Part Number: DriveCable02EVK NOPB latest documents concerning these pr

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1500 Mbps Cable Extender Chipset (DS15BA101/DS15EA101) Evaluation
Part Number: DriveCable02EVK NOPB latest documents concerning these products evaluation kit, visit lvds.national.com. Schematics gerber files also available lvds.national.com.
January 2008 Rev.
DriveCable02EVK User Manual
Table Contents
Overview Board Description. Setting DriveCable02EVK Evaluation Evaluation with 100-ohm Differential Balanced Cables Evaluation with 50-ohm Coaxial Cables
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DriveCable02EVK User Manual
Overview
DriveCable02EVK evaluation designed demonstrating performance DS15BA101 DS15EA101, cable extender chipset. enables evaluation chipset with 100-ohm differential cables such twin-axial cost CAT5e/6/7 twisted pair cables 50-ohm coaxial cables. purpose this document familiarize with DriveCable02EVK, suggest test setup procedures instrumentation, guide through some typical measurements that demonstrate performance chipset typical applications.
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DriveCable02EVK User Manual
Board Description
Figure shows drawing board. inch inch 6-layer with two-device layout that capable demonstrating performance features DS15BA101 DS15EA101.
Vbias
Figure DriveCable02EVK Board Connector Device Function Select output amplitude Output enable input common mode voltage (Optional)
Table DriveCable02EVK Connector-Device-Function Cross Reference
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DriveCable02EVK User Manual
Setting DriveCable02EVK Evaluation
This section provides quick reference setting some typical test configurations using DriveCable02EVK that will enable evaluate solution with 100-ohm differential cables (twinaxial twisted pair cables) well 50-ohm coaxial cables.
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DriveCable02EVK User Manual
Evaluation with 100-ohm Differential Balanced Cables
DriveCable02EVK used evaluate chipset with 100-ohm differential cables (twin-axial twisted pair cables). Examples CAT5e/6/7 cable assemblies such Belden 1500A, Belden 1700A, Siemon CAT7 Tera, Belden 89207 Amphenol SKEWCLEAR series cables. Figure simplified block diagram configuration.
Advantest D3186 Pattern Generator
Connector Adapter
Cable Extender Chipset Evaluation Board P/N: DriveCable02EVK, Rev. Gigabits@ManyMeters
Cable
Tektronix 6154C Oscilloscope
Figure Test Setup 100-ohm Differential Cable Evaluation
Note: Connector Adapters included this kit. Currently, RJ45-SMA adapters available ordered separately. part number DS91C176EVK NOPB. cable assemblies have other than RJ-45 connectors, recommended obtain/develop adapter board similar RJ45-SMA adapter ensure good impedance control signal path. more information about RJ45-SMA Adapter check:
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Connector Adapter
DriveCable02EVK User Manual
Follow these steps DriveCable02EVK evaluation with 100-ohm differential balanced cables: Configure DriveCable02EVK board: Provide between (VDD) (GND). This powers devices board. DS15BA101 (U1) output voltage amplitude using JP1. Enable DS15EA101 (U2) outputs setting low. This accomplished placing jumper across pins connector JP2. Connect DS15BA101 inputs signal source (e.g. Pattern Generator Serializer output). Note AC-coupling capacitors inputs (SMA1 SMA2) Adjust signal parameters (VOH, VOL, VCM) that they comply with DS15BA101 input requirements. DC-coupled interface desired, 0-ohm SM0402 resistors place There provision optional resistor divider network (R12 R13) DS15BA101 inputs case desires biasing input signal externally (note: there already internal biasing network DS15BA101 inputs). addition, connector provides signal biasing provision voltage source. Attach connector adapters available) DS15BA101 outputs (SMA3 SMA4) DS15EA101 inputs (SMA5 SMA6). Connect 100-ohm cable assembly with corresponding plugs ends. LED1 will illuminate DS15EA101 (U2) detects valid signal. Connect DS15EA101 (U2) outputs directly oscilloscope, error rate tester (BERT) receiver deserializer using good quality coaxial cables. Note that equalizer outputs have internal 50-ohm pull-ups that there on-board AC-coupling capacitors. Observe results oscilloscope BERT receiver.
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DriveCable02EVK User Manual
Figure presents typical maximum data rate function CAT5e cable length. data collected four chipsets data taken with jitter criteria while data blue taken with 0.25 jitter criteria.
2.50 2.25 Maximum Data Rate [Gbps] 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 0.00
Cable Length
Figure DS15BA101 DS15EA101 Performance with CAT5e Cable
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DriveCable02EVK User Manual
Figure presents maximum data rate function CAT7 cable length. data collected four chipsets data taken with jitter criteria while data blue taken with 0.25 jitter criteria.
3.00 2.75 Maximum Data Rate [Gbps] 2.50 2.25 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 0.00
Cable Length
Figure DS15BA101 DS15EA101 Performance with CAT7 Cable
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DriveCable02EVK User Manual
Evaluating 50-ohm Coaxial Cables
DriveCable02EVK used evaluate 50-ohm coaxial cables. Examples 50-ohm coaxial cables Belden 9914 Andrew FSJ-50B. Figure simplified block diagram configuration.
Advantest D3186 Pattern Generator
Cable Extender Chipset Evaluation Board P/N: DriveCable02EVK, Rev. Gigabits@ManyMeters
Cable
Tektronix 6154C Oscilloscope
Figure Test Setup 50-ohm Coaxial Cable Evaluation
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DriveCable02EVK User Manual
Follow these steps DriveCable02EVK evaluation with 50-ohm coaxial cables: Configure DriveCable02EVK board: Provide between (VDD) (GND). This powers devices board. DS15BA101 (U1) output voltage amplitude using JP1. Enable DS15EA101 (U2) outputs setting low. This accomplished placing jumper across pins connector JP2. Remove place 50-ohm termination DS15EA101 input that will used R10) 25-ohm termination DS15EA101 input that will used R10). Connect cable driver inputs signal source (e.g. Pattern Generator). Note AC-coupling capacitors inputs (SMA1 SMA2) Adjust signal parameters (VOH, VOL, VCM) that they comply with DS15BA101 input requirements. DC-coupled interface desired, 0-ohm SM0402 resistors place There provision optional resistor divider network (R12 R13) DS15BA101 inputs case desires bias signal externally (there internal biasing network DS15BA101 inputs). addition, connector provides signal biasing provision voltage source.
SMA-to-BNC Adapters (i.e. PE9074 from www.pasternack.com) necessary case coaxial cable connectors). Connect coaxial cable assembly with coresponding connectors ends. LED1 will illuminate DS15EA101 (U2) detects valid signal. Connect equalizer outputs directly oscilloscope error rate tester (BERT) receiver using good quality coaxial cables. Note that equalizer outputs have internal 50-ohm pull-ups that there on-board AC-coupling capacitors. Observe results oscilloscope BERT receiver.
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DriveCable02EVK User Manual
Figure presents maximum data rate function Belden 9914 cable length. data collected chipsets data taken with jitter criteria while data blue taken with 0.25 jitter criteria.
3.00 2.75 Maximum Data Rate [Gbps] 2.50 2.25 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 0.00
Cable Length
Figure DS15BA101 DS15EA101 Performance with Belden 9914 Cable
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Company: Phone: Fax: E:\.\06_P-06379R0_370HR_b.zlf 11/27/2007 2:46:04 [CUSTOMER COPY] soldermask: 4000 Taiyo
mils
.5oz 1.90 10.08 .5oz .5oz 0.65 2.50 0.65 28.81
Date: From: Phone: Fax:
11/27/2007 Page Gordon Galbraith (503) 992-4448
Thickness Material Type
(um)
(48) FOIL (256) 2116 1652 Polyclad
(17) (64) Lam, 370HR .0025 1080 .5/.5 DSTF 24x18 (17) (732) 7628 7628 7628 7628 Polyclad
.5oz .5oz
0.65 2.50 0.65 10.08
(17) (64) Lam, 370HR .0025 1080 .5/.5 DSTF 24x18 (17) (256) 1652 (48) FOIL 2116 Polyclad
.5oz
1.90
Overall Board Thicknesses (Over Conductor) inches (mm) nom: 0.0604 (1.53) Customer Notes: National Semiconductor Total thickness .060" .006" Note pitch equal center center spacing, edge edge. Pitch edge edge spacing plus trace width. -Impedance Notes 11/26/2007 10:41 -Layer (ref 18.00 lines ohms +/-10% (model 49.69) 8.50 lines/14 pitch differential +/-10% (model 98.9)

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