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TMS320F28377D-EP: Flash boot mode & Disabling CPU2

Manish Kumar5
Prodigy 60 points
Part Number: TMS320F28377D-EP

Hi ,

Reference manual  SPRUHM8G section 3.2 Device Boot Philosophy states following:

"For dual core devices, CPU1 is the master controller and controls the boot process. Each CPU goes through its own boot procedure, but under the control of CPU1. The exception to this rule is when CPU2 is set to
boot-to-flash, in which CPU1 is not involved.

1. How can be CPU2 booting stalled in TMS320F2837-EP , when used in flash boot mode.

(I needed a -55C rated part , so I am using this part, but I want to disable CPU2 for certain project specific reason. I have pulled-up the GPIO72 and GPIO84 to 3.3V to configure the MCU in Flash-boot mode.)

2. Is there a way to un-power CPU2, if possible? However i did not find any separate supply pins for the CPU1 & CPU2

Thanks in advance.

-Manish 

 

  • 0
    TI__Guru** 113865 points

    Hi Manish,

    CPU2 does not boot unless CPU1 application send an IPC message to CPU2 to boot. Till CPU2 remains in IDLE mode. In application user can keep CPU2 in reset mode ( via CPU2RESCTL register) if needed.

    Regards,

    Vivek Singh