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參數(shù)資料
| 型號： | TDA7342 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PQFP32 |
| 封裝： | TQFP-32 |
| 文件頁數(shù)： | 13/14頁 |
| 文件大?。?/td> | 316K |
| 代理商： | TDA7342 |
MSB
LSB
FUNCTION
X
I
A3
A2
A1
A0
0
Input Selector
0
1
Loudness
00
10
Volume
0
1
Bass, Treble
0
1
0
Speaker Attenuator LF
0
1
0
1
Speaker Attenuator LR
0
1
0
Speaker Attenuator RF
0
1
Speaker Attenuator RR
10
00
Mute
AUTO INCREMENT
If bit I in the subaddress byte is set to "1", the autoincrement of the subaddress is enabled
SUBADDRESS (receive mode)
TRANSMITTED DATA
Send Mode
MSB
LSB
XXXXX
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 chipaddress.
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)
CHIP ADDRESS
SUBADDRESS
DATA 1 to DATA n
MSB
LSB
MSB
LSB
MSB
LSB
S
1000100 R/W ACK X
X
I
A3A2 A1A0 ACK
DATA
ACK
P
ACK = Acknowledge
S = Start
P = Stop
I = Auto Increment
X = Not used
MAX CLOCK SPEED 500kbits/s
TDA7342
8/14
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