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TMS570LC4357: Low power mode

Christopher TRITANT
Expert 1080 points

Part Number: TMS570LC4357

Hello,

Some sub-modules can be entered in Low-power mode.

The Low-power mode, shuts down all the clocks to the module.

Some sub-modules can be put in either local or global low-power mode:

- In global low-power mode, no registers are visible to the software; nothing can be written to or read from any register. Is it the same thing about the local power mode ?

- If the global power mode is enabled, shall we enabled also the local power mode ?

Best regards,

Christopher

  • 0
    TI__Mastermind 49120 points
    Hi Christopher,

    Global power-down mode is controlled via the Peripheral Central Resource (PCR) controller's PSPWRDWNx registers. These registers can be used to gate off the peripheral clocks (VCLK) to the individual modules. Once the VCLK to a module is gated off, the register frame is not accessible. Any access will result in a violation (data abort for the CPU).

    A local power-down only gates the clock off to the state machine within the module. The registers can still be accessed and the CPU can take the module out of local power-down by setting/clearing the local power-down control bit.

    Global power-down overrides any local power-down configuration.

    Regards,
    Sunil