Aurora 8b/10b data incorrect issue.

[avinashc]

Hello,

I am trying to send data with GTP transceivers. My S_AXI_TX_TDATA and M_AXI_TX_TDATA data are different in test bench (attached pic).
even I am not sure about TXP and TXN data is valid or not.
I want to know how M_AXI_RX_TDATA gets derived from S_AXI_TX_TDATA.

Thank You!

 

[vGoodtimes]

my guess is that there is some fifo somewhere and the rx data is being buffered by more than 10 samples.

 

[avinashc]

my guess is that there is some fifo somewhere and the rx data is being buffered by more than 10 samples.

Hello,

Actually there was latency in data. Data is coming right, But M_AXI_RX_TVALID is asserting for 2 user clk cycles in some cases. so when receiving the data I am getting same data twice.
What can be the reason behind this?

 

[vGoodtimes]

rx_tready is low for a cycle?

 

[avinashc]

rx_tready is low for a cycle?

I had to introduce FIFO's in between rx and tx side to GTP to avoid data loss, because of variable frequency.
Now its working fine.