Hi guys,
I want to use Cyclone V GX transceivers connected to SFPs. I created my system on Qsys using Custom PHY core with GIGE parameters.
But to connect it to MAC I need GMII interface and I can't find Collision Detect and Carrie Sense signals. I found in Cyclone V Handbook why:
"Note: The transceivers do not have built-in support for other PCS functions, such as the autonegotiation state machine, collision-detect, and carrier-sense functions. If you require these functions, implement them in the FPGA fabric or in external circuits. "
Can anyone give me some tip about how to implement carrie sense function or some documentation about it ?
Thank you
