USB7252 datasheet(22/65 Pages) MICROCHIP

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USB7252

DS00002736D-page 22

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2018 - 2020 Microchip Technology Inc.

TABLE 3-6:

PROGRAMMABLE FUNCTIONS DESCRIPTIONS

Function

Buffer

Type

Description

If Unused

Master SMBus/I2C Interface

MSTR_I2C_CLK

I/O12

Bridging Master SMBus/I2C controller clock (SMBus/I2C controller

1). External 1k-10k pull-up resistors to 3.3V are required if the I2C

Master Interface is to be used.

Weak pull-

down to

GND

MSTR_I2C_DATA

I/O12

Bridging Master SMBus/I2C controller data (SMBus/I2C controller

1). External 1k-10k pull-up resistors to 3.3V are required if the I2C

Master Interface is to be used.

Weak pull-

down to

GND

Slave SMBus/I2C Interface

SLV_I2C_CLK

I/O12

Slave SMBus/I2C controller clock (SMBus/I2C controller 2). Exter-

nal 1k-10k pull-up resistors to 3.3V are required if the I2C Slave

Interface is to be used.

Weak pull-

down to

GND

SLV_I2C_DATA

I/O12

Slave SMBus/I2C controller data (SMBus/I2C controller 2). External

1k-10k pull-up resistors to 3.3V are required if the I2C Slave Inter-

face is to be used.

Weak pull-

down to

GND

UART Interface

UART_TX

O12

UART Transmit

Weak pull-

down to

GND

UART_RX

UART Receive

Weak pull-

down to

GND

UART_nCTS

UART Clear To Send

Weak pull-

down to

GND

UART_nRTS

O12

UART Request To Send

Weak pull-

down to

GND

UART_nDCD

UART Data Carrier Detect

Weak pull-

down to

GND

UART_nDSR

UART Data Set Ready

Weak pull-

down to

GND

UART_nDTR

O12

UART Data Terminal Ready

Weak pull-

down to

GND

I2S Interface

I2S_SDI

I2S Serial Data In

Weak pull-

down to

GND

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