參數(shù)資料
型號: TDA7431
廠商: STMICROELECTRONICS
元件分類: 音頻控制
英文描述: 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP42
封裝: 0.600 INCH, SDIP-42
文件頁數(shù): 2/21頁
文件大?。?/td> 431K
代理商: TDA7431
SOFTWARE SPECIFICATION
Interface Protocol
The interface protocol comprises:
A start condition (S)
A chip address byte, containing the TDA7430
/TDA7431 address
A subaddress bytes
A sequence of data (N byte + achnowledge)
A stop condition (P)
ACK = Achnowledge
S = Start
P = Stop
A = Address
B = Auto Increment
S
1
0
A
0
ACK
DATA
ACK
P
MSB
LSB
MSB
LSB
MSB
LSB
CHIP ADDRESS
D95AU226A
B
DATA
SUBADDRESS
DATA 1 to DATA n
EXAMPLES
No Incremental Bus
The TDA7430 /TDA7431 receives a start condi-
tion, the correct chip address, a subaddress with
the MSB = 0 (no incremental bus), N-datas (all
these datas concern the subaddress selected), a
stop condition.
S
1
0
A
0
ACK
DATA
ACK
P
MSB
LSB
MSB
LSB
MSB
LSB
CHIP ADDRESS
D95AU306
0D3
SUBADDRESS
DATA
XXX
D2 D1 D0
Incremental Bus
The TDA7430 /TDA7431 receive s a start condi-
tion, the correct chip address, a subaddress with
the MSB = 1 (incremental bus): now it is in a loop
condition with an autoincrease of the subaddress
whereas SUBADDRESS from "1XXX1010" to
"1XXX1111" of DATA are ignored.
The DATA 1 concern thesubaddress sent, and
the DATA 2 concern the subaddress sent plus
one in the loop etc, and at the end it receivers the
stop condition.
S
1
0
A
0
ACK
DATA
ACK
P
MSB
LSB
MSB
LSB
MSB
LSB
CHIP ADDRESS
D95AU307
1D3
SUBADDRESS
DATA 1 to DATA n
XXX
D2 D1 D0
TDA7430 - TDA7431
10/21
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