USB7252P datasheet(43/64 Pages) MICROCHIP

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2018 - 2020 Microchip Technology Inc.

DS00003561A-page 43

USB7252P

8.8

USB to GPIO Bridging

The USB to GPIO bridging feature 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 USB to GPIO bridging feature, refer to the application note “USB to GPIO Bridg-

ing with Microchip USB7202 and USB725x Hubs”, which can be found on the Microchip USB7252P product page at

www.microchip.com/USB7252P.

8.9

USB to I2C Bridging

The USB to I2C bridging feature provides system designers expanded system control and potential BOM reduction. The

use of a separate USB to I2C device is no longer required and a downstream USB port is not lost, as occurs when a

standalone USB to I2C 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:

• Configure I2C Pass-Through Interface

• I2C Write

• I2C Read

For detailed information on utilizing the USB to I2C bridging feature, refer to the application note “USB to I2C Bridging

with Microchip USB7202 and USB725x Hubs”, which can be found on the Microchip USB7252P product page at

www.microchip.com/USB7252P.

8.10 USB to SPI Bridging

The USB to SPI bridging feature 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 USB to SPI bridging feature, refer to the application note “USB to SPI Bridging

with Microchip USB7202 and USB725x Hubs”, which can be found on the Microchip USB7252P product page at

www.microchip.com/USB7252P.

8.11 USB to UART Bridging

The USB to UART bridging feature provides system designers with expanded system control and potential BOM reduc-

tion. When using Microchip’s USB hubs, a separate USB to UART device is no longer required and a downstream USB

port is not lost, as occurs when a standalone USB to UART 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/Disable UART Interface

• Set UART Interface Baud Rate

• UART Write

• UART Read

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