TDA7400 ST Microelectronics, TDA7400 Datasheet - Page 20

• Manufacturer Part Number: TDA7400
• Description: ADVANCED CAR SIGNAL PROCESSOR
• Manufacturer: ST Microelectronics

TDA7400
S = Start
ACK = Acknowledge
AZ = AutoZero-Remain
T = Testing
I = Autoincrement
P = Stop
MAX CLOCK SPEED 500kbits/s
The transmitted data is automatically updated af-
ter each ACK. Transmission can be repeated
without new chip address.
SUBADDRESS (receive mode)
20/28
MSB
S
I3
0
1
MSB
1
0
CHIP ADDRESS
D97AU627
I2
0
1
0
0
1
I1
0
1
1
0 R/W ACK
I0
0
1
LSB
A3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
MSB
X
AZ T
A2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
SUBADDRESS
I
A1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
A3 A2 A1 A0
LSB
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 = 1 Soft mute activated
ST = 1 Stereo mode
X = Not Used
A0
MSB
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
X
LSB
AntiRadiation Filter
off
on
AutoZero Remain
off
on
Testmode
off
on
Auto Increment Mode
off
on
Databyte Addressing
Input Selector
Volume
Treble
Bass
Speaker attenuator LF
Speaker attenuator RF
Speaker attenuator LR
Speaker attenuator RR
SoftMute / Bass Prog.
Stereodecoder
Noiseblanker
High Cut Control
Fieldstrength & Quality
Configuration
Stereodecoder Adjustment
Testing
ACK
X
MSB
X
DATA 1 to DATA n
X
FUNCTION
DATA
ST
SM
LSB
X
ACK
LSB
X
P