Pioneer VSX 108 - AV Receiver Service Manual page 30

VSX-108
Pin Function
No. Name
Control data input
1 DATA
Inputs a data by synchronizing with CLOCK.
2 GND Ground
3 SELECT OUT1 Output pin of the input selector switch section
4 VOL IN1 Input pin of the volume section
Frequency characteristic setting pin of the
5 LOUD IN1
loudness section
Adjust each input gain by a resistor which is
connected between this pin and SELECT
6 SELECT NF1
OUT pin, and the resistor which is added to
INA to IND.
7 SELECT1 INA
CH1 input pins of the input selector switch
8 SELECT1 INB
section
9 SELECT1 INC
10 SELECT1 IND
11 ATTF OUT1 Output pin of the volume section (first-stage)
12 ATTR OUT1 Output pin of the volume section (later-stage)
13 TONE IN1 Input pin of the tone control section
14 TC1 A
15 TC1 B
Frequency characteristic setting pin of the
CH1 tone control section
16 TC1 C
17 TONE OUT1 Output pin of the tone control section
18 FADER IN1 Input pin of the fader volume section
19 REAR OUT1 Fader volume (rear) output pin
20 FRONT OUT1 Fader volume (front) output pin
21 V Analog power supply pin
CC
30
Function No.
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
Name
Signal ground of IC
V
REF
Apply a 1/2 VCC
FRONT OUT2 Fader volume (front) output pin
REAR OUT2 Fader volume (rear) output pin
FADER OUT2 Input pin of the fader volume section
TONE OUT2 Output pin of the tone control section
TC2 C
Frequency characteristic setting pin of the
CH2 tone control section
TC2 B
TC2 A
TONE IN2 Input pin of the tone control section
ATTR OUT2 Output pin of the volume section (later-stage)
ATTF OUT2 Output pin of the volume section (first-stage)
SELECT2 IND
SELECT2 INC
CH2 input pin of the input selector switch
section
SELECT2 INB
SELECT2 INA
Adjust each input gain by a resistor which is
connected between this pin and SELECT
SELECT NF2
OUT pin, and the resistor which is added to
INA to IND.
Frequency characteristic setting pin of the
LOUD IN2
loudness section
VOL IN2 Input pin of the volume section
SELECT OUT2 Output pin of the input selector switch section
V Digital power supply pin
DD
CLOCK Clock input for serial data transfer
Function