TDA7430 STMicroelectronics, TDA7430 Datasheet - Page 11

• Manufacturer Part Number: TDA7430
• Description: IC PROCESSOR AUDIO DGTL 44-TQFP
• Manufacturer: STMicroelectronics
• Type: Audio Processorr

Specifications of TDA7430

• Applications: Automotive Systems
• Mounting Type: Surface Mount
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5
5.1 No Incremental Bus
The TDA7430/TDA7431 receives a start condition, the correct chip address, a subaddress with the MSB = 0 (no
incremental bus), N-datas (all these datas concern the subaddress selected), a stop condition.
Figure 12.
5.2 Incremental Bus
The TDA7430/TDA7431 receives a start condition, the correct chip address, a subaddress with the MSB = 1
(incremental bus): now it is in a loop condition with an autoincrease of the subaddress whereas SUBADDRESS
from "1XXX1010" to "1XXX1111" of DATA are ignored.The DATA 1 concern thesubaddress sent, and the DATA
2 concern the subaddress sent plus one in the loop etc, and at the end it receivers the stop condition.
Figure 13.
6
Address = 80(HEX) ADDR open; 82 (HEX): need to connect supply
6.1 Function Selection
Table 6. The first byte (Subaddress)
B = 1 incremental bus; active
B = 0 no incremental bus;
X = indifferent 0,1
MSB
S
D7
S
B
B
B
B
B
B
B
B
B
B
MSB
MSB
EXAMPLES
DATA BYTES
1
1
0
0
CHIP ADDRESS
D95AU306
D6
CHIP ADDRESS
D95AU307
X
X
X
X
X
X
X
X
X
X
0
0
0
0
0
D5
0
X
X
X
X
X
X
X
X
X
X
0
0
A
A
D4
LSB
LSB
X
X
X
X
X
X
X
X
X
X
0
0
ACK
ACK
D3
0
0
0
0
0
0
0
0
1
1
MSB
MSB
0
1
X
X
D2
SUBADDRESS
SUBADDRESS
0
0
0
0
1
1
1
1
0
0
X
X
X
X
D3
D3
D1
0
0
1
1
0
0
1
1
0
0
D2 D1 D0
D2 D1 D0
LSB
D0
LSB
LSB
0
1
0
1
0
1
0
1
0
1
ACK
ACK
INPUT ATTENUATION
SURROUND & OUT & EFFECT CONTROL
PHASE RESISTOR
BASS & NATURAL BASE
MIDDLE & TREBLE
SPEAKER ATTENUATION "L"
SPEAKER ATTENUATION "R"
AUX ATTENUATION "L"
AUX ATTENUATION"R"
INPUT MULTIPLEXER, & AUX OUT
MSB
MSB
DATA 1 to DATA n
SUBADDRESS
DATA
DATA
DATA
TDA7430 - TDA7431
LSB
LSB
ACK
ACK
11/23
P
P