STUSB1600 datasheet(9/69 Pages) STMICROELECTRONICS

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STUSB1600

Inputs/outputs

2.3

Pin description

2.3.1

CC1/CC2

CC1 and CC2 are the configuration channel pins used for connection and attachment

detection, plug orientation determination, and system configuration management across the

USB Type-C cable.

2.3.2

CC1DB/CC2DB

CC1DB and CC2DB are used for dead battery mode when the STUSB1600 is configured in

sink power role or dual power role. This mode is enabled by connecting CC1DB and CC2DB

respectively to CC1 and CC2. Thanks to this connection, the pull down terminations on the

CC pins are present by default even if the device is not supplied (see Section 3.5: Dead

battery mode).

Warning:

CC1DB and CC2DB must be connected to ground when the

STUSB1600 is configured in source power role or when dead

battery mode is not supported.

2.3.3

VCONN

This power input is connected to a power source that can be a 5 V power supply or a lithium

battery. It is used to provide power to the local plug. It is internally connected to power

switches that are protected against short circuit and overvoltage. This does not require any

protection on the input side. When a valid source-to-sink connection is determined and the

VCONN power switches are enabled, VCONN is provided by the source to the unused CC pin

(see Section 3.3: VCONN supply).

Table 3. Pin function descriptions

Type

Description

DDigital

Analog

Output pad

Input pad

Bidirectional pad

Open drain output

Pull-down

Pull-up

High voltage

PWR

Power

GND

Ground

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