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Altera_Forum's avatar
Altera_Forum
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16 years ago

SOPCS FIFO vs External FIFO

I am looking into a new design that will require quite a few FIFO memories. I am trying ot decide whether to use the standard SOPC FIFO or a FIFO external to the SOPC system (internal FBGA memory). We have working designs that have implemented FIFO's with their own custom logic that I could copy and adjust. The questions are as follows :-

1. If I used the internal SOPC FIFO how would I go about trasnferring data to and from outside the SOPC system ?

2. If I used a FIFO external to the SOPC system, how would I interface data to and from this FIFO into the SOPC system ?

3. Are there any other issues that I should consider ?

Thank you in advanced

Shmuel

1 Reply

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

    Hi,

    I hear about the use of "Avalon to External Bus Bridge" and "External to Avalon Bus Bridge" IP Blocks (from university program) for interfacing a peripheral with the Avalon BUS (i.e. the NIOS II, so the SOPC module...).

    But I don't know how to use it with a FIFO... I think with a SOPC FIFO it will be more easy...

    I have a similar problem to solve...

    Look here in my post (http://forum.niosforum.com/forum/index.php?showtopic=6831) about transfering data from a DCFIFO to an SRAM memory block.