Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

Burst size and burst length Avalon MM bridge

Hi,

I am using the avalon memory mapped bridge to interface the FPGA with an external DDR2 chip.

The naming conventions are a little confusing to me.

In the DDR2 SDRAM controller uniPHY IP, I see a field - Maximum avalon-MM burst length, whereas in the avalon MM pipeline bridge IP, I see - Maximum burst size.

My understanding is that they are the same.

Reason - I looked at the interconnect on qsys, and I see no burst adapter being used. However, this is my understanding and I might be wrong. Can someone confirm this for me?

Thanks,

VK

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    Yes, they are the same.

    In DDR2, the port name is avl_size which have the same meaning like burst size in Avalon MM pipeline.

    (This message was posted on behalf of Intel Corporation)