CC1

CC2

PORT

VBUS_DET

OUT2

OUT1

VDD

DIR

GND

ID

VBUS

Detection

VCONN

Power Rail

Controller

CURRENT_MODE

VCONN_FAULT

CC Logic

for Mode

Configuration

and Detection

Product

Folder

Order

Now

Technical

Documents

Tools &

Software

Support &

Community

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

TUSB321AI

SLLSER2A – OCTOBER 2015 – REVISED MAY 2017

TUSB321AI USB Type-C Configuration Channel Logic and Port Control with VCONN

1

1 Features

1

•

USB Type-C™ Specification 1.1

•

Backward Compatible with USB Type-C

Specification 1.0

•

Supports Up to 3 A of Current Advertisement

through dedicated Current Mode pin

•

Mode Configuration

–

Host Only – DFP (Source)

–

Device Only – UFP (Sink)

–

Dual Role Port – DRP

•

Channel Configuration (CC)

–

Attach of USB Port Detection

–

Cable Orientation Detection

–

Role Detection

–

Type-C Current Mode advertisement and

detection (Default, Medium, High)

•

VBUS Detection

•

VCONN Support for Active Cables

•

Cable Detection and Direction Control

for External Switches

•

Supply Voltage: 4.5 V to 5.5 V

•

Low Current Consumption

•

Industrial Temperature Range of –40 to 85°C

2 Applications

•

Host, Device, Dual Role Port Applications

•

Mobile Phones

•

Tablets and Notebooks

•

USB Peripherals

3 Description

The TUSB321AI device enables USB Type-C ports

with the configuration channel (CC) logic needed for

Type-C ecosystems. The TUSB321AI device uses

the CC pins to determine port attach and detach,

cable orientation, role detection, and port control for

Type-C current mode. The TUSB321AI device can be

configured as a downstream facing port (DFP),

upstream facing port (UFP) or a dual role port (DRP)

making it ideal for any application.

The TUSB321AI device when configured as a DRP

alternates configuration as a DFP or UFP according

to the Type-C Specifications. The CC logic block

monitors the CC1 and CC2 pins for pullup or

pulldown resistances to determine when a USB port

has been attached, the orientation of the cable, and

the role detected. The CC logic detects the Type-C

current mode as default, medium, or high depending

on the role detected. VBUS detection is implemented

to determine a successful attach in UFP and DRP

modes.

The device operates over a wide supply range and

has low-power consumption. The TUSB321AI device

is available in industrial and commercial temperature

ranges.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TUSB321AI

X2QFN (12)

1.60 mm × 1.60 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Schematic

Sample Application