STUSB4700

Inputs/outputs

DocID030193 Rev 2

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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

USB Type-C cable. CC1/CC2 are HiZ during reset.

2.3.2

RESET

Active high reset. This pin resets all analog signals, states machine and reloads

configuration.

2.3.3

I2C interface pins

Table 4: I2C interface pins list

Name

Description

SCL

I²C clock

– need external pull-up

SDA

I²C data

– need external pull-up

ALERT#

I²C interrupt

– need external pull-up

2.3.4

A_B_SIDE

This output pin provides cable orientation. It is used to establish USB SuperSpeed signals

required in case of USB 2.0 support or in case of supply only.

Table 5: USB Data mux select

Value

CC pin position

HiZ

CC pin detected on CC1 (A5)

0

CC pin detected on CC2 (B5)

2.3.5

VBUS_SENSE

USB Type-C receptacle side.

2.3.6

VBUS_EN_SRC

output allows to drive directly a PMOS transistor. The logic value of the pin is also

2.3.7

and can be connected directly to a single cell Lithium battery or a system power supply

delivering 3.3 V or 5 V. If not used, it is recommended to connect to GND.

2.3.8