MS6266(REV2) 데이터 시트보기 (PDF) - MOSA ELECTRONICS

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MS6266
(Rev.:REV2)

6-Channel Volume Controller Gain and Attenuation 16~-79dB Low Voltage, High Channel Separation

MOSA ELECTRONICS 

MOSA

MS6266

6-Channel Electronic Volume Controller

BUS INTERFACE

Data are transmitted to and from the MCU to the MS6266 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)

VDD

Rp

Rp Pull up resistors

SCL (Serial Clock Line)

MCU

MS6266

Interface protocol

The format consists of the following

‧A START condition

‧A chip address byte including the MS6266 address. (7bits)

‧The 8th bit of the byte must be “0”.(write=0, read=1)

‧MS6266 must always acknowledge the end of each transmitted byte.

‧A data sequence (N-bytes + Acknowledge)

‧A STOP condition

SDA

SCL

S

START

CONDITION

1-7

ADDRESS

8

R / W--

9

ACK

1-7

8

9

DATA

ACK

1-7

8

DATA

9

ACK

P

STOP

CONDITION

Address code

The MS6266 has four address codes, they were selected by AC1(pin17)and AC2(pin4).

AC1

AC2

Address code

0

0

80H

0

1

84H

1

0

88H

1

1

8CH

0: connected to GND, 1: connected to VDD

AC1=1, AC2=0

10001000

7 bits address

W

MS6266 address

REV 2

7/13

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