Philips VR550 - IC Pin Function Descriptions; IC501 (SERVO; SYSTEM CONTROL IC)

1-14-1 HG470PIN
IC PIN FUNCTION DESCRIPTIONS
IC501( SERVO / SYSTEM CONTROL IC )
“H” ≥ 4.5V, “L” ≤ 1.0V
Pin
No.
IN/
OUT
Signal
Name
Function
Active
Level
1IN
SC2-IN
Input Signal from Pin
8 of SCART2
A/D
2IN
PG-DELAY
Video Head
Switching Pulse
Signal Adjusted
Voltage
A/D
3IN
POW-SAF
P-ON Power
Detection Input
Signal
A/D
4IN
END-S
Tape End Position
Detect Signal
A/D
5IN
AFC
Automatic Frequency
Control Signal
A/D
6IN
V-ENV
Video Envelope
Comparator Signal
A/D
7IN
KEY-1
Key Scan Input
Signal 1
A/D
8IN
KEY-2
Key Scan Input
Signal 2
A/D
9IN
LD-SW
Deck Mode Position
Detector Signal
A/D
10 IN
ST-S
Tape Start Position
Detector Signal
A/D
11 -
N.U. Not Used
-
12 -
N.U. Not Used
-
13 OUT
D-V-SYNC
Dummy V-sync
Output
H/Hi-z
14 IN
REMOCO
N-IN
Remote Control
Sensor
L
15 OUT
C-ROTA
Color Phase Rotary
Changeover SIgnal
H/L
16 OUT
H-A-SW
Video Head Amp
Switching Pulse
H/L
17 IN
H-A-COMP
Head Amp
Comparator Signal
H/L
18 OUT
RF-SW
Video Head
Switching Pulse
H/L
19 OUT
Hi-Fi-H-SW
Hi-Fi Audio Head
Switching Pulse
H/L
20 -
N.U. Not Used
-
21 -
N.U. Not Used
-
22 -
N.U. Not Used
-
23 -
N.U. Not Used
-
24 -
N.U. Not Used
-
25 -
N.U. Not Used
-
26 -
N.U. Not Used
-
27 OUT
RGB-
THROUGH
SCART 2 RGB
Through Control
Signal
L/H
28 OUT
LINE-
MUTE
Audio Mute Control
Signal
H
29 -
N.U. Not Used
-
30 -
N.U. Not Used
-
31 IN
REC-SAF-
SW
Recording Safety
SW Detect (With
Record tab="L"/With
out Record tab="H")
H
32 IN
A-MODE
Hi-Fi Tape Detection
Signal
L
33 OUT
D-REC-H
Delayed Record
Signal
H
34 IN
RESET
System Reset Signal
(Reset=”L”)
L
35 IN
XC-IN Sub Clock
-
36 OUT
XC-OUT Sub Clock
-
37 -
Vcc Vcc
-
38 IN
X-IN Main Clock Input
-
39 OUT
X-OUT Main Clock Input
-
40 -
Vss Vss(GND)
-
41 -
N.U. Not Used
-
42 -
N.U. Not Used
-
43 IN
CLKSEL Clock Select (GND)
-
44 IN
OSCin
Clock Input for letter
size
-
45 OUT
OSCout
Clock Output for
letter size
-
46 -
N.U. Not Used
-
47 -
LP LP
-
48 IN
FSC-IN
[4.43MHz]
4.43MHz Clock Input
-
49 -
OSDVss OSDVss
-
50 IN
OSD-V-IN
OSD Video Signal
Input
-
51 -
N.U. Not Used
-
52 OUT
OSD-V-
OUT
OSD Video Signal
Output
-
53 -
OSDVcc OSDVcc
-
54 -
HLF
LPF Connected
Terminal (Slicer)
-
55 -
N.U. Not Used
-
56 -
N.U. Not Used
-
57 -
N.U. Not Used
-
Pin
No.
IN/
OUT
Signal
Name
Function
Active
Level