PMP22220: How to into ROM mode?

Jeffrey Lan

Prodigy 50 points

Part Number: PMP22220

How to perform this act in source code main.c line123:

if(PMSBusRegs.PMBCTRL1.bit.SALVE_ADDR == 0x7e)

{

pmbus_write_rom_mode();

}

over 1 year ago

0 Robert Taylor1 over 1 year ago

TI__Expert 6130 points

Hi Jeffrey,

Sorry for the late response, I have asked the original designer to take a look here and get back to you.

0 Bosheng Sun over 1 year ago in reply to Robert Taylor1

TI__Expert 7060 points

Hi Jeffrey,

This function is used to check if flash trim checksum is valid, if not then go to ROM. In almost all the cases the device has a valid flash trim checksum, therefore this function is never executed.

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PMP22220: How to into ROM mode?