TDA7438 查看數據表（PDF） - STMicroelectronics
零件编号
产品描述 (功能)
比赛名单
TDA7438 Datasheet PDF : 19 Pages
| |||
TDA7438
Figure 18. .
CHIP ADDRESS
SUBADDRESS
DATA 1 to DATA n
MSB
LSB
MSB
LSB
MSB
S 1 0 0 0 1 0 0 0 ACK X X X 1 D3 D2 D1 D0 ACK
D96AU422
DATA
LSB
ACK P
Table 6. POWER ON RESET CONDITION
INPUT SELECTION
INPUT GAIN
VOLUME
BASS
MIDDLE
TREBLE
SPEAKER
6 DATA BYTES
Address = 88 HEX (ADDR:OPEN).
IN2
28dB
MUTE
0dB
2dB
2dB
MUTE
Table 7. FUNCTION SELECTION: First byte (subaddress)
MSB
D7
D6
D5
D4
D3
D2
D1
X
X
X
B
0
0
0
X
X
X
B
0
0
0
X
X
X
B
0
0
1
X
X
X
B
0
0
1
X
X
X
B
0
1
0
X
X
X
B
0
1
0
X
X
X
B
0
1
1
X
X
X
B
0
1
1
B = 1: INCREMENTAL BUS ACTIVE
B = 0: NO INCREMENTAL BUS
X = DON’T CARE
Figure 19. INPUT SELECTION
MSB
D7
D6
D5
D4
D3
D2
D1
X
X
X
X
X
X
0
X
X
X
X
X
X
0
X
X
X
X
X
X
1
X
X
X
X
X
X
1
LSB
D0
0
1
0
1
0
1
0
1
SUBADDRESS
INPUT SELECT
INPUT GAIN
VOLUME
BASS
MIDDLE
TREBLE
SPEAKER ATTENUATE "R"
SPEAKER ATTENUATE "L"
LSB
D0
0
1
0
1
INPUT MULTIPLEXER
IN3
NOT ALLOWED
IN2
IN1
10/19
Share Link: 