DS90UB960-Q1: What can cause CRC errors?

Michael Hammersley

Prodigy 15 points

Part Number: DS90UB960-Q1

Two related questions:

what are common causes of CRC errors in the deserializer?
is there a baseline or normal rate of CRC errors that would be expected in deserialization? Or are errors only seen if there's actually some sort of a problem?

over 4 years ago

0 Hamzeh Jaradat over 4 years ago

TI__Guru** 111590 points

Hello Michael,

1) CRC errors are caused by accidental changes to the data over the transmission channel. That means any external disturbance such as Noise, Reflections, cross talking ... etc may lead to CRC errors.

2) For robust operation, the transmission channel should be error free

0 Michael Hammersley over 4 years ago in reply to Hamzeh Jaradat

Prodigy 15 points

that makes sense -- thank you, hamzeh!

0 Roberto Gutierrez over 4 years ago in reply to Hamzeh Jaradat

Prodigy 21 points

Hello Hamzeh, let me jump in with a quick question

Those CRC errors can then prevent the lock from going up in the 0x4d register?

Best Regards,

Roberto Gutierrez

0 Hamzeh Jaradat over 4 years ago in reply to Roberto Gutierrez

TI__Guru** 111590 points

Hello Roberto,

No, CRC errors will not cause loss of LOCK. For losing LOCK, other types of errors are responsile such as parity errors/ sequence errors, clk errors ... etc.

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DS90UB960-Q1: What can cause CRC errors?