Hi Team,
We meet flicker issue when using 925-926, and see lock lost when flicking. We'd like to check the jitter at 925 PCLK input side.
Here comes some questions:
1. Jitter tolerance:
1) In datasheet, minimum tolerance is 0.4UI, but no max jitter requirement. Is it jitter tolerance (jitter < max jitter tolerance) or eye opening (eye opening > min eye opening)?
2) If PCLK is 30MHz, 0.4UI is 0.4*1/30M = 13.3ns, right? I asked because in datasheet, the note says 1UI = 1 / (35*PCLK)
2. Test method:
In TI CTP document, it's based on DPOJET jitter analysis software, is there any guideline to use Infinite mode to measure jitter? Should we read the jitter of 3rd clock cycle?
Regards,
Cera