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CDai0's avatar
CDai0
Icon for New Contributor rankNew Contributor
7 years ago

Transceiver toolkit reference design: why is BER never 1 or close to 1

I have questions on the reference design for transceiver toolkit on cyclone 10 dev kit provided here: https://fpgacloud.intel.com/devstore/platform/17.1.1/Pro/cyclone-10-gx-xcvr-toolkit-reference-des...
Deshi_Intel's avatar
Deshi_Intel
Icon for Regular Contributor rankRegular Contributor
7 years ago

​Hi ChenXi,

Understood your use case but as I explained earlier. Don't rely on ttk green/yellow light indicator as it's not accurate.

The recommended way is to check the rx_is_lockedtodata or rx_is_lockedtoref to really tell whether CDR loose lock or not as shown in attached diagram.

Thanks.

Regards,

dlim