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

TUSB320LAI, TUSB320HAI

SLLSEQ8D – OCTOBER 2015 – REVISED MAY 2017

www.ti.com

Product Folder Links: TUSB320LAI TUSB320HAI

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Copyright © 2015–2017, 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 required to determine the connector orientation.

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

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

implemented over the CC pins according to the USB Type-C pecification. The TUSB320 devices provide

Configuration Channel (CC) logic for determining USB port attach and detach, role detection, cable orientation,

and Type-C current mode. The TUSB320 devices also contains several features such as mode configuration and

low standby current which make these devices 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 defines several cables, plugs, and receptacles to be used to attach ports. The TUSB320

devices support all cables, receptacles, and plugs. The TUSB320 devices do not support any USB Type-C

feature which requires USB power delivery communication over CC lines like e-marking or alternate mode.

7.1.1.1 USB Type-C Receptacles and Plugs

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

•

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