Ic Pin Function - Philips VR109/55 Service Manual

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IC501 ( SERVO / SYSTEM CONTROL IC )
Pin IN/ Signal
No. Mark
OUT Name
A-MUTE-
1 OUT
H
OUT REC-
2
CTL(+)
OUT REC-
3
CTL(-)
4 - N.U.
5 OUT C-DRIVE
6 - N.U.
7 - N.U.
IN/ BUS
8
OUT SDA-2
BUS
9 OUT
SCL-2
10 OUT C-F/R
11 - N.U.
12 OUT ROTA
13 OUT RF-SW
14 - N.U.
15 - N.U.
16 - N.U.
D-V
17 OUT
SYNC
18 - N.U.
D-REC-
19 OUT
H
20 - N.U.
06/28/2012

IC PIN FUNCTION

"H" ≥ 4.5V, "L" ≤ 1.0V
Active
Function
Level
Audio Mute
Control H
Signal
Record
Control H/L
Signal (+)
Record
Control H/L
Signal (-)
Not Used -
Capstan
H/Z
Motor Drive
Signal
Not Used -
Not Used -
I2C BUS
H/L
Control Data
I2C BUS
H/L
Control Data
Capstan
Motor
FWD/REV
Control H/L
Signal
(FWD="L" /
REV="H")
Not Used -
Color Phase
Rotary
H/L
Changeover
Signal
Video Head
Switching H/L
Pulse
Not Used -
Not Used -
Not Used -
Dummy
Vertical
H/Z
Synchronized
Pulse
Not Used -
Delayed
Record
Signal H
(Recording=
"H")
Not Used -
1-15-1
Pin IN/ Signal
Mark
No. OUT Name
21 IN REC-SW
22 IN AFC
23 IN V-ENV
24 IN END-S
25 IN ST-S
26 IN LD-SW
27 IN KEY-2
28 - 5V
29 - GND
30 - 5V
31 IN KEY-1
PG-
32 IN DELAY/
TEST
33 - N.U.
34 IN T-REEL
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Active
Function
Level
Record
Safety
H
Switching
Signal
Automatic
Frequency A/D
Control Signal
Video
A/D
Envelope
Signal
Tape END
Position A/D
Detect Signal
Tape Start
Position A/D
Detect Signal
Deck Mode
Position A/D
Detect Signal
Key Scan
A/D
Input Signal 2
Standard
Voltage Input
Terminal of
-
A/D
Converter
(+5V)
GND Supply
Terminal of
A/D -
Converter
(GND)
Power
Supply
Terminal of
A/D -
Converter
(Back Up
+5V)
Key Scan
A/D
Input Signal 2
Video Head
Switching
Pulse Signal A/D
Adjusted
Voltage
Not Used -
Take Up Reel
Rotation H/L
Signal
H67T0PIN