Table Decoupling Recommendations Processor Core Voltage Islands Quantity Processor Core Voltage Island Processor Voltage Island Value mOhms mOhms
0.45
Type Tantalum dielectric, ceramic Type
0.084
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3.7.4. PLACEMENT DECOUPLING CAPACITORS Figure shows example recommended processor decoupling capacitors (Table should placed inside respective voltage islands flexible motherboard. bulk capacitors should placed near processor inside voltage island ensure that supply voltage stays within specified limits during changes supply current during operation. capacitors should evenly distributed inside processor core voltage island inside around processor footprint. Figure also shows twelve capacitors evenly placed around processor, close processor VCC3 pins inside processor voltage island. this example, capacitors were placed side board. components assembled both sides board then these capacitors distributed between bottom sides. done this way, vias connecting capacitor pads power ground layer shared between capacitors bottom sides. This help reduce total overall capacitor inductance.
NOTES: capacitor should less than mOhms. capacitor should less than mOhms. capacitor (including inductance capacitor) should less than capacitor (including inductance capacitor) should less than This does include decoupling components other than processor 3.3V voltage island.
bulk decoupling, tantalum capacitors recommended over electrolytic capacitors. general, electrolytic capacitors degrade much faster rate, accurate, stable over temperature tantalum capacitors. high speed decoupling processor core voltage island, inductance, capacitors dielectric recommended. These capacitors only decouple processor core high frequency noise also control voltage during very fast transients (less than ns.) Figure shows that ceramic capacitors X7S) dielectric exhibit relatively stable capacitor characteristics over temperature compared capacitors type dielectric. example, typical operating temperature 45°C, dielectric lose initial rated capacitance. Measurement techniques ensure that motherboard designs within noise transients specification discussed following application notes (see Appendix order information).
Voltage Guidelines Pentium® Processors with MMXTechnology Processors Implementation Guidelines Processors with Specifications
Pentium®
Typical Capacitance Change Temperature
Temperature (Degrees Celsius)
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Temp. Coefficient (Spec.) X7R: Z5U: +22% -56% Y5V: +22% -82%
318713
Figure Typical Capacitor Characteristics
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100uF Tantalum (1206) 0.1uF (603)
318714
Figure Example Processor Decoupling Capacitor Placement traces connecting vias capacitor pads should kept short possible. cases where difficult reduce length circuit board trace, trace should made wider reduce trace inductance. strobes, data lines, address lines) when their return path interrupted. multi-layer board this return path power ground plane that adjacent signal layer directly under signal trace. this trace routed over break return path, return current find another longer path order maintain current continuity. increased area generated signal trace length this extended return path lead increased radiation levels from this signal trace. following guidelines should followed when routing high speed signals flexible motherboard: Clocks Strobes: These signals should routed over breaks reference plane return path. vias connect between signal planes should minimized, signal planes should within mils reference plane. Clock
3.8.
Signal Routing Guidelines
power plane flexible motherboard split into separate voltage islands, signal routing should done such minimize crossovers between voltage islands high speed signals. Signal routing between voltage islands system power plane should limited only those signals that absolutely need cross between island power plane. This avoid possible signal degradation from impedance discontinuity effects. Significant levels could generated electromagnetic radiation from high speed traces (such clocks,
signals should routed layer that adjacent ground layer. Data Address Lines: These signals routed signal layer. However, desired that number traces crossing over splits return path plane minimized ideally kept zero. Among this group, signals that need cross should routed signal layer near ground plane minimize radiated emissions (using via, trace taken down layer that referenced ground plane). four layer board, signal layer with least potential signal crossovers should placed adjacent power plane. Capacitive decoupling across split planes also used near signal crossovers (for those which cannot avoided) help reduce magnitude radiation. Within inch signal crossover violation, ceramic capacitor should placed across power plane gap, using capacitor every three trace violations (provided they within inch limit).
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dissipates most power MHz. system provides sufficient airflow dissipate this power from system prevent temperature entering fan/heatsink from exceeding 45°C. When (max) 45°C specification ambient temperature), Pentium OverDrive processor future Pentium OverDrive processor with technology fan/heatsink will keep (case temperature) within specified range, provided airflow through fan/heatsink unimpeded. ambient temperature should measured approximately 0.3" above fan/heatsink. Figure illustrates thermal physical space specifications Pentium OverDrive processor future Pentium OverDrive processor with technology. Physical space specifications future Pentium OverDrive processor with technology summarized follows:
1.75" vertical clearance above surface (opposite side) Socket when installed. 0.2" clearance around four sides package. Space greater than specified above end-user installation.
3.9.1. VOLTAGE REGULATOR THERMAL DESIGN CONSIDERATIONS
3.9.
Thermal Physical Space Considerations
thermal design system using flexible motherboard should based worst case power dissipation related thermal requirements processors that supported. Pentium processor Pentium processor with technology specified heatsinks which dependent upon entire system cooling solution. maximum case temperature these processors should exceed 70°C ensure proper operation. Heatsinks also need certain airflow order maintain their specified temperature. detailed information refer respective datasheet these processors (see Appendix addition, detailed discussion thermal design issues Pentium processor covered Pentium® Processor Thermal Design Guidelines (see Appendix Pentium OverDrive processors future Pentium OverDrive processors with technology shipped with integrated fan/heatsink cooling solutions. Although these fan/heatsinks remove heat from package, system should able dissipate added heat system. From Table future Pentium OverDrive processor with technology
Voltage regulators typically shipped with passive heatsinks heat dissipation require adequate airflow. 50°C ambient temperature, voltage regulators typically call airflow ensure proper cooling. airflow parallel surface voltage regulator ensure that heatsink receives adequate airflow. Refer your voltage regulator datasheet actual specifications. 3.9.2. DESKTOP SYSTEM THERMAL DESIGN CONSIDERATIONS
avoid localized heating processor, clear path adequate venting provided prevent spots from occurring. typical solution this thermal problem auxiliary front vents chassis, directing airflow across processor. While this solution would appear fairly simple, addition second actually cause problem intensify.
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back chassis. This heated easily raise temperature around processor beyond temperature specifications components system.
Unless front vents sufficient size, placement carefully considered, auxiliary actually cause heated processor other components recirculated within system rather than expelled
0.2" Above Surface Fan/Heat Sink 0.4" Airspace 45'C
0.3"
0.2"
Airspace
Package Surface Component
Airspace
Socket
318715
Figure Thermal Physical Space Requirements Pentium® OverDrive® Processor with MMXTechnology
When adding auxiliary system, size chassis vents deserves special consideration. most effective when pushed through blades comes from outside chassis. vents small inadequate velocity, gaps between chassis will cause from inside system drawn through fan, causing re-circulation heated air. position also critical. highest flow from blades from center fan. Care should taken block blades with frame supports. details Baby style chassis design suggestions, refer application note, Pentium® Processor Chassis Design Suggestions available CD-ROM (See Appendix
that support different processors flexible motherboard. BIOS code should CPUID instruction identify processor's CPUID signature (see Section 2.3.).
3.10.
BIOS/Software Considerations
flexible motherboard accommodate variety processors, BIOS designed such
Other considerations BIOS/software flexible motherboard include following:
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loops should independent prefetch algorithm.
Processor test code should independent model specific registers (MSR). Various processors have different caches, test registers, core architecture; e.g. Pentium processor with technology's cache size associativity different from Pentium processor resulting differences cache test registers. Since processors various core frequencies supported flexible motherboard, BIOS code should contain software timing
3.11.
Dual Processor Design Considerations
Pentium processor family flexible motherboard also designed planar board support uni-processor (UP) dual-processor (DP) modes. This provides flexibility using same motherboard populated with either socket (for system) sockets (for system.) Figure shows layout split plane flexible motherboard designed with sockets.
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Island
Secondary Socket
Core Island
Primary Socket (Socket
318716
Figure Layout Flexible Motherboard following needs considered when designing split plane flexible motherboard with sockets: should designed with Socket footprint. NOTE Pentium OverDrive processors future Pentium OverDrive processor with technology support dual processor operation. 296-pin socket should used secondary socket location.
power islands should laid such that processor cores share common island share another island. This minimizes number islands resulting better signal quality reduced effects. Socket should only used primary socket location. secondary socket footprint
primary socket location should always populated. nets should balanced
worst case timing when primary processor driving bus.
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single on-board voltage regulator VRM) should used support processor cores. on-board voltage regulator located close processor such that resistance inductance minimized. recommended decoupling capacitors (Section 3.3.) should used each processor location ensure that voltage each processor stays within specified limits during normal transient conditions. on-board voltage regulator VRM) needs provide sufficient current mode support processors unified single
motherboard power plane other 3.3V current requirements voltage island. MHz, split-plane, dual-voltage input, Pentium processor with technology system, this amounts approximately 11.4A 2.8V approximately 3-4A 3.3V typical current requirement. This assumes 5.7A 2.8V each processors, each dedicated 512K cache, approximately 1.0A chipset. Actual current requirements will vary based devices used. particular, current requirements should carefully analyzed implementing 3.3V DRAM powered from voltage island.
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APPENDIX
A1.0. VOLTAGE REGULATOR MODULThe Voltage Regulator Module (VRM) offers flexibility that allows processors with different voltage current requirements easily supported flexible motherboard. voltage converter with pinout capable converting system power supply voltage voltage necessary processor core. only difference between voltage regulator
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motherboard pinout ease changing processor supply voltage after assembly. following common pinout specification, variety VRMs developed third party vendors support Pentium processor family. Figure shows Voltage Regulator Module allows processors with different voltage current requirements supported flexible motherboard using interchangeable VRMs.
318717
Figure Voltage Regulator Modules
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Table summarizes typical processor voltage supply configuration with VRM.
When processor socket populated with either Pentium processor 200, Pentium OverDrive processor, Pentium processor with technology future Pentium OverDrive processor with technology, shorting block (pass-through module) installed socket which allows 3.3V from power supply on-board 3.3V regulator) pass through processor core voltage islands. When processor socket populated with Pentium processor 200, Pentium OverDrive processor, future Pentium OverDrive processor with technology running voltage, designed specific operating voltage used supply proper voltage core voltage islands. NOTE this case needs supply sufficient current support higher frequency upgrade processors (Pentium OverDrive processor future Pentium OverDrive processor with technology) when installed. When processor socket populated with Pentium processor with technology, 2.8V installed socket supply 2.8V processor core's VCC2 pins. 3.3V supplied processor provided this case. only supplies 2.8V core VCC2 pins. Pentium processor with technology VRM, however, will have provisions allow 3.3V from power supply pass through processor voltage island.
A1.1. Header
header (Header 30-pin shrouded header with retaining clips. retaining clips header hold place when installed properly. pins matrix. power pins capable carrying each. definition Header connections include: eight input voltage pins (four pins +3.3V input, four pins input); output voltage pins (seven VCORE pins that supply voltage processor core three VI/O pins that connect voltage island supplying processor VCC3 pins); three control signal pins (Disable input, Power Good output, Sense input); seven pins (Ground reference); +12V (+12V NC); (reserved future use). Refer Appendix pinout quick reference. input pins Header intended regulation 3.3V 2.8V other voltage necessary processor. 3.3V inputs also used regulation (e.g. 2.8V) source connect processor 3.3V plane through VI/O pins. +12V reference used some VRM's targeting specifications. recommended route +12V this pin.
Table Typical Processor Voltage Supply Configuration with Core Pentium® processor voltage (3.135V 3.60V) (3.40V 3.60V) Pentium processor with MMXtechnology Shorting Block 3.40V 3.60V 2.8V
Same Core Same Core 3.3V Power Supply on-board 3.3V regulator Same Core
Pentium OverDrive® processor Shorting Block future Pentium OverDrive processor with technology
NOTES: Core voltages supplied 3.3V power supply on-board 3.3V voltage regulator through header. 3.40V 3.60V supplies voltage processor core, other 3.3V components motherboard that interface with processor. able supply enough current typical) processor, 3.3V cache chipset processor voltage island.
primary output through VCORE pins. These pins supply voltage necessary processor core. VI/O output pins connected processor power plane supplying processor VCC3 pins. These VI/O pins connected VCORE pins VRMs that need power both processor core from single source (e.g. VRMs.) control signals DISABLE PWRGOOD header optional control signals provided system use. discretion decide whether implement circuitry these features. SENSE input, however, allows voltage regulators modules adjust their output voltage correct voltage drop through connectors power plane. SENSE should routed point center processor core voltage island. sense line make contact power plane through supporting decoupling capacitors. flexible motherboard designed with header, +3.3V inputs header connected directly VI/O pins through module (Pentium processor with technology VRM) supply processor voltage island. case where used, module connects VCORE output pins VI/O pins allow both islands obtain same voltage. best solution connecting output 3.3V supply both voltage planes, when unified plane processor used, through header. shorting block header connect 3.3V supply inputs VCORE VI/O outputs will provide best electrical performance.
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flexible motherboard. designed voltage range used Header supply processors. this case supplies voltage processor core, other 3.3V components motherboard that interface with processor. provides adequate current these components.
A1.4. Pentium® Processor with MMXTechnology
Pentium processor with technology supplies 5.7A 2.8V (200 MHz) processor core. will regulate down 2.8V from either 3.3V. 3.3V supplied processor will come from 3.3V system power supply on-board 3.3V regulator. Pentium processor with technology will have +3.3V inputs shunted VI/O outputs allow 3.3V inputs header pass through 3.3V processor voltage island. NOTE Voltage Regulator Module 2.8V processors will generate volts processor supply. This necessary space constraints module potential power limitations 3.3V components. modules 2.8V processors connect VI/O pins 3.3V input ease implementation. system provides adequate current 3.3V components VI/O plane.
A1.2. Shorting Block PassThrough Module
shorting block Pass-Through Module nothing more than connector which shorts 3.3V input pins VCORE VI/O pins header. This used with Pentium processor 200, Pentium OverDrive processor, future Pentium OverDrive processor with technology. shorting block allows voltage from 3.3V power supply on-board 3.3V voltage regulator pass through processor core voltage islands.
A1.5. Header Placement
header should located close processor socket. This prevent excessive voltage drop across power plane allow header easily located. recommended that header located further than inch from processor socket. NOTE specifications allow maximum mOhms resistance maximum inductance from processor VCC2 pins. header should placed such that provides easy routing core voltage islands from processor VRM. header located handle side Socket
A1.3. Processors Running VRThe Voltage Regulator Module concept allows (3.40V 3.60V) processors easily supported
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sides that closest handle side. Placing header side that opposite handle side recommended increases distance from processor, thereby increasing voltage drop across power plane. also makes routing core island more difficult. header placed handle side Socket should located closer than inch handle. This clearance allows easy access socket handle. Location header with respect processor socket should also take into consideration following:
Ease routing 3.3V voltage island from 3.3V power supply +3.3V inputs header. does impede installation full size add-in cards slots. located such that receives adequate airflow ensure proper cooling. airflow parallel surface ensure that heatsink receives adequate airflow. logic analyzer probes header placed such that does impede installation probes into processor socket.
distance from motherboard surface component overhang should kept minimum vertical distance 0.55".
A2.0. VOLTAGE REGULATOR MODULE HEADER DIAGRAM
+12V V/IO +3.3v +3.3V VCORE VCORE VCORE PWRGOOD SENSE VI/O VI/O +3.3V +3.3v VCORE VCORE VCORE VCORE DISABLE
318718
Pinout Side View
A3.0. VOLTAGE REGULATOR MODULE QUICK REFERENCThe definitions Voltage Regulator Module socket follows. Name +3.3V Type Input Function +12V DISABLE PWRGOOD SENSE Input Input Input Output Input
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+3.3V Supply, used processor regulation supply, control signal pull-up supply VI/O plane. +3.3V input connect output Pentium® OverDrive® processor with MMXtechnology module. Supply used Pentium processor family regulation 3.3V/VRE +12V Reference Supply, necessary some Voltage Regulator Modules targeting specifications. When driven high, this input will disable Voltage Regulator Module output output module will float. Power Good open collector output driven when output within valid levels. Sense provided regulator correct voltage drops across connector motherboard power plane. This signal should connected center VCORE plane. RESERVED Voltage Regulator Module Output. Processor power connection. Allows specify voltage. Ground Reference.
VCORE VI/O
Output Output Input
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APPENDIX
B1.0. SOCKET DIAGRAM
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VCC2
VCC2
VCC2
VCC2
VCC2
VCC2
VCC3
VCC3
VCC3
VCC3
VCC3
VCC3
VCC3 VCC3 VCC3
VCC2 VCC2 VCC2
VCC2
VCC3
VCC3
VCC3
PICCLK PICD0 VCC3
VCC2
PICD1
VCC2 VCC2
IERR#
TMS#
VCC3
PM0BP0
FERR#
TRST# CPUTYP VCC3
VCC3
PM1BP1 MI/O#
VCC2 VCC2
VCC3
CACHE#
VCC3
VCC3
AHOLD KEN#
STPCLK#
VCC2
EWBE#
VCC3 VCC3
BRDY#
VCC2
BRDYC#
FRCMC# PEN#
BOFF# PHIT# WB/WT# INIT
VCC2 VCC2
IGNNE# SMI# INTR D/P#
VCC3 VCC3 VCC3 VCC3
HOLD PRDY
PHITM#
PBGNT#
VCC2
PBREQ# APCHK# PCHK# VCC2 BE1# BE3# BE5# BE7# SCYC VCC2 VCC2 VCC3 VCC2 VCC3 VCC3 VCC3 VCC3 VCC3 VCC3
VCC2
SMIACT#
LOCK# HLDA ADS# D/C# HIT#
BREQ VCC2DET
A20M#
RESET
HITM# BUSCHK# BE0# W/R# VCC2
BE2# VCC2
BE4# VCC2
BE6#
ADSC#
VCC5
EADS#
VCC5
FLUSH#
318719
Socket Pinout-Top Side View
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VCC3
VCC3
VCC3
VCC3
VCC3
VCC3
VCC3
VCC2
VCC2
VCC2
VCC2
VCC2
VCC2
VCC2 VCC2
VCC3
VCC3
VCC2
VCC2
VCC3
PICCLK PICD0 VCC3
VCC3 VCC3 VCC3 VCC3
VCC2 VCC2 VCC2 VCC2 VCC2 VCC2 VCC2 VCC2 VCC2 VCC2 VCC2
PICD1
TMS#
IERR# FERR#
CPUTYP TRST# VCC3 VCC3
PM0BP0
PM1BP1 MI/O#
VCC3
VCC3
CACHE#
STPCLK#
AHOLD KEN#
VCC3 VCC3
EWBE#
BRDY#
FRCMC# PEN#
BRDYC#
BOFF# INIT WB/WT#
VCC3 VCC3 VCC3 VCC3
IGNNE# D/P# INTR SMI#
PHIT#
HOLD PRDY
PHITM#
PBGNT#
APCHK# PBREQ# PCHK#
VCC3 VCC3 VCC3 VCC3 VCC3 VCC3 VCC3 RESET VCC2 VCC2 SCYC VCC2 BE7# BE5# BE6# VCC2 VCC2 BE3# BE1# BE2# VCC2 VCC2 A20M#
SMIACT#
LOCK# ADS# HIT# D/C# HLDA
BREQ
BE4#
BE0# BUSCHK# HITM# W/R#
VCC2DET ADSC#
VCC5
EADS#
FLUSH#
VCC5
318720
Socket Pinout-Pin Side View
B2.0. SOCKET QUICK REFERENCSocket same definition Socket with exception following pins. Symbol CLK, PICCLK Type Name Function VCC2DET#
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Unlike some Pentium® processors, Clock Programmable Interrupt Controller Clock inputs Socket tolerant. These inputs driven appropriate 3.3V clock driver.
strictly mechanical keying device future Pentium OverDrive processors. hole socket permits installation higher speed Pentium OverDrive processors. corresponding Pentium OverDrive processors Internal Connect electrical purpose. This populated 320-pin packages.
VCC2 Detect defined Pentium processor with MMXtechnology which uses supply volts VCC2 pins. Pentium processor with technology, with core voltage volts, will always drive VCC2DET low. This used select proper core voltage from voltage regulator system supply. This driven high volt Pentium processors Pentium OverDrive processors. VCC2DET# system trace pull-up proper use. Socket power supply pins defined core voltage processors with separate power inputs. processors with single power supply requirement, these pins considered same VCC3 pins should driven with same power source. Socket power supply pins defined voltage processors with separate power inputs. processors with single supply requirement, these pins used conjunction with VCC2 pins power device.
VCC2
VCC3
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APPENDIX
C1.0. LINEAR SWITCHING REGULATOR SOLUTIONS
Appendix contains list Linear/Switching Voltage Regulator solutions. These lists inclusive 2.8V/3.3V/VRE Linear Regulator Solutions Electrical Part Number CS5206 Cherry CS5207A LT1575 FET) VOUT 3.3/ 3.3/ IOUT (Max) Power (Max) 8-pin SOIC TO-220 Q4'96 Remote Sense Vendor Package TO-220/ Sample
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accurate vendor solutions, they intended voltage regulator reference lists known 2.8V/3.3V/VRE regulator solutions. Please contact your vendor their latest product specifications.
Availability
Product
Q4'96
Linear Tech LT1577 (Dual) LT1580 LT1584 LT1585A LX8384 Linfinity LX8585 LX8586
3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VR
15.4 11.9 15.4 11.9 7.82 13.2 10.2 TO-220/ TO-263 TO-220/ TO-263 TO-220/ TO-263 TO-220/ TO-247 TO-220/ TO-263 TO-220 16-pin SOIC
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2.8V/3.3V/VRE Linear Regulator Solutions (Contd) Electrical Part Number LM2951 LM3411 VOUT 3.3/VRE 3.3/VRE IOUT (Max) Power (Max) 15.4 11.9 11.9 SO-8/ 5-pin 8-pin SOIC Remote Sense Availability Package SO-8 Sample Product RC5102 (Dual) EZ1083/A EZ1082 EZ1900 (Dual) EZ1580 EZ1585D 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 15.4 11.9 16.5 12.75 22.0 15.4 11.9 15.4 11.9 15.4 11.9 13.2 10.2 17.6 13.6 TO-220/ TO-263 Q1'97 Q1'97 TO-220 5-pin TO-220 8-pin SOIC TO-220 TO-247 TO-220 TO-247 TO-220
Vendor
National
Raytheon
Semtech
EZ1584A
Unisem
US1080
2.8V/3.3V/VRE Switching Regulator Solutions Electrical Vendor Cherry Part Number CS5120 HIP5010 VOUT 3.3/VRE 3.3/VRE IOUT (Max) Solution Efficency (typical) Number
MOSFETs
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Availability
Package 14-pin PDIP 14-pin SOIC 16-pin SOIC 7-pin TO-220 7-pin
Sample Product
HIP5011 Harris
3.3/VR
16-pin SOIC 7-pin TO-220 7-pin
HIP5010
3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VR
7-pin TO-220 7-pin
HIP5016
7-pin TO-220 7-pin
LTC1266
16-pin SOIC
Linear Tech
LTC1430
16-pin SOIC 8-pin SOIC
LTC1435
16-pin SOIC
Linfinity
LX1660/1
SO-16
Q4'96
Q4'96
MAX797 Maxim MAX798
16-pin SOIC
16-pin SOIC
AP-579
2.8V/3.3V/VRE Switching Regulator Solutions (Cond) Electrical Part Number LM3578 LM3411 RC5036 (Dual) VOUT 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE 3.3/VRE IOUT (Max) Solution Efficency (typical) 90.5% 16-pin SOIC 16-pin TSSOP 16-pin SOIC 16-pin 16-pin SOIC 16-pin 20-pin SOIC 20-pin 18-pin SOIC 18-pin 7-pin TO-220 TO-263 Q1'97 Q1`97 16-pin SOIC 16-pin SOIC 14-pin SOIC Number
MOSFETs
Availability
Vendor National
Package SO-8 5-pin SOT23 16-pin SOIC
Sample Product
Raytheon
RC5031
RC5035 (Dual)
Si9140 Siliconix Si9145
UC3886
UCC3881 Unitrode UCC3880
UC3874
Unisem
US2050
APPENDIX
D1.0. REGULATOR VENDOR SOLUTIONS CONTACT LIST
On-board Regulators Vendor
Cherry
AP-579
North America
Europe
Asia
Dennis Gatano Tel: (401) 886-3305 Fax: (401) 885-5786
Japan
Harris
Dean Henderson Tel: (919) 405-3603 Fax: (919) 405-3651 Scott Tel: (408) 432-1900 Fax: (408) 434-0507
Robert Lahaye Tel: (33) 54046 Fax: (33) 394-64054 Fred Killinger Tel: (49) 9642550 Fax: (49) 963147
Jason Tel: (886) 9310 Fax: (886) 3029 Dave Quarrels Tel: (65) 2692 Fax: (65) 4112
Masaru Agano Tel: (81) 3265 7571 Fax: (81) 3265 7575
Linear Tech Linfinity
Andrew Stewart Tel: (714) 898-8121 Fax: (714) 893-2570 David Timm Tel: (408) 737-7600 Fax: (408) 737-7194 Venkatesh Shan Tel: (408) 721-3753 Fax: (408) 721-8763 David McIntyre Tel: (415) 9667734 Fax: (415) 966-7742 Gene Krzwinski Tel: (805) 498-2111 Fax: (805) 498-3804 Erik Ogren Tel: 408-970-5543 Fax: 408-567-8910 John O'Connor Tel: (603) 429-8504 Fax: (603) 429-8963 David Watson Tel: (44) 3430 3388 Fax: (44) 3430 5511 Werner Obermaier Tel: (49) 4135 1331 Fax: (49) 4135 1220 David Frye Tel: (44) 0566 5555 Fax: (44) 0566 3355 Julian Foster Tel: (44) 592-773520 Fax: (44) 592-774781 Sean Montgomery Tel: (44) 485757 Fax: (44) 427371 David Wells Tel: (44) 1431 Fax: (44) 2549 Reza Amirani Tel: (714) 453-1008 Fax: (714) 453-8748 Steve Huang Tel: (886) 2558 6801 Fax: (886) 2555 6348 Vincent Tel: (852) 2737 1616 Fax: (852) 2736 9931 Tadi Kodairo Tel: (81) 3232 6141 Fax: (81) 3232 6149 Mark Kachmerak Tel: (81) 2373
Maxim
National
Raytheon
Mike Wisnia Tel: (81) 3406 5998 Fax: (81) 3406 5998 Kenny Tel: (886) 3389 Fax: (886) 0282 Serge Jaunay Tel: (852) 2378 9715 Fax: (852) 2375 5733 Tony Grizelj Tel: (81) 5562 3321 Fax: (81) 5562 3316
Semtech
Siliconix
Unitrode
Wilkie Wong Tel: 8522-722-1101 Fax: 8522-369-7596
Unisem
AP-579
Voltage Regulator Modules North America Europe
Leonard Tel: (886) 35-7849575 Fax: (886) 35-782924 Larry Freeland Tel: (717) 780-6045 Fax: (717) 780-7027 Tel: (44) 1753-67-6800 Fax: (44) 1753-67-6801 Dave Holmes Tel: (407) 881-2321 Fax: (407) 881-2342 John Beckley Tel: (408) 559-1777 Fax: (408) 559-4294 Gene Krzywinski Tel: (805) 498-2111 Fax: (805) 498-3804 David McIntyre Tel: (415) 966-7734 Fax: (415) 966-7742 Julian Foster Tel: (44) 592-773520 Fax: (44) 592-774781 David Frye Tel: 0566 5555 Fax: 0566 3355 Joseph Chang Tel: (503) 652-7300 Fax: (503) 786-5011 Kenny Tel: (886) 3389 Fax: (886) 0282 Mike Wisnia Tel: 3406 5998 Fax: 3406 5998 Navin Tel: (81) 44-813-8507 Fax: (81) 44-813-8500
Vendor
Ambit
APAC
Japan
C-MAC
Corsair
Semtech
Raytheon
Socket Vendor
North America
Branden Tel: (910) 855-2247 Fax: (910) 855-2224
Europe
Tel: (44) 753-67-6892 Fax: (44) 753-67-6808
APAC
Japan
Itoh Tel: (81) 44-844-8086 Fax: (81) 44-812-3203
Appros Augat David Barnum Tel: (508) 699-9890 Fax: (508) 695-8111
Hiroshi Narita Tel: (81) 45-941-4080 Arif Shahab Tel: (44) 952-670-281 Fax: (44) 952-670-342 Atsushi Sasaki Tel: (81) 44-853-5400 Fax: (81) 44-853-1113 Wesley Ivan Liaw Tel: (886) 2-268-3466 Fax: (886) 2-268-3225 Alan Tel: (886) 02-546-0507 Fax: (886) 02-546-0509 Shiwaku Tel: (81) 3-3778-6161 Fax: (81) 3-3778-6181
Foxconn
Julia Jang Tel: (408) 749-1228 Fax: (408) 749-1266 Sheperd Tel: (408) 456-0797 Fax: (408) 456-0779 Matsuda Tel: (49) 89-451021-43 Fax: (49) 89-451021-10
Yamaichi
Berg/ McKenie
Fred Baldwin Tel: (510) 651-2700 Fax: (510) 651-1020
Header Vendor
AP-579
North America
Larry Freeland Tel: (717) 780-6045 Fax: (717) 780-7027
Europe
Tel: (44) 753-67-6892 Fax: (44) 753-67-6808
APAC
Japan
Itoh Tel: (81) 44-844-8086 Fax: (81) 44-812-3203 Wesley Ivan Liaw Tel: (886) 2-268-3466 Fax: (886) 2-268-3225
Foxconn
Julia Jang Paul Fitting Tel: (408) 749-1228 Fax: (408) 749-1266
Decoupling Capacitors Vendor
Part
1206YZ105KAT1A
Type
1µF,
North America
Dennis Lienemann Tel: (803) 946-0616 Fax: (803) 946-6678
APAC
Steve Chan (Singapore) Tel: (65) 258-2833 Fax: (65) 258-8221 K.J. (Korea) Tel: (82) 2-785-6504 Fax: (82) 2-784-5411 Bill (Taiwan) Nanco Electronics Tel: (886) 2-758-4650 Fax: (886) 2-729-4209 Sales Dept (Hong Kong) Tel: (852) 765-3029 Fax: (852) 330-2560 Warren Marshall Tel: (800) 421-7258 Fax: (714) 713-0129 Taiwan Tel: (886) 2-562-4218 Fax: (886) 2-536-6721 Hong Kong Tel: (852) 782-2618 Fax: (852) 782-1545 Korea Tel: (82) 2-730-7605 Fax: (82) 2-739-5483
TPSD107K010R0100
100µF, Tantalum
Johanson Dielectrics
160R18W105K4
1µF,
Dave Lopez Tel: (818) 364-9800 Fax: (818) 364-6100 NCTR (California only) Tel: (510) 624-8900 Fax: (510) 624-8905
KEMET Electronics Murata Electronics
T495X107K010AS
100µF, Tantalum
Richey-Cypress Elect. Tel: (408) 654-9100 Fax: (408) 566-0160 Sales Department Tel: (770) 436-1300 Fax: (770) 436-3030
GRM40X7R105J016
1µF,
CC1206HX7R105K
X7R/X7S
Sales Department Tel: (847) 803-6100 Fax: (847) 803-6296
Korea Tel: (82) 2-554-6633 Fax: (82) 2-712-6631 Taiwan Tel: (886) 2-712-5090 Fax: (886) 2-712-3090 Hong Kong Tel: (852) 736-2238 Fax: (852) 736-2108
AP-579
Shorting Blocks North America Larry Freeland Tel: (717) 780-6045 Fax: (717) 780-7027 Europe Tel: (44) 753-67-6892 Fax: (44) 753-67-6808 APAC Japan Itoh Tel: (81) 44-844-8086 Fax: (81) 44-812-3203 Wesley Ivan Liaw Tel: (886) 2-268-3466 Fax: (886) 2-268-3225 (Molex) (Molex) Tel: (65) 268-6868 Tel: (81) 427-21-5539 Fax: (65) 265-6044 Fax: (81) 427-21-5562 Julia Jang Paul Fitting Tel: (408) 749-1228 Fax: (408) 749-1266 Micheal Gits Tel: (408) 946-4700 Fax: (408) 946-5386 (Molex) Tel: (49) 89-413092-0 Fax: (49) 89-401527 Resistors Size 1208 0805 Type thin thin Accuracy/ Value 0.1%, 100-250K 0.5%, 10-250K 0.1%, 100-100K 0.5%, 10-1M 0.1%, 100-33K 0.5%, 10-330K 0.5%, 10-100K Contact (507) 625-8445 Region Sales Mgrs Patrick Lyons Mississippi (except Cal) Mark Porisch Southern Mississippi (inc. Goertzen Northern U.S., Mississippi Canada Mike Smith (310) 768-8923 Southern California
Vendor
Foxconn
Molex
Vendor Thin Film Technology
0803
thin
0402
thin
Dale Electronics
0603
thin thick
0.5%, 10-100 1%,2%, 10-1 0.1%, 100-100 0.1%, 100-100 0.5-5%, 10-1 0.1%, 10K-100 1-5%, 10-1MW 1-5%, 10-1MW
Gary Bruns (402) 371-0080
Spear
thin thin thick
Yogi (814) 362-5536
Beckman Industrial
0805
thin thick
Cathy Whittaker (214) 392-7616
0603
thick
3.3V Clock Driver Suppliers Supplier National Semiconductor Cypress Semiconductor Texas Instruments AMCC Motorola Triquint Semiconductor Contact Raju Shah Angel Atondo John Bergen John Wunner David Hoover Mark Hermsen Mark Denzin Geraldine Stih George Sanders Elie Ayache Phone 408-925-9493 408-922-0202 1131 408-721-2990 206-821-9202 903-868-5694 408-492-8366 619-535-6526 602-952-3046 503-644-3535 408-263-6300
AP-579
408-925-9460 408-922-0833 408-732-6017 206-820-8959 903-868-5962 408-492-8362 619-450-9885 602-952-3682 503-644-3198 408-263-6571
AP-579
APPENDIX E1.0. LIST RELATED TOOLS COLLATERAL E1.1. Public Documentation
Document Title Pentium® Processor Family Developer's Manual Volume Set) Volume Pentium Processors (Databook) Volume 82496/82497/82498 Cache Controller 82491/82492/82493 Cache SRAM (Databook) Volume Architecture Programming Manua Pentium® Processor Datasheet MHz, MHz, MHz, MHz, MHz, MHz, MHz) Pentium® Processor Specification Update Pentium® Processor Family Product Briefs Order Number 241563 241428 241429 241430 241997 242480 241561 241557 241610 241574 241575 241618 243103 242687 242415
AP-579
These documents ordered from Intel Literature Center calling 800-548-4725 U.S. other geographies please contact your local sales office.
Pentium® Processor Performance Brief Pentium® Processor Technical Overview AP-479: Pentium® Processor Clock Design
AP-480: Pentium® Processor Thermal Design Guidelines AP-485: Intel Processor Identification with CPUID Instruction AP-577: Introduction PPGA Packaging AP-522: Implementation Guidelines 3.3V Pentium Processors with Specifications AP-578: Software Hardware Considerations Handling Exceptions Pentium® Processor 3.3V Clock Driver Specifications Pentium® Processor 3.3V ASIC Interface Specification Pentium® Processor 3.3V Pipeline BSRAM Specification
Contact your local Intel Sales Office Distributor Contact your local Intel Sales Office Distributor Contact your local Intel Sales Office Distributor
AP-579
Collateral Available Under Non-Disclosure Agreement
Product Information Document Title Notes ID/PDDC Document Number FMKIHU EW3Q1T CW1QGR SC-1294 SC-1263 System Design Documentation Document Title Notes ID/PDDC Document Number RG4Y1L MCLOOO FM-0632 PC89O9 MCQ3OW FBKP54 KW1TFD
E1.2.
These documents obtained contacting your local Intel sales office distributor.
Pentium® Processor Specification Update P54CS-cC0 Stepping Information, Rev. P55C BIOS Compatibility P55C External Design Specification (EDS), Rev. P55C Platform Architecture Analysis, Rev.
Pentium® Processor Flexible Motherboard (FMB) Design Guidelines, P55C/FMB Design Review Checklist, Socket Specification, Rev. Socket Design Review Checklist, Rev. Pentium® Rev. P55C Voltage Regulator Module Overview Target Spec.,
Voltage Guidelines Pentium Processors with MMXTechnology
Processor Input Strapping Recommendations,
System Design Tools Split-plane Platform Test Contact your local Intel Sales Office Distributor
E2.0. REFERENCES
Clyde Coombs, Jr., Printed Circuits Handbook, McGraw Hill Publishing Co., York, 1988
UNITED STATES, Intel Corporation 2200 Mission College Blvd., P.O. 58119, Santa Clara, 95052-8119 Tel: 765-8080 JAPAN, Intel Japan K.K. Tokodai, Tsukuba-shi, Ibaraki-ken 300-26 Tel: 81-29847-8522 FRANCE, Intel Corporation S.A.R.L. Quai Grenelle, 75015 Paris Tel: 1-45717171 UNITED KINGDOM, Intel Corporation (U.K.) Ltd. Pipers Way, Swindon, Wiltshire, England Tel: 1-793-641440 GERMANY, Intel GmbH Dornacher Strasse 85622 Feldkirchen/ Muenchen Tel: 89/99143-0 HONG KONG, Intel Semiconductor Ltd. 32/F Pacific Place, Queensway, Central Tel: +852 2844-4555 CANADA, Intel Semiconductor Canada, Ltd. Attwell Drive, Suite Rexdale, Ontario Tel: +416 675-2438

AP-579 APPLICATION Order Number: 243187-002 Information this

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