參數(shù)資料
型號: TDA7411
廠商: STMICROELECTRONICS
元件分類: 音頻控制
英文描述: 2 CHANNEL(S), TONE CONTROL CIRCUIT, PQFP44
封裝: 10 X 10 MM, 1.40 MM HEIGHT, TQFP-44
文件頁數(shù): 24/43頁
文件大?。?/td> 617K
代理商: TDA7411
Obsolete
Product(s)
- Obsolete
Product(s)
TDA7411
30/43
I2C BUS INTERFACE DESCRIPTION
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)
S = Start
ACK = Acknowledge
AZ = AutoZero-Remain
T = Testing
I = Autoincrement
P = Stop
MAX CLOCK SPEED 500kbits/s
Auto increment
If bit I in the subaddress byte is set to "1", the autoincrement of the subaddress is enabled.
TRANSMITTED DATA (send mode)
SM = Soft mute activated
ST = Stereo
X = Not Used
The transmitted data is automatically updated after each ACK.
Transmission can be repeated without new chip address.
Reset Condition
A power on reset is invoked if the supply voltage is below than 3.5V. After that the following data are written
automatically into the registers of all sub addresses:
The programming after POR is marked bold face / underlined in the programming tables. With that pro-
gramming all the outputs are muted to Vref.
MSB
LSB
XX
ST
SM
XX
MSB
LSB
11
111110
D03AU1526
S
1
0
1
0 R/W ACK
ACK
P
MSB
LSB
MSB
LSB
MSB
LSB
CHIP ADDRESS
A4
I
SUBADDRESS
DATA 1 to DATA n
AZ T
A3 A2 A1 A0
DATA
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