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Number of priority levels

May Fong Lee
Intellectual 880 points

Hi all,

Like to find out what is the number of priority levels for hardware interrupts on DM8148.

Please advise or direct me to the relevant documents to find out these values.

I had already looked into the TMS320DM814x DaVinci Technical Reference Manual and Datasheet but no information available.

Thanks.

Regards

May

  • 0
    TI__Guru**** 170625 points

    Hi May,

    I assume you refer to interrupts towards the Cortex-A8 ARM processor.

    The information regarding Cortex-A8 Interrupt Controller priority is available at the DM814x TRM, chapter 14 ARM Interrupt Controller (AINTC). Please have a look into:

    section 14.1.4 Environment with Figure 14-2. Interrupt Controller Block Diagram
    section 14.2.3.2.2 Priority Masking
    section 14.2.3.3 Priority Sorting
    section 14.3.1 Initialization Sequence
    registers INTCPS_IRQ_PRIORITY, INTCPS_FIQ_PRIORITY, INTCPS_THRESHOLD, INTCPS_ILR0-127

    Regards,
    Pavel

  • 0 in reply to Pavel Botev
    Intellectual 880 points

    Hi Pavel,

    Thanks. I found my answer at section 14.1.4.


    Regards

    May