9

Multimedia ICs

BH7634AS

S

1

D9 D8 D7 D6 D5 D4 D3 D2

D1 D0

000000

0000010

MSB

MSB

S

SLAVE ADDRESS

:

:

A

DATA1 , 2

:

:

LSB

MSB

LSB

LSB

SLAVE ADDRESS A

DATA1

A

DATA2

A

P

I

Start condition

Slave address

Confirmation response clock pulse

Data byte

1st byte

2nd byte

D9

SELECT

H

L

A

B

SW1

D8

SELECT

H

L

A

HA

LB

C

D7

H

L

H

L

SW2

D6

SELECT

H

L

A

HA

LB

C

D5

H

L

H

L

SW3

D4

FSC OUT

H

L

LOW

H

MIDDLE

L

HIGH

HIGH

D3

H

L

H

L

FSCOUT control

D1

AUX CTL1 OUT

H

L

HIGH

LOW

External control 1

D0

AUX CTL2 OUT

H

L

HIGH

LOW

External control 2

D2

MUTE

H

L

MUTE

NORMAL

MUTE control

Note: When D2 is HIGH, only the audio switches are

muted.