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Occasional Contributor

2 years ago

Solved

arria 10 use transciever phy ip

hi,everyone,i have a issue about transciever phy ip,as follows:

the phy ip is 2 recieve channel，but the rx_is_lockedtoref signal of ch1 is unstable, ch0 is ok.

At the same time,i have a phy ip is 1 recieve channel to test the ch0 and ch1, all off them is ok，What is the problem？

ZiYing_Intel
2 years ago
Hi smile123,

When CDR is in locked to data mode, the status of rx_is_lockedtoref is unknown; it can be high or low or toggling. You do not need to care about rx_is_lockedtoref when rx_is_lockedtodata is high.

Regards,
zying

7 Replies

FvM
Super Contributor
2 years ago
Hi,
you agree that you are not giving much info about your design?
As a starter question, does your design meet timing? Do you see any warnings, e.g. related to PLL usage?
- smile123
  Occasional Contributor
  2 years ago
  Hi,it is sorry to reply to you now,my .qar project file is below.
ZiYing_Intel
Frequent Contributor
2 years ago
Hi,

Thanks for submitting the issue. Allow me have some time to look into the issue and I will get back to you with findings.

Best regards,
zying
ZiYing_Intel
Frequent Contributor
2 years ago
Hi smile123,

Can you share your .qar file here? So that I can try debug the issue from my side.

Best regards,
zying
- smile123
  Occasional Contributor
  2 years ago
  Hi,this is the .qar file.
  sfp_test_22_1_0_174.qar8.1 MB
ZiYing_Intel
Frequent Contributor
2 years ago
Hi smile123,

When CDR is in locked to data mode, the status of rx_is_lockedtoref is unknown; it can be high or low or toggling. You do not need to care about rx_is_lockedtoref when rx_is_lockedtodata is high.

Regards,
zying
- smile123
  Occasional Contributor
  2 years ago
  ok，thank you for your reply。