1-13-1
HB3J1PIN
IC PIN FUNCTION DESCRIPTIONS
Comparison Chart of Models and Marks
IC501( SERVO / SYSTEM CONTROL IC )
“H”
≥
4.5V, “L”
≤
1.0V
Pins that have * in the Pin No. section on table below
are not used.
Model
Mark
EWV401B
A
EWV601B
B
Pin
No.
Mark
IN/
OUT
Signal
Name
Function
Active
Level
1
IN
REMO-
CON-IN
Remote
Control Sen-
sor
L
2
OUT TV/VCR
RF Conv. ON/
OFF Signal
(TV="L"/
VCR="H")
H/L
3
-
N.U.
Not Used
-
4
-
N.U.
Not Used
-
5
-
N.U.
Not Used
-
6
-
N.U.
Not Used
-
7
OUT
INSEL/
ST-SL
Input Selector
Control Signal
(EE/Rec)/Still/
Slow
(Playback)
H/Hi-z
/L
8
A
-
N.U.
Not Used
-
B
OUT HiFi-CS
HiFi IC Chip
Select
H
9
IN/
OUT
I
2
C BUS-
DATA
I
2
C BUS Data
Input/Output
H/L
10
OUT I
2
C BUS-
CLK
I
2
C BUS Clock
Output
H/L
11
A
-
N.U.
Not Used
-
B
OUT HiFi-CLK
HiFi IC
Control Clock
Output
H/L
12
A
-
N.U.
Not Used
-
B
OUT
HiFi-
DATA
HiFi IC
Control Data
Output
H/L
13
OUT A-MUTE
Audio Mute
Control
Signal
(Mute = “H”)
H
14
IN
H-A-
COMP
Head Amp
Comparator
Signal
H/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
OUT RF-SW
Video Head
Switching
Pulse
H/L
18
A
-
N.U.
Not Used
-
B
OUT
HiFi-H-
SW
HiFi Audio
Head
Switching
Pulse
H/L
19
OUT
REC-CTL
(+)
Record
Control
Signal (+)
H/L
20
OUT
REC-CTL
(-)
Record
Control
Signal (-)
H/L
21
IN
C-SYNC
Composite
Synchronized
Pulse
PULSE
22
-
GND
GND
-
23
-
N.U.
Not Used
-
24
-
OSDVss
OSDVss
-
25
IN
REC-SW
Recording
Safety SW
Detect (With
Record tab =
”L”/ With out
Record tab =
”H”)
H/L
*26
IN
C-
VIDEO-
IN
Composite
Video
Signal Input
(Slicer)
-
*27
IN
VHOLD
Condenser
Connected
Terminal
(Slicer)
-
28
-
HLF
LPF
Connected
Terminal
(Slicer)
-
29
-
GND
GND
-
Pin
No.
Mark
IN/
OUT
Signal
Name
Function
Active
Level
