參數(shù)資料
型號: TDA7348D
廠商: STMICROELECTRONICS
元件分類: 音頻控制
英文描述: 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28
封裝: SOP-28
文件頁數(shù): 4/20頁
文件大?。?/td> 218K
代理商: TDA7348D
Software specification
TDA7348
4
Software specification
4.1
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)
ACK = Acknowledge
S = Start
P = Stop
I = Auto Increment
X = Not used
Max clock speed 500kbits/s
4.2
Auto increment
If bit I in the subaddress byte is set to "1", the auto-increment of the subaddress is enabled
Chip address
Subaddress
Data 1 to data n
MSB
LSB
MSB
LSB
MSB
LSB
S
1
000100 R/W ACK
X
X X
I A3 A2 A1 A0 ACK
DATA
ACK P
Table 5.
Subaddress (receive mode)
MSB
LSB
Function
X
I
A3
A2
A1
A0
0
Input selector
0
1
Loudness
0
1
0
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
1
0
Mute
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