FSA9280A Ver la hoja de datos (PDF) - Fairchild Semiconductor

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Fabricante

FSA9280A

USB Port Multimedia Switch Featuring Automatic Select and Accessory Detection

Fairchild Semiconductor 

Address Register

0AH

Device

Type 1

0BH

Device

Type 2

Type

Read

Read

Reset Value

00000000

00000000

Bit 7

Bit 6

Bit 5

Bit 4

USB Charging USB Charging

(DCP)

(CDP)

Car Kit Charger

Reserved:

- Read X

- Write 0

0: No detect

1: USB

dedicated

charging port

(DCP) detected

1: USB charging

downstream port

(CDP) detected

1: Car Kit charger

detected

Reserved:

- Read XX

- Write 00

TTY

0: No detect

1: TTY detected

Reserved:

- Read X

- Write 0

Button 7

Button 6

Button 5

Button 4

Bit 3

UART

1: UART detected

1: Jig: UART –

Boot_OFF

Button 3

Bit 2

Bit 1

USB Data (SDP)

1: USB standard

downstream port

(SDP) detected

Reserved:

- Read X

- Write 0

Factory Mode – See Table 9

Bit 0

Audio Type

1

0: No detect

1: Audio

Type 1

accessory

detected

0: No detect

1: Jig: UART –

Boot_ON

1: Jig: USB – Boot_OFF

Button 2

Button 1

1: Jig: USB –

Boot_ON

Send End

0CH Button 1 Read 00000000

0: Not Pressed

1: Pressed

0DH Button 2 Read 00000000

0EH

Car Kit

Status

Read 00000000

0FH Reserved N/A 00000000

Reserved:

- Read XX

- Write 00

Key Press Error

0: No Key Press

Error

1: Key Press

Error detected

(too short)

Button 12

Reserved:

- Read XXXXXX

- Write 000000

Button 11

Button 10

0: Not Pressed

1: Pressed

Reserved: - Read XXXXXXXX, - Write 00000000

Button 9

Button 8

Charger Type

00: No connection

01: Reserved Charger

10: Car Kit charger type 1

11: Car Kit charger type 2

10H Reserved N/A 00000000

Reserved: - Read XXXXXXXX, - Write 00000000

11H Reserved N/A 00000000

Reserved: - Read XXXXXXXX, - Write 00000000

12H Reserved N/A 00000000

Reserved: - Read XXXXXXXX, - Write 00000000

DM_CON Connection

DP_CON Connection

VBUS Connection

13H

Manual

Switch 1

Read /

Write

00000000

000: Open DM_CON switch

001: DM_CON connected to DM_HOST of USB

port

010: DM_CON connected to Audio_L

011: DM_CON connected to TxD of UART port

000: Open DP_CON switch

001: DP_CON connected to DP_HOST of USB port

010: DP_CON connected to Audio_R

011: DP_CON connected to RxD of UART port

00: Open VBUS switch

01: VBUS_OUT connected to VBUS_IN

(Host – current sourced from the phone

to accessory, max. load current is 5mA)

10: VBUS_IN connected to MIC

11: VBUS_IN connected to VBUS_OUT

(Standard USB – phone sinks current

from attached accessory)

14H

Manual

Switch 2

Read /

Write

00000000

Reserved:

- Read XXX

- Write 000

CHG_DET

0: High Impedance

1: Low

BOOT

0: Low

1: High

JIG

0: High Impedance

1: Low

Reserved:

- Read XXX

- Write 000

Continued on the following page…

© 2009 Fairchild Semiconductor Corporation

FSA9280A • Rev 1.1.0

21

www.fairchildsemi.com

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