MS6258U 데이터 시트보기 (PDF) - MOSA ELECTRONICS

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MS6258U

Gain and Attenuation Volume Controller IC 4 Sets of Stereo Input, Low voltage Gain and Attenuation 15~-79dB

MOSA ELECTRONICS 

MOSA

MS6258

Gain And Attenuation Volume Controller IC

BUS INTERFACE

Data are transmitted to and from the MCU to the MS6258 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.

VDD

SDA (Serial Data Line)

Rp

Rp Pull up resistors

SCL (Serial Clock Line)

MCU

MS6258

Interface protocol

The format consists of the following

‧A START condition

‧A chip address byte including the MS6258 address. (7bits)

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

‧MS6258 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

Protocol Address

Pin1(A.O.) = Low or Open

10001000

7 bits address

W

MS6258 address

Pin1(A.O.) = High

10001100

7 bits address

W

MS6258 address

REV 1

7

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