Aiwa CT-X2058 Service Manual page 14

1C, LC75383E
Pin No. Pin Name
1 R V R IN
2 R C O M
3-5
RT1-RT3
6 R T O U T
7 R S IN
8-10
RS1-RS3
11 R S O U T
12
F R IN
13 F R
14 R R
15 v s s
16
C L
17 D I
18 C E
19
V ref
20 R L
21 F L
22
F L IN
23 L S O U T
24-26 LS3-LS1
27
L S IN
28
L T O U T
29-31 LT3-LT1
32
LC O M
33 L V R IN
34
L S E L O
35 L I
36
A U X /L
37 TP/L
38 TU/L
39 V D D
40 TU/R
41 TP/R
42 A U X/R
I/O
I
4dB V R input. Must be driven with low impedance.
ld B V R common pin
—
For the connection of capacitors that compensate for bass and treble in the tone control
circuits.
—
A high-frequency compensation capacitor must be connected between T1 and T2.
A low-frequency compensation capacitor must be connected between T2 and T3.
0 Tone control output
I
Super bass input. Must be driven with low impedance.
For the connection of super bass compensation capacitors
n
Super bass output
I
Fader input. Must be driven with low impedance.
0
Fader outputs. The front and rear sides can be faded independently.
0
— Ground
I
Serial data and clock inputs for control
I
Chip enable. Data is written to the internal latch when the chip enable signal goes "L "
from "H ", and each analog switch is activated. Data transfer is enabled at "H ".
Generates a 1/2VDD power source. A capacitor must be connected between V ref and
V S S as a troubleshooting against power ripples.
()
Fader outputs. The front and rear sides can be faded independently.
o
I
Fader input. Must be driven with low impedance.
0 Super bass output
— For the connection of super bass compensation capacitors
I Super bass input. Must be driven with low impedance.
o Tone control output
For the connection of capacitors that comensate for bass and treble in the tone control
circuit.
—
A high-frequency compensation capacitor must be connected between T1 and T2.
A low-frequency compensation capacitor must be connected between T2 and T3.
— ld B V R common pin
I 4dB V R input. Must be driven with low impedance.
0 Input selector output
I
I
Signal inputs
I
I
Power supply
I
Signal inputs
I
I
18
Description