Hi Nasser,

Thanks for the reply. By the way, do we have such a table for DS80PCI102 so we can configure it more easily. Thanks.

Best regards,

Wayne

Hi Nasser,

Thanks for your reply. Just a follow up question.

My customer wants to use DS80PCI102 for PCIE Gen2. So for the PCIE rate pin13, should we tie 1k to GND or leave it float? Thanks.

Best regards,

Wayne

Hi Nasser,

Thanks. But sorry to bother I have one more question about the AC coulpling caps.

For PCIE GEN3, we recommend to use 0.22uF cap, But customer is using PCIE GEN2, so can they use 0.1uF cap?

What's more, the device is between BMC board and FPGA board. FPGA vendor requires to use 0.22uF and BMC vendor requires to use 0.1uF. So how should we design the 4 caps in below picture?Thanks.

Best regards,

Wayne

Hi Nasser,

Echo to your reply. Could you please check it again? Many thanks for your help

1). PCIe recommendation requires at least or at minimum 75nF Cap so .1uF or 100nF is fine.

Wayne: Is this 75nF minimum for PCIe Gen2?

2). On TX of our redriver - RX of the FPGA where you have ? sign - we can use 220nF Cap.

Wayne: How about the cap on OUTB of our redriver - RX of the BMC? which is the upper right cap marked with'?'. Thanks

Best regards,

Wayne