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Altera_Forum
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16 years ago

communicatiom between external board running CDR and FPGA

hi all i need your help please. communication between external board running CDR and FPGA I am working in connecting Startix Gx 'EP1SGX40GF1020C5' FPGA with external board . the board...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

There are several serial protocols or use your own, for example pass bits to 850Mbps by first passing your data(as packet + header) followed by alternating zero/ones till next packet. You will need another fpga to do that...the receiver will then detect packets from the agreed header(FSM).

Your own CDR: Before serdes era, we used to do that inside fpgas. There is plenty of literature, check xilinx papers. I will try to get some hopefully tomorrow.