DS91C176EVK User Manual
User Instructions
This section provides adapter board user instructions:
1. It is always recommended to terminate unused twisted pairs of a twisted pair cable to
minimize EMI, crosstalk, etc., thus termination resistors R6, R7 and R8. Remove
resistors connected to the RJ45 pins that you plan to use. For example, remove R7 if
you plan to use RJ45 pins 1 and 2 (they are connected to SMA1 and SMA2 connectors
respectively).
2. If you want to use RJ45 pins 3 and 6 (they are connected to SMA3 and SMA6 connector
pads respectively), disconnect the DS91C176 (U1) M-LVDS pins by removing R2 and R3
0-ohm resistors and placing them on the R4 and R5 resistor pads.
3. If you want to use the DS91C176 (U1), apply 3.3 V between the VDD (J2) and GND (J1)
power connectors, configure the device as an M-LVDS driver or receiver using the JP3
and use the JP2 to access the DS91C176 LVCMOS I/O pins. For more info on the
DS91C176 check its respective datasheet at lvds.national.com.
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