SN75DP159: CDR Timing Measurement

Jim CHEN

Part Number: SN75DP159

Dear Team,

My customer would like to check below CDR timing spec(td3 and td4) on their board.

But we don't know where could we measure the retimer mode indicator and CDR Active indicator on hardware pin?

Please help to advise.

Thank you.

Jim

0 David (ASIC) Liu over 6 years ago

Jim

Why do they need to know this info? This is TI internal measurement and we can't share it with the customer.

Thanks

David

0 Jim CHEN over 6 years ago in reply to David (ASIC) Liu

David,

The customer would like to confirm their design follow datasheet spec.

If we cannot share with the customer, shouldn't we hide this spec on datasheet?

BTW, DP159 has VCC/VDD/OE power-up sequence, but do we have power-off sequence for DP159?

Thank you.

Jim

0 Ikechukwu Anyiam over 6 years ago in reply to Jim CHEN

Hi Jim,

From the datasheet, it looks like td3 and td4 are internal to the device and not something customers can physically measure.

There is no specific power off sequence.

Regards,

I.K.

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