MiniGiantess Center Forum • The center of the Mini Giantess community • Participate and share • Help this Mini Giantess grow!

Hi all, 

I want to use 2 Rocket IO receiver (Virtex II pro) to read 2 serial data. The data is externally synchronized when connected to MGTs.  

Simulation shows giving same clocks and reset, the 2 MGTs start reading from same bit, so the 2 deserialized RXDATAs are identical. However, experimentally they are not and the delay is random each time re-program.

Is this because of jitter/delay on clock/reset?  Or is this natural behavior of MGT deserializer? 

Do I have to use channel bonding to synchronize the two MGTs even if the income data is well synchronized externally?  

Please help.

Thanks!

I didn't find the right solution from the Internet.

References:  https://forums.xilinx.com/t5/Virtex-Family-FPGAs/Why-MGTs-do-not-read-synchronously/td-p/14755

Sales Marketing Examples