參數(shù)資料
型號(hào)： TDA7406T
廠商： 意法半導(dǎo)體
英文描述： CAR RADIO SIGNAL PROCESSOR
中文描述： 汽車無線電信號(hào)處理器
文件頁數(shù)： 34/49頁
文件大?。?/td> 823K
代理商： TDA7406T
TDA7406T
34/49
9
I2C BUS INTERFACE
9.1 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)
S = Start
R/W = “0” -> Receive-Mode (Chip could be programmed by μP)
“1” -> Transmission-Mode (Data could be received by μP)
ACK = Acknowledge
P = Stop
MAX CLOCK SPEED 500kbits/s
9.1.1 Auto increment
If bit I in the subaddress byte is set to “1”, the auto increment of the subaddress is enabled.
9.1.2 TRANSMITTED DATA (send mode)
SM = Soft mute activated
ST = Stereo
P = Pause
X = Not Used
The transmitted data is automatically updated after each ACK.
Transmission can be repeated without new chip address.
9.1.3 Reset Condition
A Power-On-Reset is invoked if the Supply-Voltage is below than 3.5V. After that, the following data is written
automatically into the registers of all subaddresses:
The programming after POR is marked bold-face / underlined in the programming tables.
With this programming all the outputs are muted to V
REF
(V
OUT
= V
DD
/2).
CHIP ADDRESS
SUBADDRESS
DATA 1...DATA n
MSB
LSB
MSB
T
LSB
A
MSB
LSB
S 1 0 0 0 1 1 0 R/W ACK
AZ
I
A
A
A
A
ACK
DATA
ACK
P
MSB
LSB
X
X
X
X
X
P
ST
SM
MSB
LSB
1
1
1
1
1
1
1
0
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