12-15-2019 05:40 PM - edited 12-15-2019 05:41 PM
My understanding is , what @iguo was suggested is a setting to make your RX CDR lock to reference clock.
As you may already aware that UltraScale GTH/GTY can only support minimum of 500Mbps.
To receive 100MHz (100Mbps) signal manually with UltraScale GTH/GTY, you need to implement oversampling the input signal by user logic.
As an alternative, If you want to receive 100BASE Ethernet
I would suggest to check PG047 below. Please check if this IP can fit your system. (External PHY is required though )
Thanks & regards
01-02-2020 04:02 PM