USB4712

DS00002774G-page 22

 2018-2021 Microchip Technology Inc.

Note 8-1

The Auto-FlexConnect feature requires that USB Battery Charging (BC1.2) be enabled.

For detailed information on utilizing the USB4712 FlexConnect feature, refer to the application note “USB4712 Auto-

FlexConnect Operation

”.

8.3

USB to GPIO Bridging

The USB to GPIO bridging feature of the USB4712 provides system designers expanded system control and potential

BOM reduction. General Purpose Input/Outputs (GPIOs) may be used for any general 3.3V level digital control and input

functions.

Commands may be sent from the USB Host to the internal Hub Feature Controller device in the Microchip hub to per-

form the following functions:

• Set the direction of the GPIO (input or output)

• Enable a pull-up resistor

• Enable a pull-down resistor

• Read the state

• Set the state

For detailed information on utilizing the USB4712 USB to GPIO bridging feature, refer to the application note “USB to

GPIO Bridging with Microchip USB4712 Hub

”.

8.4

Commands may be sent from the USB Host to the internal Hub Feature Controller device in the Microchip hub to per-

form the following functions:

8.5

USB to SPI Bridging

The USB to SPI bridging feature of the USB4712 provides system designers expanded system control and potential

BOM reduction. The use of a separate USB to SPI device is no longer required and a downstream USB port is not lost,

as occurs when a standalone USB to SPI device is implemented.

Commands may be sent from the USB Host to the internal Hub Feature Controller device in the Microchip hub to per-

form the following functions:

• Enable SPI Pass-Through Interface

• SPI Write/Read

• Disable SPI Pass-Through Interface

For detailed information on utilizing the USB4712 USB to SPI bridging feature, refer to the application note “USB to SPI

Bridging with Microchip USB4712 Hub

”.