SPRUIM2H May 2020 – October 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
Table 4-25 shows configuration pins assignment to functions when boot mode is the USB mode.
USB Configuration Fields for Primary Boot Mode | |||
---|---|---|---|
BOOTMODE Pins | Field | Value | Description |
8 (13(1)) | Mode | 0 | DFU (USB device firmware upgrade) |
1 | Host (MSC boot) | ||
7 | Lane Swap | 0 | D+/D- lines are not swapped |
1 | D+/D- lines are swapped |
Table 4-26 summarizes the USB pin configuration done by ROM code for USB boot device on port 0.
Device Pin | Module Signal | Pull Enable | Pull Direction | Driver Index | Rx En/Dis | Tx En/Dis | Pinmux Sel |
---|---|---|---|---|---|---|---|
USB0_DRVVBUS | USB0_DRVVBUS | Enable | Down | 0 | Disable | Enable | 0 |
Note that other USB pins do not have pin mux options. USB_DRVVBUS is configured in DFU mode even though it is not used.
Note on USB backup boot
Configurability (pins) of these options do not exist in the USB backup boot mode.