TUSB322I datasheet(3/37 Pages) TI2

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4 Pin Configuration and Functions

INT_N/OUT3

EN_N

GND

VBUS_DET

VDD

DIR

ADDR

Figure 4-1. RWB Package 12-Pin X2QFN Top View

Table 4-1. Pin Functions

I/O

DESCRIPTION

NAME

NO.

CC1

I/O

Type-C configuration channel signal 1

CC2

I/O

Type-C configuration channel signal 2

VBUS_DET

5-V to 28-V VBUS input voltage. VBUS detection determines UFP attachment. One 900-kΩ

external resistor required between system VBUS and VBUS_DET pin.

DIR

DIR of plug. The open drain output indicates the detected plug orientation: Type-C plug

position 2 (H); Type-C plug position 1 (L).

ADDR

Tri-level input pin to indicate I2C address or GPIO mode:

H - I2C is enabled and I2C 7-bit address is 0x67.

NC - GPIO mode (I2C is disabled)

L - I2C is enabled and I2C 7-bit address is 0x47.

ADDR pin should be pulled up to VDD if high configuration is desired

INT_N/OUT3

The INT_N/OUT3 is a dual-function pin. When used as the INT_N, the pin is an open drain

output in I2C control mode and is an active low interrupt signal for indicating changes in

I2C registers. When used as OUT3, the pin is in audio accessory detect in GPIO mode: no

detection (H), audio accessory connection detected (L).

SDA/OUT1

I/O

The SDA/OUT1 is a dual-function pin. When I2C is enabled (ADDR pin is high or low), this

pin is the I2C communication data signal. When in GPIO mode (ADDR pin is NC), this pin

is an open drain output for communicating Type-C current mode detect when the TUSB322I

device is in UFP mode: default current mode detected (H); medium or high current mode

detected (L).

SCL/OUT2

I/O

The SCL/OUT2 is a dual function pin. When I2C is enabled (ADDR pin is high or low), this

pin is the I2C communication clock signal. When in GPIO mode (ADDR pin is NC), this pin

is an open drain output for communicating Type-C current mode detect when the TUSB322I

device is in UFP mode: default or medium current mode detected (H); high current mode

detected (L).

Open drain output; asserted low when the CC pins detect device attachment when port is a

source (DFP), or dual-role (DRP) acting as source (DFP).

GND

Ground

EN_N

EN_N. Active low enable.

VDD

Positive supply voltage

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TUSB322I

SLLSEO5D – OCTOBER 2015 – REVISED MARCH 2021

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