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  1. Embedded Software & Tools
  2. EXT_EP-10118

ERRATA : Pulsar (R5F) : High priority interrupt is missed by VIM

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Details

    • Bug
    • Status: Declined
    • Medium
    • Resolution: Unresolved
    • PDK
    • PDK-6975
    • PROCESSOR_SDK_07.00.00
    • PROCESSOR_SDK_9.x
    • j721e-evm
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      The best guarantee of priority is to use FIQ instead of higher priority critical interrupts, R5F ensures FIQ before IRQ.
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      The best guarantee of priority is to use FIQ instead of higher priority critical interrupts, R5F ensures FIQ before IRQ.
    • Please see attached mail thread for description

    Description

      Description:
      The VIM will not always interrupt the currently active interrupt when a higher priority interrupt arrives immediately afterwards. In these cases, the higher priority interrupt will only be taken after the completion of the current lower priority interrupt or when an even higher priority interrupt arrives. The impact of this issue is higher than expected interrupt latency for the high priority interrupt. Both Vector Interface (VIC) servicing and MMR Interface servicing modes of VIM are affected.

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            syncuser TI User
            syncuser TI User
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              Created:
              Updated: