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IWR1642: What's the GIO external interrupt respond delay time and the max frequency to support?

Chris Meng
Mastermind 37756 points
Part Number: IWR1642

Hi,

What's the GIO external interrupt respond delay time? What's the max frequency of external interrupt to GIO which can support?

  • 0
    TI__Guru 50240 points
    Hi Chris,

    We are still looking into this query and should have an answer for you later today.


    Cheers,
    Akash
  • 0 in reply to Akash Gondalia
    TI__Mastermind 37500 points

    Hello Chris,

    The GPIOs can be mapped through the 1642 GIO module as DMA or Interrupt actions.   In the case of Interrupts, the specific masked GPIO can be set to pulse, or level sensing, and then mapped as one of two interrupt outputs.  This is described in section 16 of the Technical Reference Manual.  

    Related to how fast can a response be made, I will ask the systems team, I think it also depends on the software setup.   If the software is single threaded, and we are pending a mailbox return from MSS to BSS or MSS to DSS, then the  response rate will be based on the longest mailbox delay time.   If there are pre-emptive modes, it would be the low level service rate in the software.   

    I don't have a direct answer for the software response rate, I hope to forward the systems answer soon.

    Regards,

    Joe Quintal

     

  • 0 in reply to Radio-Joe
    TI__Mastermind 37756 points
    Joe,

    Any update on how fast can a response be made based on hardware capability?
  • 0 in reply to Chris Meng
    TI__Mastermind 37500 points

    Hello Chris,

    The design team said this is very software dependent.  Typical times with software structured for fast response are 10ms.

    Regards,

    Joe Quintal