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Altera_Forum
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10 years ago

How to get the phase synchronization of the transceiver after the serdes?

I want to implement phase synchronization after serdes transmission. The recovery clock from CDR is phase aligned with transmitted side's clock after every power cycle. How to do this? Any one can h...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

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I want to do the phase alignment between the ref_clk of the transmitted side and the recovery clock of CDR in the receiving side? I only found the frequency synchronization, but the initial phase in the receiving side is not same with the transmitted side. What's wrong for the Altera PHY?

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CDR is based on deriving clock from data transitions. Original absolute tx clock phase is unknown and is not carried in tx data.

Tx data would have any offset from tx clock edge. Your request is unrealistic.