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TMS320F28388D: CPUSEL Register

huijin Wang
Intellectual 270 points
Part Number: TMS320F28388D


Dear sir,

I found that there are some CPUSELx registers in TMS320F 28388D which are used to configure whether  a peripheral is connected to CPU1 or CPU2.

The Technical Reference Guide says that this determines the peripheral's clock is connected to CPU1 or CPU2. I don't know what the mean is and what the influence is?

I wonder: If I connect ePWM to CPU1, can  CPU2 configure ePWM1 and control it? Can CPU2 receive the interrupt from ePWM1?

  • 0
    TI__Guru** 115881 points

    Hi,

     I wonder: If I connect ePWM to CPU1, can  CPU2 configure ePWM1 and control it? Can CPU2 receive the interrupt from ePWM1?

    No, if you connect a peripheral to CPU1, CPU2 can not configure and control that peripheral. Only CPU1 can do that but CPU2 can receive the interrupt.

     The Technical Reference Guide says that this determines the peripheral's clock is connected to CPU1 or CPU2. I don't know what the mean is and what the influence is?

    CPU1 and CPU2 subsystem have their own SYSCLK. Based on CPUSEL, clock for the peripheral is derived from CPU1.SYSCLK or CPU2.SYSCLK and also the clock enable configuration from that particular CPU is used.

    Hope this is clear.

    Regards,

    Vivek Singh