900 K ±1%

CC1

CC2

SDA/OUT1

SCL/OUT2

ADDR

PORT

Connection and

cable detection

CSR

I2C

Digital Controller

3-State Buffer

EN_N

EN_N Logic

CTRL_EN

Open Drain

Output

VBUS Detection

SYS_VBUS

Copyright © 2016, Texas Instruments Incorporated

8

TUSB320, TUSB320I

SLLSEN9C – MAY 2015 – REVISED SEPTEMBER 2016

www.ti.com

Product Folder Links: TUSB320 TUSB320I

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Copyright © 2015–2016, Texas Instruments Incorporated

7 Detailed Description

7.1 Overview

The USB Type-C ecosystem operates around a small form factor connector and cable that is flippable and

reversible. Because of the nature of the connector, a scheme is needed to determine the connector orientation.

Additional schemes are needed to determine when a USB port is attached and the acting role of the USB port

(DFP, UFP, DRP), as well as to communicate Type-C current capabilities. These schemes are implemented over

the CC pins according to the USB Type-C specifications. The TUSB320 device provides Configuration Channel

(CC) logic for determining USB port attach and detach, role detection, cable orientation, and Type-C current

mode. The TUSB320 device also contains several features such as mode configuration and low standby current

which make this device ideal for source or sinks in USB2.0 applications.

Figure 2. Functional Block Diagram of TUSB320

7.1.1 Cables, Adapters, and Direct Connect Devices

Type-C Specification 1.1 defines several cables, plugs and receptacles to be used to attach ports. The TUSB320

device supports all cables, receptacles, and plugs. The TUSB320 device does not support e-marking.

7.1.1.1 USB Type-C Receptacles and Plugs

Below is list of Type-C receptacles and plugs supported by the TUSB320 device:

•

USB Type-C receptacle for USB2.0 platforms and devices

•

USB full-featured Type-C plug

•

USB2.0 Type-C plug