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TDA4VM: clock sharing /sync between Main domain and MCU domain

Colombo Carlo
Mastermind 25425 points

Part Number: TDA4VM

Hello everybody , 

We would like to share a clock signal between the Main-Domain and MCU-Domain. Specifically, we would like to synchronise a clock on the MCU-Domain with PTP and then have this signal shared as read-only with the Main-Domain, without mapping an Ethernet port to the Main-Domain.

  1. Is this possible from a hardware point-of-view (e.g. GTC)?
  2. Is this implemented by the driver in the PSDK, specifically the RA and QA?

best regards

Carlo

 

 

  • 0
    TI__Guru* 78145 points

    Hi Carlo,

    -1-

    This is possible using GTC.or even DMTimer

    • First, we will have to run PTP on MCU domain and synchronize MCU domain CPTS with a PTP master in network.
    • Once that is done, we have to configure TimeSync Router(TSR) to route either GTC/DMTimer pulse to HW push of MCU domain CPTS.
    • With this we will get periodic HW push events from CPTS(with synchronized timestamp for these events). Using this we have to establish relationship b/w timers.

    -2-

    There is currently no implementation in the PSDKLA/RA for the same.

    Regards,

    Karan