Ic Pin Function Descriptions - Hitachi DV-PF73U Service Manual

8 IC PIN FUNCTION DESCRIPTIONS

[ VCR Section ]
IC501( SERVO / SYSTEM CONTROL IC )
Pin IN/ Signal
No. OUT Name
1 IN P-DOWN -L
REC-SAF-
2 IN
SW
3 IN T-REEL
4 - N.U.
REMOTE-
5 IN
VIDEO
DISPLAY-
6 OUT
CLK
OUT A-MUTE-H
7
DISPLAY-
8 OUT
DATA
DISPLAY-
9 OUT
ENA
N.U.
10 -
11 OUT TRICK-H
IN/
IIC-BUS-
12
OUT SDA
IIC-BUS-
13 OUT
SCL
14 OUT SP/LP/SLP
15 - N.U.
INSEL/
16 OUT
ST-SL
PICTURE-
17 OUT
SEL
"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
Top Speed Select
Signal (SP="L"/ H/Z/L
LP="Z"/SLP="H")
Not Used -
Input Selector
Control Signal
H/Hi-z
(EE/Rec)/Still/
/L
Slow
(Playback)
Picture Control
-
Signal
Pin IN/ Signal
No. OUT Name
18 OUT RF-SW
19 OUT D-V SYNC
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 HiFi-H-SW
DVD-
26 OUT
POWER
27 OUT C-F/R
28 OUT C-CONT
29 OUT D-CONT
30 - N.U.
VDD
31 -
32 OUT OSCO
33 IN OSCI
- VSS
34
35 IN XI
36 OUT XO
37 IN SXI
38 OUT VIDEO-OUT
Vss2
39 -
VIDEO-IN
40 IN
Active
Function
Level
Video Head
H/L
Switching Pulse
Dummy
H/Hi-z
V-sync Output
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
DVD Power
H
Control Signal
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
37