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F29H859TU-Q1: Pin allocation for Enhanced Capture (eCAP) encoder & PWM based Pulse counter

chetan bodar
Prodigy 10 points
Part Number: F29H859TU-Q1

Tool/software:

Dear TI Team

I need your support for some pin allocation for Enhanced Capture (eCAP) encoder & PWM based Pulse counter.

  • Question-1 : can we allocate PWM pins for Enhanced Capture (eCAP) encoder & PWM based Pulse counter as input pin ?
  • Question-2 : if above statement is not correct let me know how to allocate  (eCAP) encoder , reference guide and specifica pins details.

Thanks & Regards,

Chetan

  • 0
    TI__Mastermind 27420 points

    Hello Chetan,

    1. On F29 devices, the Input X-BAR is used to connect I/Os to the ECAP. Each Input X-BAR can select an GPIO or AIO as an input. You could configure a PWM output to exist on a GPIO and then use Input X-BAR to read  the PWM output and send it to the ECAP.

    Thank you,

    Luke

  • 0 in reply to Luke Jones
    Prodigy 10 points

    Hi Luke,

    Thanks for your support!!

    if my understanding correct, Output X-BAR Output pins mentioned in the datasheet from 1 to 16 can be used from any kinf of pulse input & PWM inputs is that correct?

    Ref. Page Table 5-3. Digital Signals (continued) : Page 83 of dtatasheet SPRSP93 – NOVEMBER 2024.

    Thanks & Regards

  • 0 in reply to chetan bodar
    TI__Mastermind 27420 points

    Hi Chetan,

    You can refer to the Output X-BAR chapter in the Technical Reference Manual instead of the datasheet to see the full list of connections for output XBAR, but PWM outputs are not included in this list if I'm not mistaken. I think you would need to route the PWMs through the CLB and then use Output X-BAR to select CLB outputs if you wanted to change which pins the PWM outputs are routed to.

    Thank you,

    Luke