SPRUJC6A December 2024 – July 2025 AM2752-Q1 , AM2754-Q1
USB Boot Configuration Fields shows configuration pins assignment to functions when boot mode is the USB mode.
| USB Configuration Fields for Primary Boot Mode | ||
|---|---|---|
| Field | Value | Description |
| Mode | 0 | DFU |
| Lane Swap | 0 | No swapping of DP/DM |
| 1 | DP/DM is swapped | |
| Core Voltage | 0 | VDD_CORE is .85 |
| 1 | VDD_CORE is .75 | |
USB Port 0 Pin Usage 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 | Pinmux Sel | Pad Configuration Register |
|---|---|---|---|---|---|---|---|
| USB0_DRVVBUS | USB0_DRVVBUS | Disable | NA | 0 | Disable | 0 | PADCONFIG149 |
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.