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TDA7343 数据表(PDF) 7 Page - STMicroelectronics

部件名 TDA7343
功能描述  DIGITALLY CONTROLLED AUDIO PROCESSOR
Download  14 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7343 数据表(HTML) 7 Page - STMicroelectronics

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background image
MSB
LSB
FUNCTION
X
X
X
I
A3A2
A1A0
0
0
0
0
Input Selector
0
0
0
1
Loudness
0
0
1
0
Volume
0
0
1
1
Bass, Treble
0
1
0
0
Speaker Attenuator LF
0
1
0
1
Speaker Attenuator LR
0
1
1
0
Speaker Attenuator RF
0
1
1
1
Speaker Attenuator RR
1
0
0
0
Mute
AUTO INCREMENT
If bit I in the subaddress byte is set to ”1”, the autoincrement of the subaddress is enabled
SUBADDRESS (receive mode)
CHIP ADDRESS
SUBADDRESS
DATA 1 to DATA n
MSB
LSB
MSB
LSB
MSB
LSB
S
1000100
R/W ACK X
X
X
I
A3 A2 A1 A0 ACK
DATA
ACK
P
ACK = Acknowledge
S = Start
P = Stop
I = Auto Increment
X = Not used
MAX CLOCK SPEED 500kbits/s
TRANSMITTED DATA
Send Mode
MSB
LSB
X
X
X
X
X
SM
ZM
X
ZM = Zero crossing muted (HIGH active)
SM = Soft mute activated (HIGH active)
X = Not used
The transmitted data is automatically updated after each ACK.
Transmission can be repeated without new chip address.
SOFTWARE SPECIFICATION
Interface Protocol
The interface protocol comprises:
A start condition (s)
A chip address byte,(the LSB bit determines
read/write transmission)
A subaddress byte.
A sequence of data (N-bytes + acknowledge)
A stop condition (P)
TDA7343
7/14


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