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Altera_Forum
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10 years ago

Clock Data Recovery Stratix V (time needed)

Good evening, I want to know how much time is needed to lock the Clock Data Recovery (CDR) circuit. I am working on a project in which: 1) the data rate is 10Gbps 2) works with TDMA oper...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Hi,

As per the device datasheet, minimum time required for the CDR to lock to data after the rx_is_lockedtodata signal goes high is 4us. You may refer to Table 23. Transceiver Specifications for Stratix V GX and GS Devices of the SV device datasheet for further details.

I believe the OLT solution provided by Altera might have some custom logic to enable fast locking. You might need to contact Altera on this.