Revision Guide Publication 23614 Rev: Issue Date: December 2000

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Revision Guide Publication 23614 Rev: Issue Date: December 2000

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AthlonProcessor Model
Revision Guide
Publication 23614 Rev: Issue Date: December 2000
2000 Advanced Micro Devices, Inc. rights reserved. contents this document provided connection with Advanced Micro Devices, Inc. ("AMD") products. makes representations warranties with respect accuracy completeness contents this publication reserves right make changes specifications product descriptions time without notice. license, whether express, implied, arising estoppel otherwise, intellectual property rights granted this publication. Except forth AMD's Standard Terms Conditions Sale, assumes liability whatsoever, disclaims express implied warranty, relating products including, limited implied warranty merchantability, fitness particular purpose, infringement intellectual property right. products described herein contain design defects errors ("Product Errata") that causes products deviate from published specifications. Currently characterized Product Errata available upon request. AMD's products designed, intended, authorized warranted components systems intended surgical implant into body, other applications intended support sustain life, other application which failure AMD's product could create situation where personal injury, death, severe property environmental damage occur. reserves right discontinue make changes products time without notice.
Trademarks AMD, logo, Athlon, Duron, combinations thereof, AMD-751, AMD-756 trademarks Advanced Micro Devices, Inc. Other product names used this publication identification purposes only trademarks their respective companies.
23614E-December 2000
AthlonProcessor Model Revision Guide
AthlonProcessor Model Revision Guide
purpose AthlonProcessor Model Revision Guide communicate updated product information Athlon Processor Model (code named "Thunderbird") designers computer systems software developers. This guide consists four sections:
Product Marking Identification: This section, which starts page provides product types, product revisions, OPNs (Ordering Part Numbers), product marking information. Product Errata: This section, which starts page provides detailed description product errata, including potential effects system operation suggested workarounds. erratum defined deviation from product's specification. product errata cause behavior Athlon Processor Model deviate from published specifications. Revision Determination: This section, which starts page shows Athlon Processor Model identification numbers returned CPUID instruction each revision processor. Technical Documentation Support: This section, which starts page provides listing available technical support resources. also lists corrections, modifications, clarifications listed documents.
Revision Guide Policy
occasionally identifies deviations from changes specification Athlon Processor Model These changes documented Athlon Processor Model Revision Guide errata. Descriptions written assist system software designers using Athlon Processor Model corrections AMD's documentation Athlon Processor Model included. This release documents currently characterized product errata, intended identify errata processor.
Preliminary Information AthlonProcessor Model Revision Guide
23614E-December 2000
Product Marking Identification
Production Marking
following figures tables describe product marking (Socket card module (Slot versions Athlon Processor Model
0850
FSB: MHz, C=266 Size Cache: 2=128Kbytes, =256Kbytes Case Temperature: 70°C, Operating Voltage: 1.5V, 1.6V, 1.7V, 1.75V, 1.8V Package Type: Card Module, Speed: 0850=850 MHz, 0900=900 MHz, 1000=1000 MHz, 1100=1100 MHz, 1200=1200 MHz, 1133= 1133 MHz, etc. Family/Architecture: AthlonProcessor Model Architecture
Note: Spaces added number shown above viewing clarity only.
Figure Example AthlonProcessor Model Table Examples Ordering Part Number Combinations
A0650APT3B A0700APT3B A0750APT3B A0800APT3B A0850APT3B A0900AMT3B A0950AMT3B A1000AMT3B
Notes:
Package Type
Operating Voltage 1.75 1.75 1.75
Temperature 0°C-90°C 0°C-90°C 0°C-90°C 0°C-90°C 0°C-90°C 0°C-90°C 0°C-90°C 0°C-90°C
This table lists configurations planned supported volume this device. Consult local sales office confirm availability specific valid combinations check newly-released combinations.
23614E-December 2000
AthlonProcessor Model Revision Guide
Product Naming
(Pad Printed)
Dynamic Marking Product
(Laser Marking)
AthlonProcessor
Copyright Info
AMD-A0850MPR24B
219927999994
Serial
(Laser Marking)
2000 (Pad Printed)
Code (44x44)
(Laser Marking)
AMD-A 0850
Reserved Characters blank spaces positioned before this character.) FSB: Cache Divisor: Size Cache: 256Kbytes Case Temperature: 70°C Operating Voltage: 1.6V, 1.7V, 1.75V, 1.8V Package Type: Card Module, Speed: 0850=850 MHz, 0900=900 MHz, 1000=1000 MHz, 1100=1100 MHz, etc. Family/Architecture: Athlon Processor Model Architecture
Note: Spaces added number illustrated above viewing clarity only.
Figure Example AthlonProcessor Model Card Module Table Examples Part Number Combinations AthlonProcessor Model Card Modules
AMD-A0650MPR24B AMD-A0700MPR24B AMD-A0750MPR24B AMD-A0800MPR24B AMD-A0850MPR24B AMD-A0900MMR24B AMD-A0950MMR24B AMD-A1000MMR24B Package Type Card Module Card Module Card Module Card Module Card Module Card Module Card Module Card Module Operating Voltage 1.75 1.75 1.75 Plate Temperature 0°C-70°C 0°C-70°C 0°C-70°C 0°C-70°C 0°C-70°C 0°C-70°C 0°C-70°C 0°C-70°C
Preliminary Information AthlonProcessor Model Revision Guide
23614E-December 2000
Table
Examples Part Number Combinations AthlonProcessor Model Card Modules
Package Type Operating Voltage Plate Temperature
Note:This table lists configurations planned supported volume this device. Consult local sales office confirm availability specific valid combinations check newly-released combinations
23614E-December 2000
AthlonProcessor Model Revision Guide
Product Errata
This section documents AthlonProcessor Model product errata. errata divided into categories assist referencing particular errata. unique tracking number each erratum been assigned within this document user convenience tracking errata within specific revision levels. Table cross-references revisions processor each erratum. indicates that erratum applies stepping. absence indicates that erratum does apply stepping. Shading within table indicates addition modification from previous release this document. Note: There missing errata numbers. Errata that have been resolved from early revisions processor have been deleted, errata that have been reconsidered have been deleted renumbered.
Table
Cross-Reference Product Revision Errata
Errata Numbers Description Revision Number
Unit Control Register 408h Returns Incorrect Information Resistance Value Pins Overshoot Wake-Up from Disconnect Causes Auto-Compensation Circuit Fail
Preliminary Information AthlonProcessor Model Revision Guide
23614E-December 2000
Unit Control Register 408h Returns Incorrect Information
Products Affected. Normal Specified Operation. System reads 408h, Unit Control Register MC2_CTL, should return correct information-the lower bits zeros upper bits EDX. Non-conformance. read Machine Check Architecture (MCA) Unit Control 408h (MC2_CTL) returns incorrect information EDX. returns information stored upper bits Status 409h (MC2_STATUS) instead. Potential Effect System. system reads this control register, upper bits, which reported EDX, contain unexpected data. Suggested Workaround. This register only implemented 32-bit register. Ignore upper bits which reported EDX. Resolution Status. planned.
23614E-December 2000
AthlonProcessor Model Revision Guide
Resistance Value Pins
Products Affected. Normal Specified Operation. pins specified such that Athlon system output drivers autocompensate whatever resistance value applied between VSS. Non-conformance. Athlon system driver impedance approximately ohms higher than applied resistor value. Potential Effect System. Athlon system signal quality signals driven northbridge adversely affected. Suggested Workaround. motherboards should have ZN/ZP resistors approximately ohms less than characteristic board impedance. Resolution Status. Fixed revision Note: When future revisions processor used with motherboards implementing workaround, expected output impedance driver will continue yield good signal quality. (For example, with motherboard setting ohms part that drives with 60-ohm driver works properly. revised part with true 40-ohm driver also works properly.)
Preliminary Information AthlonProcessor Model Revision Guide
23614E-December 2000
Overshoot Wake-Up from Disconnect Causes Auto-Compensation Circuit Fail
Products Affected. Normal Specified Operation. Athlon Processor Model should return normal operating frequency when reconnecting system after disconnect where reduced lower operating frequency. Non-conformance. Athlon Processor Model exceed normal operating frequency when reconnecting system after disconnect, causing failure maintain sufficient system drive strength levels driver compensation circuit. compensation circuit attempts correct drive strength, there sufficient time perform this function, system cannot operate properly. Potential Effect System. system hangs. Suggested Workaround. event avoided through BIOS manipulation reconnect timing using CLK_CTRL MSR. (See document number 24478, "AMD Athlonand DuronProcessor CLK_CTRL Settings" exact values.) time overshoot greatly shortened reduce very small time period that does enable failure, time between rampup reconnect system increased such that failure compensation circuit enough time recover before reconnecting bus. Resolution Status. Fixed future revisions.
23614E-December 2000
AthlonProcessor Model Revision Guide
Revision Determination
Table shows Athlon Processor Model identification numbers returned CPUID instruction each revision processor.
Table
CPUID Values Revisions AthlonProcessor Model
Revision
CPUID
Preliminary Information AthlonProcessor Model Revision Guide
23614E-December 2000
Technical Documentation Support
Documentation Support
following documents provide additional information regarding operation Athlon Processor Model
AthlonProcessor Model Data Sheet, order number 23792 AMD-751System Controller Data Sheet, order number 21910 AMD-756Peripheral Controller Data Sheet, order number 22548 Athlon Processor Code Optimization Guide, order number 22007
latest updates, refer www.amd.com download appropriate files.

Revision Guide Publication 23614 Rev: Issue Date: December 2000

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