MOSA

MS6864

Dual 2W Power Amplifiers with Volume Control

REV 2

9/21

www.mosanalog.com

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Data are transmitted to and from the MCU and MS6864 via the SDA and SCL. The SDA and SCL make up the

BUS interface. It should be noted that pull-up resistors must be connected to the positive supply voltage.

SDA (Serial Data Line)

Rp

Rp

SCL (Serial Clock Line)

Pull up resistors

V

DD

MCU

MS6864

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The format consists of the following:

•A START condition

•A chip address byte including the chip address. (7bits)

•The 8

•The chip must always acknowledge the end of each transmitted byte.

•A data sequence (N-bytes + Acknowledge)

•A STOP condition

SCL

SDA

1-7

8

9

1-7

8

9

9

8

1-7

S

P

ADDRESS

R / W

ACK

ACK

ACK

DATA

DATA

START

CONDITION

STOP

CONDITION

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88H

1

0

0

0

0

0

1

0

7 bits address

W