SPRACU5C June 2021 – September 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
It is recommended to provide a power switch to control the VBUS supply to externally connected device and protect power switch input supply from being overloaded.
The Power switch output connects to the USB type A connector. It is recommended to connect a capacitor (>120-μF) to the VBUS supply close to the connector.
The USB0_DRVVBUS signal with an internal pulldown is used to enable the VBUS power switch. An external pulldown near to the power switch enable (EN) pin is recommended. Connection of USB0_VBUS (VBUS supply input including Voltage Divider / Clamp) is optional.
If the power switch used has an OC (over current) indication output, pullup the OC indication output and connect to a processor IO (input).
It is recommended to connect USB0_ID pin to VSS through a 0 Ω resistor.