A1

A12

B12

B1

A2

A3

A4

A5

A11

A6

A7

A8

A9

A10

B2

B3

B4

B5

B6

B7

B8

B9

B10

B11

VBUS

DP

DM

CC1

CC2

TUSB321AI

CC2

CC1

VBUS_DET

USB VBUS Switch

VOUT

VIN

150uF

PORT

100nF

VDD_5V

200K

VCONN_FAULT#

CURRENT_MODE

ID

10K

200K

VCC_3.3V

EN

FAULT#

DM

DP

PS_EN

PS_FAULT#

ID

FAULT#

OEN

A0P

A0N

A1P

A1N

B0P

B0N

B1P

B1N

C0P

C0N

C1P

C1N

SEL

TXN1

TXP1

RXN1

RXP1

TXP2

TXN2

RXP2

RXN2

TXN1

TXP1

RXN1

RXP1

TXP2

TXN2

RXP2

RXN2

SSTXP

SSTXN

SSRXP

SSRXN

VCC_3.3V

10K

VCC_3.3V

100nF

100nF

100nF

100nF

4.7K

100uF

USB3 Host and

PMIC

System VBUS

900K

TUSB321AI

SLLSER2 – OCTOBER 2015

www.ti.com

8 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

8.1 Application Information

The TUSB321AI device is a Type-C configuration channel logic and port controller. The TUSB321AI device can

detect when a Type-C device is attached, what type of device is attached, the orientation of the cable, and power

capabilities (both detection and broadcast). The TUSB321AI device can be used in a source application (DFP) or

in a sink application (UFP).

8.2 Typical Application

8.2.1 DFP Mode

Figure 3 shows the TUSB321AI device configured as a DFP.

Figure 3. DFP Mode Schematic

12

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