TDA7449D STMicroelectronics, TDA7449D Datasheet - Page 10

• Manufacturer Part Number: TDA7449D
• Manufacturer: STMicroelectronics

Specifications of TDA7449D

• Lead Free Status / Rohs Status: Compliant

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