SLVUCF6 july 2023
An onboard USB2ANY acts as a USB adapter to the PMIC. This adapter allows I2C communication to the host PC as well as GPIO assertion and fault monitoring. By default, the onboard MSP430 is powered by the 5 V from the uUSB cable and a discrete 3.3V LDO. Additional configurations are allowed by asserting jumpers J1 and J7, shown in Table 4-1and Table 4-2. The onboard adapter must have power applied through a valid configuration.
Jumper Pin Selection | Description |
---|---|
Pins 1 and 2 (Default) | External 3.3V LDO supplies the I2C pins. |
Pins 3 and 4 | BUCK2 output (VBUCK2) supplies the I2C pins. |
Jumper Pin Selection | Description |
---|---|
Pins 1 and 2 | VSYS supplied by external power supply (EXTPWR) |
Pins 2 and 3 (Default) | VSYS supplied by 5 V from uUSB cable (5VUSB) |
The following jumpers in Table 4-3 connect the USB adapter to PMIC functional pins. These can be disabled to GND for flexibility.
Jumper | PMIC Pin |
---|---|
J8 | VSEL |
J9 | MODE/STBY |
J10 | MODE/RESET |