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MAIN BOARD IC7 STA2314 (Volume control, Treble and Bass, Gain, 4 Stereo input 1 Stereo output)
Pin No.
Pin Name
1
R_IN3
2
R_IN2
3
R_IN1
4
L_IN1
5
L_IN2
6
L_IN3
7
L_IN4
8
MUXOUT(L)
9
IN(L)
10
MUXOUT(R)
11
IN(R)
12, 13
BIN(R), BOUT(R)
14, 15
BIN(L), BOUT(L)
16
N.C.
17
N.C.
18
TREBLE(L)
19
TREBLE(R)
20
DIG-GND
21
SCL
22
SDA
23
CREF
24
Vs
25
AGND
26
ROUT
27
LOUT
28
R_IN4
I/O
I
Audio 3 right channel input
I
Audio 2 right channel input
I
Audio 1 right channel input
I
Audio 1 left channel input
I
Audio 2 left channel input
I
Audio 3 left channel input
I
Audio 4 left channel input
O
Multiplexer left channel output
I
Left channel input
O
Multiplexer right channel output
I
Right channel input
-
Right channel bass peripheral regulation
-
Left channel bass peripheral regulation
-
Not used
-
Not used
-
Left channel treble peripheral regulation
-
Right channel treble peripheral regulation
-
Digital ground
I
I2C clock
I
I2C data
-
Reference voltage
-
Power supply
-
Analog Ground
O
Right channel output
O
Left channel output
I
Audio 4 right channel input
Description
HCD-DX400
21
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