7.2.1.2 USB Type-C Cables

Below is a list of Type-C cable types supported by the TUSB320 device:

• USB full-featured Type-C cable

• USB 2.0 Type-C cable with USB 2.0 plug

• Captive cable with either a USB full-featured plug or USB 2.0 plug

7.2.1.3 Legacy Cables and Adapters

The TUSB320 device supports legacy cable adapters as defined by the Type-C specification. The cable adapter

must correspond to the mode configuration of the TUSB320 device.

VBUS

Rp (56k ± 5%)

CC

CC

TUSB320

Legacy Host Adapter

Rd (5.1k ± 10%)

900 kΩ ± 1%

VBUS_DET

To System VBUS detection

Copyright © 2016, Texas Instruments Incorporated

Figure 7-2. Legacy Adapter Implementation Circuit

7.2.1.4 Direct Connect Devices

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

7.2.1.5 Audio Adapters

Additionally, the TUSB320 device supports audio adapters for audio accessory mode, including:

• Passive audio adapter

• Charge through audio adapter

7.3 Feature Description

7.3.1 Port Role Configuration

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

dualrole 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 the

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

and maintains the desired mode until the TUSB320 device is reset again. Table 7-1 lists the supported features

in each mode.

TUSB320, TUSB320I

SLLSEN9F – MAY 2015 – REVISED MARCH 2022

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Product Folder Links: TUSB320 TUSB320I