Ic Pin Function Descriptions - Hitachi DV-PF2U Service Manual

[ VCR Section ]
IC501( SERVO / SYSTEM CONTROL IC )
Pin IN/ Signal
No. OUT Name
REMO- Remote
1 IN
CON-IN Control Sensor
RF Conv. ON/OFF
2 OUT TV/VCR Signal (TV="L"/
VCR="H")
3 - N.U. Not Used
DVD Power Control
DVD-
4 OUT
POWER
Signal
5 - N.U. Not Used
6 - N.U. Not Used
Input Selector
INSEL/ Control Signal
7 OUT
ST-SL (EE/Rec)/Still/Slow
(Playback)
8 OUT HiFi-CS HiFi IC Chip Select
2
IN/
I C BUS- I
9
OUT
DATA Output
2
10 OUT I C BUS-
I
CLK
11 OUT SERIAL- Serial IC Control
CLK Clock Output
12 OUT SERIAL- Serial IC Control Data
DATA Output
Audio Mute Control
13 OUT A-MUTE
Signal (Mute = "H")
H-A- Head Amp
14 IN
COMP Coparator Signal
Color Phase Rotary
15 OUT C-ROTA
Changeover SIgnal
Video Head Amp
16 OUT H-A-SW
Switching Pulse
Video Head Switching
17 OUT RF-SW
Pulse
18 OUT HiFi-H- HiFi Audio Head
SW Switching Pulse
19 OUT REC-CTL Record Control
(+) Signal (+)
20 OUT REC-CTL Record Control
(-) Signal (-)
Composite
21 IN C-SYNC
Synchronized Pulse
22 - GND GND
23 - N.U. Not Used
24 - OSDVss OSDVss
Recoding Safety SW
Detect (With Record
25 IN REC-SW
tab="L"/ With out
Record tab="H")

IC PIN FUNCTION DESCRIPTIONS

"H" ≥ 4.5V, "L" ≤ 1.0V
Active
Function
Level
H/Hi-z
2
C BUS Data Input/
2
C BUS Clock Output
PULSE
Pin IN/
No. OUT
C-VIDEO-
26 IN
IN
27 IN VHOLD
28 - HLF
L
29 - GND
H/L
30 OUT OSD- BB-
OUT
-
OSD-
L 31 OUT CHARA-
OUT
-
32 - OSDVcc
-
D-V
33 OUT
SYNC
34 IN RESET
/L
35 IN OSC
H
H/L
36 OUT OSC
37 - Vcc
H/L
38 IN X-IN
H/L
39 OUT X-OUT
40 - Vss
H/L
41 IN XC-IN
H
42 OUT XC-OUT
43 IN CLKSEL
H/L
44 - N.U.
H/L
SP/LP/
45 OUT
SLP
H/L
46 - N.U.
H/L
TRICK/C-
47 OUT
G/APC
H/L
48 OUT C-F/R
H/L
49 IN T-REEL
H/L
50 - N.U.
51 IN C-FG
-
-
52 IN D-FG
-
53 IN D-PG
H/L
Signal
Function
Name
Composite Video
Signal Input (Slicer)
Condenser
Connected
Terminal (Slicer)
LPF Connected
Terminal (Slicer)
GND
Composite Video
Signal Output
(Blue Back)
Character Output
(Superimposed)
OSDVcc
Dummy V-sync
Output
System Reset
Signal (Reset="L")
Clock Input
IN
for letter size
Clock Output for let-
OUT
ter size
Vcc
Main Clock Input
14.31818 MHz
Main Clock Output
Vss(GND)
Sub Clock 32 kHz
Sub Clock 32 kHz
Clock Select (GND)
Not Used
Top Speed Select
Siganl (SP="L"/
LP="Z"/SLP="H")
Not Used
Special Playback/
Copy Guard/APC
Control Signal
Capstan Motor FWD/
REV Control Signal
(FWD="L"/REV="H")
Take Up Reel
Rotation Signal
Not Used
Capstan Motor
Rotation Detection
Pulse
Drum Motor Rotation
Detection Pulse
Drum Motor Pulse
Generator
Active
Level
-
-
-
-
-
-
-
H/Hi-z
L
-
-
-
-
-
-
-
-
L
-
H/Z/L
-
H/Z/L
H/L
PULSE
-
PULSE
PULSE
PULSE
4-4-1