Pin Function - Pioneer HTV-SW1 Service Manual

Pin Function

No. Name
1 DATA Control data input terminal.
Data are entered synchronized to CLOCK.
2 GND Ground terminal
3 SELECT OUT1 Output terminals of the input selector switch
4 VOL IN1 Input terminals of the volume control section
5 LOUD IN1 Frequency characteristic setting terminal of
the loudness section
6 SELECT2 NF1 Each input gain is adjusted by the resistor
connected between this terminal and the
SELECT OUT terminal and the resistor added
between IN A and IN D.
7 SELECT1 IN A Input terminal for channel 1 of the input selector
switch section
8 SELECT1 IN B
9 SELECT1 IN C
10 SELECT1 IN D
11 ATTF OUT1 Output terminals of the volume control section
(initial stage). Connect by C connection to the
VREF terminal 22 for reduction of the switching
noise.
12 ATTR OUT1 Output terminals of the volume control section
(last stage)
13 TONE IN1 Input terminals of the tone control section
14 TC1 A Frequency characteristic setting terminals of
the tone control section for channel 1
15 TC1 B
16 TC1 C
17 TONE OUT1 Output terminals of the tone control section
18 FADER IN1 Input terminals of the fader volume control section
19 REAR OUT1 Output terminals of the fader volume control
section (rear)
20 FRONT OUT1 Output terminals of the fader volume control
section (front)
21 Vcc Analog power supply terminal
22 DATA IC signal ground. Impress 1/2 VCC.
23 FRONT OUT2 Output terminals of the fader volume control
section (front)
Description No. Name
24 REAR OUT2 Output terminals of the fader volume control
section (rear)
25 FADER IN2 Input terminals of the fader volume control section
26 TONE OUT2 Output terminals of the tone control section
27 TC2 C Frequency characteristic setting terminals of
the tone control section for channel 2
28 TC2 B
29 TC2 A
30 TONE IN2 Input terminals of the tone control section
31 ATTR OUT2 Output terminals of the volume control section
(last stage)
32 ATTF OUT2 Output terminals of the volume control section
(initial stage). Connect by C connection to the
VREF terminal 22 for reduction of the switching
noise.
33 SELECT2 IN D Input terminal for channel 2 of the input selector
switch section
34 SELECT2 IN C
35 SELECT2 IN B
36 SELECT2 IN A
37 SELECT2 NF2 Each input gain is adjusted by the resistor
connected between this terminal and the
SELECT OUT terminal and the resistor added
between IN A and IN D.
38 LOUD IN2 Frequency characteristic setting terminal of
the loudness section
39 VOL IN2 Input terminals of the volume control section
40 SELECT OUT1 Output terminals of the input selector switch
41 VDD Digital power supply terminal
42 CLOCK Clock input terminal for serial data transfer
HTV-SW1, HTV-C1
Description
41