Forum Discussion

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

about FIR compiler

why FIR compiler have the limit on the number of the coefficient set in use of multiple coefficient sets's function.Is it because of the resource of the hard ware or others reason?who can tell me ,thanks.

3 Replies

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

    --- Quote Start ---

    why FIR compiler have the limit on the number of the coefficient set in use of multiple coefficient sets's function.Is it because of the resource of the hard ware or others reason?who can tell me ,thanks.

    --- Quote End ---

    multiple sets require storage and muxes. Otherwise computation resource is same one.

    So yes it is hardware resource, speed as well as complexity of ip.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    --- Quote Start ---

    multiple sets require storage and muxes. Otherwise computation resource is same one.

    So yes it is hardware resource, speed as well as complexity of ip.

    --- Quote End ---

    if i use multiple parallel stage ,each with a FIR compiler,is that ok in the situation when the total number of coefficient are out of the limit on single IP and each stage are not?
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    --- Quote Start ---

    if i use multiple parallel stage ,each with a FIR compiler,is that ok in the situation when the total number of coefficient are out of the limit on single IP and each stage are not?

    --- Quote End ---

    If resource helps it should be ok then you have to mux the relevant ip