VBUS

Rp (56k ± 5%)

CC

CC

TUSB320

Legacy Host Adapter

Rd (5.1k ± 10%)

900 k

± 1%

VBUS_DET

To System VBUS detection

Copyright © 2016, Texas Instruments Incorporated

9

TUSB320LAI, TUSB320HAI

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SLLSEQ8D – OCTOBER 2015 – REVISED MAY 2017

Product Folder Links: TUSB320LAI TUSB320HAI

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Copyright © 2015–2017, Texas Instruments Incorporated

Overview (continued)

•

USB full-featured Type-C plug

•

USB2.0 Type-C plug

7.1.1.2 USB Type-C Cables

Below is a list of Type-C cables types supported by the TUSB320 devices:

•

USB full-featured Type-C cable

•

USB2.0 Type-C cable with USB2.0 plug

•

Captive cable on remote device with either a USB full-featured plug or USB2.0 plug

7.1.1.3 Legacy Cables and Adapters

The TUSB320 devices support legacy cable adapters as defined by the Type-C specification. The cable adapter

must correspond to the mode configuration of a TUSB320 device.

Figure 3 displays the TUSB320 Legacy Adapter Implementation Circuit.

Figure 3. Legacy Adapter Implementation Circuit

7.1.1.4 Direct Connect Devices

The TUSB320 devices support the attaching and detaching of a direct-connect device.

7.1.1.5 Audio Adapters

Additionally, the TUSB320 devices support audio adapters for audio accessory mode, including:

•

Passive Audio Adapter

•

Charge Through Audio Adapter

7.2 Feature Description

7.2.1 Port Role Configuration

The TUSB320 devices can be configured as a downstream facing port (DFP), upstream facing port (UFP), or

dual-role port (DRP) using the tri-level PORT pin. The PORT pin should be pulled high to VDD using a pullup

resistance, low to GND or left as floated on the PCB to achieve the desired mode. This flexibility allows a

TUSB320 device to be used in a variety of applications. A TUSB320 device samples the PORT pin after reset

and maintains the desired mode until the TUSB320 device is reset again. The port role can also be selected

through I2C registers. Table 1 lists the supported features in each mode: