Part Number: SN75LVPE802
Hi team,
My customer has the following problems, which are described in Chinese. I am not familiar with eye diagram test. I translate the questions from Chinese to English. If there are descriptions that confuse you, please point out.
1、U.2-1 without redriver : eye diagram test PCIE GEN3 RMS jitter fail,lan0-lan3 all fail,3.2~3.6ps, Shorter route, Intel spec less than 3ps
U.2-2 with redriver : eye diagram test PCIE GEN3 RMS jitter fail,lan0-lan3 all fail,3.7~4.2ps, Longer route
2、PCIE GEN3 clock test：About jitter part test pass
3、Use the PCIe X4 and U.2 that passed the test to cross verify the clock and date eye diagram test:
U.2 clock + PCIE X4 date： RMS jitter pass.2 date + PCIE X4 clock： RMS jitter fail
4、Adjust DEW,DE,EQ, eye diagram changes, RMS jitter still fail
Help to see the relationship between RMS jitter fail and date, thank you!
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Best Regards,
Amy Luo