DAC38J84 PRBS uses 8b10b?

Scott Watson43

Other Parts Discussed in Thread: DAC38J84

Does the DAC38j84 check PRBS before or after the 8b10b decode? Does the PRBS sequence need to be continuous within a lane or across lanes for a multi-lane configuration?

over 10 years ago

0 Matt Guibord over 10 years ago

TI__Genius 17340 points

Hi Scott,

The PRBS sequence does not go through any encoding. You can consider it to be generated at the 10-bit level (after 8b/10b) and checked before the 8b/10b decoding in the receiver.

The PRBS sequence is done at the lane level. So each lane acts independent of the other lanes, i.e. "it is continuous within a lane". Each lane is running the same sequence.

Regards,
Matt Guibord

0 Scott Watson43 over 10 years ago in reply to Matt Guibord

Prodigy 70 points

Matt,

Thank you for the clear explanation! This helps a lot!

-Scott

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DAC38J84 PRBS uses 8b10b?