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2014-04-0004

PT0502-1

04/28/14

6

PI3USB9281

USB 2.0 Port Protection with Charger Detection

Register Map (Continuously.)

Note: Register address 04H, 06H, 07H, 08H, 09H, 0BH, 0CH, 0DH, 0FH, 10H, 11H, 12H, 14H, 15H, 16H, 17H, 18H, 19H, 1AH,

1CH, 1EH, 1FH, 20H and 21H are reserved

Address Register Type

Reset

Value

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

0AH

Device

Type

Read

00000000

Reserved

USB

Charging

(DCP)

USB

Charging

(CDP)

Car Kit

Charger

Reserved

USB Data

(SDP)

OTG

MHL

0: No Detect

Reserved

1: USB

dedicated

charging port

(DCP)

detected

1: USB

charging

downstream

port (CDP)

detected

1: USB

Car Kit

Charger

detected

Reserved

1: USB

standard

downstream

port (SDP)

detected

1: USB OTG or

Unidentified

Devices detected

1: MHL

detected

0EH

Charger

Status

Read

00000000

Reserved:

-Read xxx

-Write 000

Apple Charger Type

Charger Type

0: No Detect

00: No connection

1: 2.4A

Apple

charger

detected

1: 2A

Apple

charger

detected

1: 1A

Apple

charger

detected

01: Reserved Charger

10: Car Kit charger type1

11: Car Kit charger Type 2

13H

Manual

Switch

Read/

Write

00000000

D- Connection

D+ Connection

000: Open D- switch

001: D- connected to DNH of USB port

000: Open D+ switch

001: D+ connected to DPH of USB port

00: Open VBUS switch

1BH

Reset

Read/

Write

x0001000

Reserved: -Read xxxxxxx, -Write 0000000

Reset

0: No Reset

1: Reset

(Always

reads 0)

1DH

VBUS

Read

00000000

Reserved: -Read xxxxxx, -Write 000000

Reserved:

-Read x,

-Write 0

Valid