LA73024AV

No.A0238-9/12

Serial Control Specification

Slave address

MSB

LSB

1

0

0

1

0

0

0

0

↑

Slave receiver

Data format

S

Slave address (8bit)

A

Sub address (8bit)

A

Data address (8bit)

A

P

↑

↑

↑

Start condition

Acknowledge

Stop condition

Sub address and data byte table

Data byte (Underline is initial setting.)

Sub address

Hexadecimal

D8

D7

D6

D5

D4

D3

D2

D1

01

(0000 0001)

SW1

00: C

01: B

10: A

11: A

SW2

00: D

01: C

10: B

11: A

SW3

00: C

01: B

10: A

11: *

FSSOUT

00: HIGH

01: HIGH

10: MID

11: LOW

02

(0000 0010)

EXT

CTL1

0: L

1: H

EXT

CTL2

0: L

1: H

AMP GAIN

VPS OUT

0: 0dB

1: 6dB

AUDIO AMP GAIN1

(DEC OUT)

000: 0dB

001: 2dB

010: 4dB

011: 6dB

100:12dB

AUDIO AMP GAIN2

(EXT OUT)

00: 0dB

01: 2dB

10: 4dB

11: 6dB

03

(0000 0011)

MUTE1

VSW1 OUT

0: through

1: MUTE

MUTE2

VSW2 OUT

0: through

1: MUTE

MUTE3

VSW3 OUT

0: through

1: MUTE

MUTE4

ASW1 OUT

0: through

1: MUTE

MUTE5

ASW2 OUT

0: through

1: MUTE

MUTE6

ASW3 OUT

0: through

1: MUTE

EXT

CTL3

0: L

1: H

EXT

CTL4

0: L

1: H

Data transfer

I

first, please set up the START condition

which should be synchronized with SCL into SDA terminal. Still more, please give priority to high rank bit at data

transfer order (MSB

→ LSB). The 9th bit is called as ACK (Acknowledge), SW IC sends [0] to the SDA terminal

during SCL [1] period. So, please open the port of micro-processor during this period. LA73024AV adopt

auto-increment, so you input only first sub-address data (called as Group) and you can transfer data in order. As thus

the Data transfer Stop condition