Ic Pin Function Descriptions; Ic501( Servo / System Control Ic ) - FUNAI HDR-A2835D Service Manual

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IC501( SERVO / SYSTEM CONTROL IC )

Pin IN/ Signal
No. OUT Name
1 - NU
IN PG-DELAY Video Head Switching Pulse
2
3 IN POW-SAF
4 IN END-S
5 - NU
6 IN V-ENV
7 IN KEY-1
8 IN KEY-2
9 IN LD-SW
10 IN ST-S
11 - NU
12 - NU
13 OUT D-V- SYNC Dummy V-sync Output
IN REMOCON
14
-IN
15 OUT C-ROTA
16 OUT H-A-SW
17 IN H-A-COMP Head Amp Comparator Signal
18 OUT RF-SW
19 OUT Hi-Fi-H-SW HiFi Audio Head Switching
20 - NU
21 -
NU
22 -
NU
23 - NU
24 - NU
25 -
NU
26 OUT REC-LED
27 -
NU
28 - NU
29 - NU
30 -
NU
IN REC-SAF-
31
SW
32 IN A-MODE

IC PIN FUNCTION DESCRIPTIONS

Function
Not Used
Signal Adjusted Voltage
Abnormal Voltage Detection
Tape End Position Detect
Signal
Not Used
Video Envelope Comparator
Signal
Key Scan Input Signal 1
Key Scan Input Signal 2
Deck Mode Position Detector
Signal
Tape Start Position Detector
Signal
Not Used
Not Used
Remote Control Sensor
Color Phase Rotary
Changeover SIgnal
Video Head Amp Switching
Pulse
Video Head Switching Pulse
Pulse
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Rec Mode LED Signal Output
Not Used
Not Used
Not Used
Not Used
Recording Safety SW Detect
(With Record tab="L"/ With out
Record tab="H")
Hi-Fi Tape Detection Signal
Pin IN/ Signal
No. OUT Name
33 OUT D-REC-H
34 IN RESET
35 IN Xcin
36 OUT Xcout
37 - Vcc
38 IN Xin
39 OUT Xout
40 - GND
41 - NU
42 -
NU
43 IN CLKSEL
44 IN OSCin
45 OUT OSCout
46 - NUB
47 IN LP
IN FSC-IN
48
[4.43MHz]
49 -
OSDVss
50 IN OSD-V-IN
51 -
LECHA
52 OUT OSD-V-
OUT
53 - OSDVcc
54 -
HLF
55 -
NU
56 -
NU
57 - NU
58 IN C-CYNC
59 - NU
60 OUT C-POW-SW Capstan Power Switching
61 -
NU
62 - NU
63 - NU
64 IN S-CS
65 OUT S-DATA-
OUT
66 IN S-DATA-IN
67 OUT S-CLOCK
1-16-1
Function
Delayed Record Signal
System Reset Signal
(Reset="L")
Sub Clock
Sub Clock
Vcc
Main Clock Input
Main Clock Input
Vss(GND)
Not Used
Not Used
Clock Select (GND)
Clock Input for letter size
Clock Output for letter size
Not Used
LP
4.43MHz Clock Input
OSDVss
OSD Video Signal Input
Not Used
OSD Video Signal Output
OSDVcc
LPF Connected Terminal
(Slicer)
Not Used
Not Used
Not Used
Composite Synchronized
Pulse
Not Used
Signal
Not Used
Not Used
Not Used
Sub Micro Controller Interface
Chip Select Signal Input
Communication of Data from
VCR Micro Controller
Communication of Data to
VCR Micro Controller
Communication of Clock with
VCR Micro Controller
E434GPIN