TDA7403D STMicroelectronics, TDA7403D Datasheet - Page 17

• Manufacturer Part Number: TDA7403D
• Description: IC PROCESSOR BASIC SIGNAL SO-20
• Manufacturer: STMicroelectronics
• Type: Car Signal Processorr

Specifications of TDA7403D

• Applications: Automotive Systems
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

I
Interface Protocol
The interface protocol comprises:
-a start condition (S)
-a chip address byte (the LSB bit determines read
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)
T = Testmode
I = Autoincrement
AZ = Auto Zero Remain
X = not used
2
MSB
C BUS INTERFACE DESCRIPTION
S
X
MSB
1
0
AZ
CHIP ADDRESS
D97AU627
0
0
1
T
1
0 R/W ACK
I
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
/ write transmission)
-a subaddress byte
-a sequence of data (N-bytes + acknowledge)
-a stop condition (P)
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
A0
MSB
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
X
LSB
Not allowed
Auto-Zero
Volume
Softmute
Bass / Treble Attenuator
Bass / Treble Configuration
Speaker attenuator LF
Speaker attenuator LR
Speaker attenuator RF
Speaker attenuator RR / Blanktime adjust
Stereodecoder
Noiseblanker
Fieldstrength Control
Configuration
Stereodecoder Adjustment
Testing
ACK
X
MSB
X
DATA 1 to DATA n
X
FUNCTION
DATA
ST
SM
LSB
TDA7403
X
ACK
LSB
17/25
X
P