为什么工具在没有IBERT环回模式的情况下显示NO LINK

你好
我尝试在无环回模式下测量IBERT。不幸的是，工具在此模式下显示NO LINK。另一方面，在近端PCS和近端PMA模式的情况下，LINK正常。
有人知道为什么会出现这个问题吗？还有人能告诉我如何解决这个问题吗？
我在下面显示我的硬件状况。
Rx板：ZC706Tx板：我们的原板。我使用FMC HPC连接器作为收发器接口。参考时钟由我们的原板提供。参考时钟频率为100MHz。收发器数据速率为2.0Gbps。
当我通过使用收发器IP从我们的原始板接收串行数据时，接收的数据是正确的。但是我无法测量IBERT。
谢谢。



以下为原文

Hi


I try to measure IBERT in none loopback mode.
Unfortunately, tool shows NO LINK in this mode.
On the other hands, in case of Near end PCS and Near end PMA mode, LINK is OK.
Does someone knows why this problem occur?
Also could someone tell me how to solve this problem?

I show my hardware condition in following.
Rx board : ZC706
Tx board : our original board.
I use FMC HPC connector for transceiver interface.
Reference clock is provided from our original board.
The frequency of reference clock is 100MHz.
Transceiver data rate is 2.0Gbps.

When I receive serial data from our original board by using transceiver IP, the received data is correct.
However I can not measure IBERT.


Thank you.