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Honored Contributor
Honored ContributorCyclone IV GX Tranceivers
I am trying to interface a tranceiver link to a fiber link. The fiber link expects lvpecl. How exactly would I interface that. The tranceivers on the Cyclone IV transmit 1.5 PCML, and th...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- Hi Just to say I made a print and I am successfully driving a SFP fibre-optic module (I used a Finistar FTLF1322P1xTR). There was no circuitry needed, the voltage swing is the only consideration because the SFP module is capacitor coupled and terminated anyway. It was a little scary because I did this when the Cyclone IV GX was a very new chip and nobody could say if it would work. But everything is working just fine. No problem. --- Quote End --- So I built the Board using my fiber tranceiver and a cyclone iv gx. It works half the time. Sometimes I power it up and it works and continues to work. And other times I power it up and it recieves nothing. What did you do with the reset. Did you do automatic lock or manual lock. I also noticed my rx_freqlocked bit is stuck high. did you have the same problem.
