National Semiconductor DS25CP104, User Manual

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DS25CP104EVK User Manual
DS25CP104 Evaluation
The DS25CP104 is a 3.125 Gbps LVDS Crosspoint Switch with four levels of transmit
pre-emphasis and two levels of receive equalization configured in the SMBus Mode and
two levels of transmit pre-emphasis and two levels of receive equalization configured via
external jumpers on the evaluation board in the Pin Mode.
Initial Pin Settings for Pin Mode Testing
Pin Setting Note
SMBus Enable L Disable SMbus
EQ0 – EQ 3 L Equalization off,
See table
PE0 – PE3 L Pre-Emphasis off,
See table
PWDN H Power Down off
Switch Configuration Truth Tables
S01 S00 Input Selected
0 0 IN0
0 1 IN1
1 0 IN2
1 1 IN3
Table 1. Input Select Pins Configuration for the Output OUT0
S11 S10 Input Selected
0 0 IN0
0 1 IN1
1 0 IN2
1 1 IN3
Table 2. Input Select Pins Configuration for the Output OUT1
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