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BD3861FS-X (IC501) : Audio sound control
1. Pin layout
32
1
2. Block diagram
32
31
30
29
0dB~
-70dB
Vcc/2
Vcc/2
Vcc/2
Vcc/2
25k
25k
25k
25k
25k
25k
25k
25k
1
2
3
4
3. Pin function
Pin
Symbol
Function
No.
1
A1
CH1 input pin A
2
A2
CH2 input pin A
3
B1
CH1 input pin B
4
B2
CH2 input pin B
5
C1
CH1 input pin C
6
C2
CH2 input pin C
7
D1
CH1 input pin D
8
D2
CH2 input pin D
9
E1
CH1 input pin E
10
E2
CH2 input pin E
11
MIC
Microphone input pin
12
FIL
Filter pin
13
GND
Ground pin
14
DATA
Serial data latch receiving pin
15
CLK
Serial clock receiving pin
16
Vcc
Power supply pin
18
17
28
27
26
25
Middle2
Treble1
Treble2
f0=1kHz
f0=10kHz
f0=10kHz
Vcc/2
Vcc/2
25k
25k
25k
25k
25k
25k
25k
25k
5
6
7
8
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
24
23
22
21
Middle1
Bass1
f0=1kHz
f0=90Hz
0dB~
-59dB
Vcc/2
25k
25k
25k
25k
100k
9
10
11
12
Symbol
Function
OUT2
CH2 output pin
BASS21
CH2 bass filter setting pin
BASS22
CH2 bass filter setting pin
OUT1
CH1 output pin
BASS11
CH1 bass filter setting pin
BASS12
CH1 bass filter settingpin
MID11
CH1 middle filter setting pin
MID12
CH1 middle filter setting pin
MID21
CH2 middle filter setting pin
MID22
CH2 middle filter setting pin
TRE2
CH2 treble filter setting pin
TRE1
CH1 treble filter setting pin
VOL1
CH1 input volume input pin
VOL2
CH2 input volume input pin
GOUT2
CH2 input gain output pin
GOUT1
CH1 input gain output pin
20
19
18
Bass2
f0=90Hz
0dB~
-59dB
Vcc/2
Vcc/2
Logic
13
14
15
FS-SD1000
17
16
1-23
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