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Altera_Forum's avatar
Altera_Forum
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16 years ago

need help for triple speed ethernet

Hi every body

i am performing my graduate project for my computer engineering certification .

I am making router by using de2 board

but as we know router has multiply port and I will make two ethernet port by using triple speed ethernet 9.1

but if I select more than one port in triple speed ethernet configuration .

that will cause no fifo memory in this controller and i must use independent memory connected to triple speed ethernet called multi channel shared memory fifo

but i don't have any idea how i can connect this memory with triple speed ehternet

please if any one have any idea help me and i prefer to give me example contain multiply ethernet port by using triple speed ethernet

thank you for your reading

3 Replies

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

    I have the same question,and I also don't konw how to solve the follow problems:

    file:///C:/Program%20Files/QQ/Users/490482109/Image/SD`%M~U8FK)9C`WYDDA1E~Y.jpg
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    I have the same question,and I also don't konw how to solve the follow problem:"error:triple_speed_ethernet_0.receive_0 and multiplexer_0.in0 must be on the same clock domain,since they're connected.

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

    You must give the same clock to the triple speed ethernet mac and the multiplexer. If you want to use two different clocks, then put a dual clock FIFO between them.