DS92LV2411: PCLK jitter requirement

Kawai

Guru 19785 points

Part Number: DS92LV2411
Other Parts Discussed in Thread: DS92LV2412,

Hi Team,

Our customer is observing UNLOCK on DS92LV2412 Deserializer.

Do you have PCLK input jitter requirement on Serializer DS92LV2411 side or any recommendation ?

Best Regards,

Kawai

over 7 years ago

0 Ikechukwu Anyiam over 7 years ago

TI__Mastermind 35130 points

Hello Kawai-san,

The last two times there was a lock issue it had to do with proper power filtering and layout. Can you reference these posts and see if this helps the issue?

e2e.ti.com/.../681014
e2e.ti.com/.../791688

Regards,
I.K.

0 Kawai over 7 years ago in reply to Ikechukwu Anyiam

Guru 19785 points

Hi I.K.-san,

I am understanding that DS92LV24x1/24x2 are noise sensitive and may need better power filtering. Customer had checked power supply noise however it is under the datasheet spec 50mV. In this case what is the criteria for DS92LV2412 not to be unlocked ?
Customer is requesting the design target to distinguish whether the design is good or no good.

Same thing can be said to the PCLK jitter requirement. I had experienced a case that by improving the PCLK jitter deserializer unlock went away. Would you be able to advise us the criteria or recommendation for the PCLK jitter inoformation ? Would 0.3UI be good enough ?

Best Regards,
Kawai

0 Ikechukwu Anyiam over 7 years ago in reply to Kawai

TI__Mastermind 35130 points

Hello Kawai-san,

Let's keep the discussion to this thread: e2e.ti.com/.../2535432

I will also need to check this for you and hopefully have information by the end of this week.

Regards,
I.K.

0 Kawai over 7 years ago in reply to Ikechukwu Anyiam

Guru 19785 points

Hi I.K.-san,

Sure, let's keep discussion on the another thread.

Best Regards,
Kawai

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DS92LV2411: PCLK jitter requirement