VBUS

Rp (56k ±5%)

CC

CC

TUSB322

Legacy Host Adapter

Rd (5.1k ± 10%)

900KΩ ±1%

VBUS_DET

To System VBUS detection

Copyright © 2016, Texas Instruments Incorporated

9

TUSB322I

www.ti.com

SLLSEO5C – OCTOBER 2015 – REVISED MAY 2017

Product Folder Links: TUSB322I

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Copyright © 2015–2017, Texas Instruments Incorporated

Feature Description (continued)

7.3.1.1 USB Type-C Receptacles and Plugs

Below is list of Type-C receptacles and plugs supported by the TUSB322I device:

•

USB Type-C receptacle for USB2.0 and USB3.1 and full-featured platforms and devices

•

USB full-featured Type-C plug

•

USB2.0 Type-C plug

7.3.1.2 USB Type-C Cables

Below is a list of Type-C cables types supported by the TUSB322I device:

•

USB full-featured Type-C cable with USB3.1 full-featured plug

•

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

•

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

7.3.1.3 Legacy Cables and Adapters

The TUSB322I device supports legacy cable adapters as defined by the Type-C Specification. The cable adapter

must correspond to the mode configuration of the TUSB322I device.

Figure 2. Legacy Adapter Implementation Circuit

7.3.1.4 Direct Connect Devices

The TUSB322I device supports the attaching and detaching of a direct-connect device.

7.3.1.5 Audio Adapters

Additionally, the TUSB322I device supports audio adapters for audio accessory mode, including:

•

Passive Audio Adapter

•

Charge Through Audio Adapter

7.3.2 Port Role Configuration

The TUSB322I default operation is dual-role port (DRP). The TUSB322I will always default to DRP operation

anytime EN_N is asserted from high to low or I2C_SOFT_RESET bit is set. But the TUSB322I can be configured

as DFP-only or UFP-only through changing the default state of the MODE_SELECT register. DFP-only and UFP-

only mode is not available in GPIO mode. Table 1 lists the supported features in each mode: