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Altera_Forum's avatar
Altera_Forum
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15 years ago

In the Master Read Burst, how to recover from errors

In the Master Read Burst, if waitrequest signal has been effective, then how can I terminate the transmission, thank you

3 Replies

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

    I'm not sure I understand your question. When the waitrequest signal is asserted, the transfer is paused. When it is deasserted, it continues, until the end of the burst operation.

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

    I apologize for my ambiguous expression，I mean the master how to terminate the ongoing read burst

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

    You can't. Once you start a burst operation, you need to complete it.

    --- Quote Start ---

    When a master starts a burst with an address of <a> and a burstcount value of <b>,

    it is committing to <b> consecutive transfers starting at address <a>. The burst does

    not complete until the master transfers <b> units of data. A master cannot abort the

    burst without first exhausting remaining transfers in the current burst. The master can

    issue a new read burst before the data for the previous burst has been returned.

    --- Quote End ---

    (Avalon spec)