參數(shù)資料
型號(hào)： TDA7419
廠商： STMICROELECTRONICS
元件分類(lèi)： 音頻控制
英文描述： 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28
封裝： SO-28
文件頁(yè)數(shù)： 22/40頁(yè)
文件大小： 698K
代理商： TDA7419
TDA7419
I2C bus specification
5
I2C bus specification
5.1
Interface protocol
The interface protocol comprises:
●
a start condition (S)
●
a chip address byte (the LSB determines read/write transmission)
●
a subaddress byte
●
a sequence of data (N-bytes + acknowledge)
●
a stop condition (P)
●
the max. clock speed is 500 kbits/s
●
3.3 V logic compatible
5.1.1
Receive mode
S = Start
R/W =
"0" -> Receive Mode (Chip can be programmed by
μP)
"1" -> Transmission Mode (Data could be received by
μP)
ACK = Acknowledge
P = Stop
TS = Testing mode
AZ = AutoZero remain
AI = Auto increment
5.1.2
Transmission mode
SM = Soft-mute activated for main channel
X = Not Used
The transmitted data is automatic updated after each ACK. Transmission can be repeated
without new chip address.
5.1.3
Reset condition
A Power on reset is invoked if the supply voltage is below than 3.5 V. After that the following
data is written automatically into the registers of all subaddresses:
S 1
0
0 0 1
0
0 R/W ACK
TS
AZ AI A4 A3 A2 A1 A0 ACK DATA ACK P
S
1
0
1
0
R/W
ACK
X
XX
SM
ACK
P
MSB
LSB
11
111
11
0
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