FUSB302MPX. datasheet(4/35 Pages) ONSEMI

4 / 35 page

www.fairchildsemi.com

FUSB302

• Rev. 2

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Pin Descriptions

Name

Type

Description

USB Type-C Connector Interface

CC1/CC2

I/O

Type-C connector Configuration Channel (CC) pins. Initially used to determine

when an attach has occurred and what the orientation of the insertion is.

Functionality after attach depends on mode of operation detected.

Operating as a host:

Sets the allowable charging current for VBUS to be sensed by the attached

device

Used to communicate with devices using USB BMC Power Delivery

Used to detect when a detach has occurred

Operating as a device:

Indicates what the allowable sink current is from the attached host. -Used to

communicate with devices using USB BMC Power Delivery

GND

Ground

VBUS

Input

VBUS input pin for attach and detach detection when operating as an upstream

facing port (Device). Expected to be an OVP protected input.

Power Interface

VDD

Power

Input supply voltage.

VCONN

Power Switch

Regulated input to be switched to correct CC pin as VCONN to power USB3.1 full-

featured cables and other accessories

Signal Interface

SCL

Input

I2C serial clock signal to be connected to the phone-based I2C master.

SDA

Open-Drain

I/O

I2C serial data signal to be connected to the phone-based I2C master

INT_N

Open-Drain

Output

Active LOW open drain interrupt output used to prompt the processor to read the

I2C register bits

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