omap5432 uEVM USB3.0 eye diagram fail on CP1 pattern

yi-chia lan

Dear All,

I am use omap5432 uEVM board to test USB3.0 eye diagram , but it always fail on CP1 pattern.

As I know, usb3.0 can switch to test mode by itself, no driver needed, but we got CP1 pattern -> unknow mode -> CP1 pattern -> unknow pattern (repeat) .

Do anyone know the procedure to test omap5432 uEVM USB3.0 eye diagram ????

or ,does TI have usb3.0 document about USB3.0 eye diagram ??

over 9 years ago

0 Boyko Kazakov over 9 years ago

TI__Genius 10965 points

Hi,

What steps did you make to invoke the unknown patterns so far?

Regards,

Boyko

0 yi-chia lan over 9 years ago in reply to Boyko Kazakov

Prodigy 220 points

Hi Boyko,

In fact, we didn't know why unknow pattern shows up when CP1 was in test.
Our USB3.0 lab told us LFPS and CP0 pattern pass, but no idea why CP1 just can not keep in CP1 pattern mode.

Our scop:
Agilent 90000 series scope + Agilent fixture:U7242A

B.Rgds

yi-chia.lan

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omap5432 uEVM USB3.0 eye diagram fail on CP1 pattern