Forum Discussion
yashael
Occasional Contributor
Occasional ContributorStratix 10 PAC HSSI example
I'm trying to understand how to use the hssi interface in stratix 10 PAC. I had some problem on rx_data_valid (PCS Direct on serial loopback) But unable to reproduce the issue, so i'm creating a ...
JohnT_Altera
Regular Contributor
Regular ContributorHi,
May I know if you have make sure that your data is check before you locked the data?
From the rtl you provided, you are only locking the data once the counter hit MAX.
assign data_locked = ref_value == MAX;
yashaelIn the rtl I provided, I was not sure what the data_locked is used for, and its function is not clear in the example.
However, in the screenshot I sent you I used the example design (prbs pattern_generator) and not my own pattern generator (counter).
In the rx_pattern_ver waveform, we can see that the data is check before the data locked, (the pause_chk is low and the data_locked is still lo). But, even there the rx_data is not equal to tx_data.
