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TDA4VM: Correct MCU_BOOTMODE and BOOTMODE configuration for primary and backup boot source

John Weber
Intellectual 511 points

Part Number: TDA4VM

I am trying to configure a primary boot source of MMC1 (microSD card) with a backup boot source of USB0 (DFU mode.

Can you please double check my bootmode settings to see if they are correct?

MCU_BOOTMODE[5:3]: 3'b000 (MMC/SD card)

MCU_BOOTMODE[6] (MCU_ONLY): 1'b0

MCU_BOOTMODE[9:8] (POST Selection): 2'b11

BOOTMODE[0] (Primary Boot Mode B): 1'b1

BOOTMODE[3:1] (Backup Boot Mode):  3'b001  (USB device DFU)

BOOTMODE[6:4] (Primary Boot Mode Config): 3'b100  (Port: 1, Bus width: 4, Raw)

BOOTMODE[7] (Backup boot mode config): 1'b0 (select USB0)

Our problem is that we are not seeing that USB0 DFU if no microSD card is plugged in.

Thanks!