STUSB4700 datasheet(6/32 Pages) STMICROELECTRONICS

6 / 32 page

Inputs/outputs

STUSB4700

6/32

DocID030193 Rev 2

Name

Type

Description

Connection

GPIO0

General purpose I/O #0

VVAR_ADDR0

Analog

Variable voltage output

GPIO2

General purpose I/O #2

GPIO3

General purpose I/O #3

GPIO4

General purpose I/O #4

A_B_SIDE

Cable orientation - active low

open drain

USB SuperSpeed mux

select

– Ext. pull-up

VBUS_SENSE

20 V AI

VBUS voltage monitoring and

discharge path

From VBUS

VBUS_DISCH

Output

External output discharge

path

VBUS_EN_SRC

20 V OD

VBUS source power path

enable

– active low open

drain

To switch or power

system

– Ext. pull-up

VREG_1V2

Analog

1.2 V regulator output

1µF typ decoupling

capacitor

VSYS

Power

System power supply

System low power

(connect to ground if not

used)

VREG_2V7

Analog

2.7 V regulator output

1µF typ decoupling

capacitor

VDD

20 V power

Main power supply (USB

power line)

From VBUS (system side)

Exposed pad

Exposed pad is connected to

ground

To Ground

Table 3: Legend

Type

Description

Digital

Analog

Output pad

Input pad

Bidirectional pad

Open drain output

Pull-down

Pull-up

PWR

Power supply

GND

Ground

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STUSB4700 数据表(PDF) 6 Page - STMicroelectronics

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