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Altera_Forum's avatar
Altera_Forum
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12 years ago

Transceiver placement issue

Hi,

There is one block, four transceivers in an EP4CGX22 FPGA chip. If i need to use it to design two independent transceiver links, each one with 2 transceiver channel bonded, is it OK?

Thanks a lot.

Yaoting

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    12 years ago

    You don't say which package. If it is the F169 version, that only has 2 transceivers. The F324 version has 4.

    But even still, if you read page 1-37 of Volume 2 of the Cyclone IV handbook it says:

    "When implementing ×2 bonded channel configuration in a transceiver block,

    remaining channels 2 and 3 are available to implement other non-bonded channel

    configuration."

    So you can only have one bonded design, not two.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    12 years ago

    Besides the different clocking approaches what are other benefits or risks between using 2 non-bonded channel protocol and one bonded X2 channel protocol?

    Appreciate your helps.