Contents

STUSB4700

2/32

DocID030193 Rev 2

Contents

1

Functional description .................................................................... 4

2

Inputs/outputs ................................................................................. 5

2.1

Pinout................................................................................................ 5

2.2

Pin list ............................................................................................... 5

2.3

Pin description................................................................................... 7

2.3.1

CC1 / CC2 .......................................................................................... 7

2.3.2

RESET................................................................................................ 7

2.3.3

I2C interface pins................................................................................ 7

2.3.4

A_B_SIDE .......................................................................................... 7

2.3.5

VBUS_SENSE.................................................................................... 7

2.3.6

VBUS_EN_SRC ................................................................................. 7

2.3.7

VSYS..................................................................................................... 7

2.3.8

VDD ...................................................................................................... 7

2.3.9

GND.................................................................................................... 8

2.3.10

VVAR_ADDR0.................................................................................... 8

2.3.11

GPIO [4:0]........................................................................................... 8

2.3.12

VREG2V7 ........................................................................................... 8

2.3.13

VREG1V2 ........................................................................................... 8

2.3.14

VBUS_DISCH..................................................................................... 8

2.3.15

VCONN .................................................................................................. 8

3

Block descriptions ........................................................................ 10

3.1

CC interface .................................................................................... 10

3.2

BMC ................................................................................................ 10

3.3

Protocol layer .................................................................................. 10

3.4

Policy engine................................................................................... 10

3.5

Device policy manager .................................................................... 11

3.6

VBUS power path control .................................................................. 11

3.6.1

VBUS monitoring................................................................................. 11

3.6.2

VBUS discharge .................................................................................. 11

3.6.3

VBUS power path assertion ................................................................ 12

3.7

High voltage protection ................................................................... 12

3.8

Hardware fault management ........................................................... 12

3.9

Accessory mode detection .............................................................. 13

3.9.1

Audio accessory mode detection ..................................................... 13

3.9.2

Debug accessory mode detection .................................................... 13