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8 IC PIN FUNCTION DESCRIPTIONS
IC501( SERVO / SYSTEM CONTROL IC )
Pin
IN/
Signal
No.
OUT
Name
P-DOWN -L
1
IN
REC-SAF-
2
IN
SW
T-REEL
3
IN
N.U.
4
-
REMOCON-
5
IN
IN
DISPLAY-
6
OUT
CLK
7
OUT A-MUTE-H
DISPLAY-
8
OUT
DATA
DISPLAY-
9
OUT
ENA
10
-
N.U.
11 OUT TRICK-H
IN/
IIC-BUS
12
OUT
SDA
IIC-BUS
13 OUT
SCL
14
-
N.U.
N.U.
15
-
INSEL/
16 OUT
ST-SL
17
-
N.U.
18 OUT RF-SW
19 OUT D-V SYNC
22
"H" ≥ 4.5V, "L" ≤ 1.0V
Active
Function
Level
Power
Voltage Down
L
Detector
Signal
Recording Safety
SW Detect (With
Record tab = "L"/
H/L
With out Record
tab = "H")
Take Up Reel
Rotation
PULSE
Signal
Not Used
-
Remote
L
Control Sensor
7seg. Driver IC
Clock Control
H/L
Output Signal
Audio Mute Con-
trol
H
Signal
(Mute = "H")
7seg. Driver IC
Data Control Out-
H/L
put Signal
7seg. Driver IC
Enable Control
L
Output Signal
Not Used
-
Special Play-
H/Z/L
back= "H"
IIC BUS Control
H/L
Data
IIC BUS Control
H/L
Clock
Not Used
-
Not Used
-
Input Selector
Control Signal
H/Hi-z
(EE/Rec)/Still/
/L
Slow
(Playback)
Not Used
-
Video Head
H/L
Switching Pulse
Dummy
H/Hi-z
V-sync Output
Pin
IN/
Signal
No.
OUT
Name
20
IN
RESET
LM-FWD/
21 OUT
REV
22 OUT P-ON-L
23 OUT D-PB-L
24 OUT D-REC-H
25 OUT Hi-Fi-H-SW
26 OUT SP/LP/SLP
27 OUT C-F/R
28 OUT C-CONT
29 OUT D-CONT
30
-
N.U.
31
-
VDD
32 OUT OSCO
33
IN
OSCI
-
Vss
34
35
IN
XI
36 OUT XO
37
IN
SXI
38 OUT VIDEO-OUT
39
-
Vss2
VIDEO-IN
40
IN
C-SYNC
41
IN
Active
Function
Level
System Reset
Signal
L
(Reset="L")
Loading Motor
FWD/ REV Out-
H/Z/L
put
Power On
Signal to
L
Low
Playback Instruc-
L
tion Signal
Delayed Record
H
Signal
HiFi Audio Head
H/L
Switching Pulse
Top Speed Select
Signal (SP="L"/
H/Z/L
LP="Z"/SLP="H")
Capstan Motor
FWD/REV Con-
trol Signal
H/L
(FWD="L"/
REV="H")
Capstan Motor
PWM
Control Signal
Drum Motor Con-
PWM
trol Signal
Not Used
-
VDD
-
Main Clock Out-
-
put 14.31818MHz
Main Clock Input
-
14.31818MHz
VSS
Sub Clock Input
-
32.768 MHz
Sub Clock Out-
-
put 32.768 MHz
Operation Mode
Selecting Input
-
Signal
Composite Video
-
Signal Output
Vss2
-
Composite Video
Signal Input
Composite
Synchronized
PULSE
Pulse
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