Tool/software:
Hi,
I am making a TDA4AH custom board that will be talking to another board.
This PCIe link will be on the Jacinto's SerDes1 module. I do not know at this time whether or not I will be receiving a 100 MHZ PCIe reference clock from the other board, so I was hoping that I can just input my own reference 100 MHZ clock to the SerDes module, and let the other board use its own reference clock.
I believe the PCIe standard allows this setup, provided the clocks accuracies are within a few hundred ppm.
The TRM PCIe section 12.2.3.1.1 states "Separate Reference Clock with Independent Spread (SRIS)", but I do not think I will have spread spectrum clocks.
So two questions:
1. I would like to confirm if TDA4AH supports Gen 3 PCIe links with separate reference clocks (i.e no shared clock)?
2. If so, is it okay that the clocks are not Spread Spectrum?
Thanks
