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I have gone through transceiver banks of Arria 10. There are always two reference clocks ( 4 pins) like REFCLK_GXBLxC_CHTP/N vs REFCLK_GXBLxC_CHBP/N.
I still do not understand the difference between them. One for RX and one for TX, is it correct? Or I can use which ever I want or any usage constraint.
Many thanks in advance!
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Hi,
As I understand it, you have some inquiries related to the two refclks available in a XCVR bank in A10 devices. For your information, you can use either of the refclks to drive your XCVR. The availability of two refclks provide the flexibility for dynamic rate change which would require two different refclk frequencies and also allow different XCVR data rate to be supported within the same XCVR bank.
Please let me know if there is any concern. Thank you.
Best regards,
Chee Pin

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