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AHB split retry response

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Note: This was originally posted on 9th December 2008 at http://forums.arm.com

IN AMBA AHB , there are split and retry response. These are 2 cycle responses.
whole SPLIT sequence is given in the spec. but my doubt is in which scenario slave
has to to issue SPLIT and RETRY response?

Waiting for the reply. Thanks in advance.
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  • 0
    Note: This was originally posted on 10th December 2008 at http://forums.arm.com

    Hi,

    For simple AHB slave only ERROR and OK responses are fine. but if I have multiple master
    and slaves , then I think I need to give SPLIT  and RETRY responses both. I understood point
    behind SPLIT  response .

    But for RETRY response what will be the scenario??

    Thanks ,
    vlsiuser



    Hi vlsiuser...

    Actually when to generate split and retry is highly dependent on the system architecture...
    and also the designer...

    When slave cannot respond to the master in predefined wait states..
    Split or retry is given for better bus usage.. so other master can access the bus...
Reply
  • 0
    Note: This was originally posted on 10th December 2008 at http://forums.arm.com

    Hi,

    For simple AHB slave only ERROR and OK responses are fine. but if I have multiple master
    and slaves , then I think I need to give SPLIT  and RETRY responses both. I understood point
    behind SPLIT  response .

    But for RETRY response what will be the scenario??

    Thanks ,
    vlsiuser



    Hi vlsiuser...

    Actually when to generate split and retry is highly dependent on the system architecture...
    and also the designer...

    When slave cannot respond to the master in predefined wait states..
    Split or retry is given for better bus usage.. so other master can access the bus...
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