cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
namsh
Visitor
Visitor
535 Views
Registered: ‎12-03-2018

CPRI: Tcoretx and Tcorerx for GTHE3 (UltraScale)

Jump to solution

I am referring to the CPRI v89 document. I can find information about GTYE3 Transceiver in Table 4-14, but I can't find any information about GTHE3 Transceiver.
Can I use the values in this table for Tcoretx and Tcorerx?

0 Kudos
1 Solution

Accepted Solutions
nmoeller
Xilinx Employee
Xilinx Employee
514 Views
Registered: ‎09-05-2018

Hey @namsh,

The values for the GTHE3 transceiver delay are found in Table 4-10 of CPRI v8.9

For other transceiver-based implementations, the calculation is similar but uses the transceiver latencies for the relevant device.

So for the first column of Table 4-14, you would keep the 40UI from the logic delay component, but substitute 95UI listed for 16 bit GTHE3 delay from Table 4-10, for a total delay of 135UI TX delay in the 16bit configuration with a GTHE3 transceiver. 

Nicholas Moellers

Xilinx Worldwide Technical Support

View solution in original post

1 Reply
nmoeller
Xilinx Employee
Xilinx Employee
515 Views
Registered: ‎09-05-2018

Hey @namsh,

The values for the GTHE3 transceiver delay are found in Table 4-10 of CPRI v8.9

For other transceiver-based implementations, the calculation is similar but uses the transceiver latencies for the relevant device.

So for the first column of Table 4-14, you would keep the 40UI from the logic delay component, but substitute 95UI listed for 16 bit GTHE3 delay from Table 4-10, for a total delay of 135UI TX delay in the 16bit configuration with a GTHE3 transceiver. 

Nicholas Moellers

Xilinx Worldwide Technical Support

View solution in original post