CC1

1

2

3

7

8

4

5

6

12

11

10

9

CC2

CURRENT_MODE

PORT

VBUS_DET

OUT2

OUT1

VCONN_FAULT

VDD

DIR

GND

ID

3

TUSB321AI

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SLLSER2A – OCTOBER 2015 – REVISED MAY 2017

Product Folder Links: TUSB321AI

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5 Pin Configuration and Functions

RWB Package

12-Pin X2QFN

Top View

Pin Functions

PIN

TYPE

DESCRIPTION

NAME

NO.

CC1

1

I/O

Type-C configuration channel signal 1

CC2

2

I/O

Type-C configuration channel signal 2

CURRENT_MODE

3

I

Advertise VBUS current. This 3-level input is used to control current advertisement in DFP

mode or DRP mode connected as source. (See Table 2.)

L - Default Current. Pull-down to GND or leave unconnected.

M - Medium (1.5A) current. Pull-up to VDD with 500-kΩ resistor.

H - High (3.0A) current. Pull-up to VDD with 10-kΩ resistor.

PORT

4

I

Tri-level input pin to indicate port mode. The state of this pin is sampled when VDD is active.

H - DFP (Pull-up to VDD if DFP mode is desired)

NC - DRP (Leave unconnected if DRP mode is desired)

L - UFP (Pull-down or tie to GND if UFP mode is desired)

VBUS_DET

5

I

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

external resistor required between system VBUS and VBUS_DET pin.

VCONN_FAULT

6

O

Open-drain output and is asserted low for when VCONN over-current fault is detected.

OUT1

7

I/O

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

TUSB321AI device is in UFP mode. Default current mode detected (H); medium or high

current mode detected (L). (See Table 2.)

OUT2

8

I/O

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

TUSB321AI device is in UFP mode: default or medium current mode detected (H); high

current mode detected (L). (See Table 2.)

ID

9

O

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

10

G

Ground

DIR

11

O

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

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

VDD

12

P

Positive supply voltage