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Q: How are differential pairs handled in Xilinx Devices?
Answer:
When you specify a pin as a differential on Xilinx Devices, the scan cells on the N side get disconnected from the I/O and all differential traffic is monitored from the P side scan cells. The N-Side scan cells are still present, and you can still see the N side scan cells (and put values in them), but they don't perform anything.
All this applies to post configuration. With Pre-configuration you have a total control over all scan cells.
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SECONS Ltd. is not in any way connected with integrated circuit manufacturers and there is no any type of authorization, association or affiliation between SECONS and integrated circuit manufacturers. All information present in this FAQ is provided for informational purposes only, on "as-is" basis, and is intended to be useful and informative for SECONS customers.