TDA7449 STMicroelectronics, TDA7449 Datasheet - Page 10

IC AUDIOPROCESSOR DIGITAL 20DIP

TDA7449

Manufacturer Part Number
TDA7449
Description
IC AUDIOPROCESSOR DIGITAL 20DIP
Manufacturer
STMicroelectronics
Type
Audio Processorr
Datasheet

Specifications of TDA7449

Applications
TV
Mounting Type
Through Hole
Package / Case
20-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-3672

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TDA7449
6.2 Incremental Bus
The TDA7449 receive a start conditions, the correct chip address, a subaddress with the B = 1 incremental
bus): now it is in a loop condition with an autoincrease of the subaddress whereas SUBADDRESS from
"XXX1000" to "XXX1111" of DATA are ignored.
The DATA 1 concern the subaddress 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 17.
Table 6. POWER ON RESET CONDITION
7
Address = 88 HEX (ADDR:OPEN).
Table 7. FUNCTION SELECTION: First byte (subaddress)
B = 1: INCREMENTAL BUS ACTIVE
B = 0: NO INCREMENTAL BUS
X = DON’T CARE
10/19
S
MSB
MSB
DATA BYTES
D7
1
X
X
X
X
X
X
X
X
0
CHIP ADDRESS
D96AU422
0
0
D6
X
X
X
X
X
X
X
X
1
0
INPUT SELECTION
D5
0
INPUT GAIN
X
X
X
X
X
X
X
X
SPEAKER
VOLUME
TREBLE
LSB
BASS
0
ACK
D4
B
B
B
B
B
B
B
B
MSB
X
X
D3
0
0
0
0
0
0
0
0
SUBADDRESS
X
1
D3
D2
0
0
0
0
1
1
1
1
D2 D1 D0
LSB
D1
0
0
1
1
0
0
1
1
ACK
LSB
D0
MSB
0
1
0
1
0
1
0
1
DATA 1 to DATA n
INPUT SELECT
INPUT GAIN
VOLUME
NOT ALLOWED
BASS
TREBLE
SPEAKER ATTENUATE "R"
SPEAKER ATTENUATE "L"
DATA
MUTE
MUTE
28dB
0dB
2dB
IN2
SUBADDRESS
LSB
ACK
P

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