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AM6442: Affinity of encoder input and PRU

O.H
Genius 5920 points
Part Number: AM6442

Tool/software:

Hi experts,

Sorry for this basic question.

Does the AM64x support the following?
- Pulse output frequency = about 500kpps
- Input: ABZ-phase pulse type encoder (At the moment, I have no plans to input an encoder such as EnDat, BiSS, HIPERFACE, Tamagawa, etc. directly into the MPU.)

Also, is processing faster when using the PRU than when using the A53 or R5F?
If it is faster, please let me know if there are any application notes or anything.

Best regards,
O.H

  • 0
    Genius 5920 points

    Hi experts,

    Is there any update?

    Best regards,
    O.H

  • 0 in reply to O.H
    TI__Mastermind 27014 points

    Hi
    Sorry for the delay.

    O.H said:
    - Pulse output frequency = about 500kpps

    What is "kpps" here? Is it 500 KHz?

    O.H said:
    Also, is processing faster when using the PRU than when using the A53 or R5F?

    What do you mean by faster here? If we are looking at core frequency, A53 can run at 1 GHz, R5F can run at 800 MHz, whereas PRU can go up to 333 MHz. Because of non-pipelined architecture and deterministic nature of PRU, it can handle real-time constraints much better than ARM cores. For more details on PRU, please see AM64x MCU+ SDK: PRU IO.

    Regards

    Dhaval

  • 0 in reply to Dhaval Khandla
    Genius 5920 points

    Hi Dhaval,

    Thank you for your reply.

    Dhaval Khandla said:
    What is "kpps" here? Is it 500 KHz?

    Yes, 500KHz.

    Dhaval Khandla said:
    What do you mean by faster here? If we are looking at core frequency, A53 can run at 1 GHz, R5F can run at 800 MHz, whereas PRU can go up to 333 MHz. Because of non-pipelined architecture and deterministic nature of PRU, it can handle real-time constraints much better than ARM cores. For more details on PRU, please see AM64x MCU+ SDK: PRU IO.

    This means faster motor control using PWM.
    The customer is currently using FPGA, but is considering replacing it with AM64x.
    They want to use Arm for the CPU, so they cannot use C2000(CLB) etc.

    In this case, it would be helpful if you could tell me whether AM64x is compatible and if there are any similar application notes.

    Best regards,
    O.H

  • 0
    TI__Mastermind 46101 points
    O.H said:
    Input: ABZ-phase pulse type encoder (At the moment, I have no plans to input an encoder such as EnDat, BiSS, HIPERFACE, Tamagawa, etc. directly into the MPU.)

    How many instances

    O.H said:
    - Pulse output frequency = about 500kpps

    How many pins needed with this capability?

  • 0 in reply to PratheeshGangadhar
    Genius 5920 points

    Hi,

    Thank you for your reply.

    PratheeshGangadhar said:
    How many instances

    1 instance.

    PratheeshGangadhar said:
    How many pins needed with this capability?

    2 pins. Forward and reverse rotation.

    Best regards,
    O.H

  • 0 in reply to O.H
    Genius 5920 points

    Hi 

    Sorry for rush you. Is there any update?

    First of all, please let me know if it can be used with AM64x or not.

    Best regards,
    O.H

  • +1 in reply to O.H
    TI__Mastermind 46101 points
    O.H said:
    First of all, please let me know if it can be used with AM64x or not.

    Yes, we believe AM64 EQEP and EPWM is capable of meeting these requirements.  

  • 0 in reply to PratheeshGangadhar
    Genius 5920 points

    Thank you for your supports. I understood.

    Best regards,
    O.H