Ic Pin Function Descriptions - Emerson U40310001 Service Manual

IC PIN FUNCTION DESCRIPTIONS

IC501( SERVO / SYSTEM CONTROL IC )
Pins that have * in the Pin No. section on table below
are not used.
Pin IN/ Signal
No. OUT Name
P-DOWN Power Voltage Down
1 IN
-L Detector Signal
Recording Safety
SW Detect (With
REC-
2 IN Record tab = "L"/
SAF-SW
With out Record tab
= "H")
Take Up Reel
3 IN T-REEL
Rotation Signal
4 - N.U. Not Used
REMOTE Remote Control
5 IN
-VIDEO Sensor
6 - N.U. Not Used
A-MUTE- Audio Mute Control
7 OUT
H Signal (Mute = "H")
8 - N.U. Not Used
9 - N.U. Not Used
10 - N.U. Not Used
Special Playback=
11 OUT TRICK-H
"H"
IN/
IIC-BUS-
IIC BUS Control Data
12
OUT SDA
IIC-BUS- IIC BUS Control
13 OUT
SCL Clock
Top Speed Select
SP/LP/
Signal (SP="L"/
14 OUT
SLP
LP="Z"/SLP="H")
15 - N.U. Not Used
Input Selector
16 OUT INSEL/ Control Signal (EE/
ST-SL Rec)/Still/Slow
(Playback)
17 - N.U. Not Used
Video Head
18 OUT RF-SW
Switching Pulse
19 OUT D-V Dummy V-sync
SYNC Output
System Reset Signal
20 IN RESET
(Reset="L")
21 OUT LM-FWD/ Loading Motor FWD/
REV REV Output
Power On Signal to
22 OUT P-ON-L
Low
"H" ≥ 4.5V, "L" ≤ 1.0V
Active
Function
Level
L
H/L
PULSE
-
L
-
H
-
-
-
H/Z/L
H/L
H/L
H/Z/L
-
H/Hi-z
/L
-
H/L
H/Hi-z
L
H/Z/L
L
1-15-1
Pin IN/ Signal
No. OUT Name
Playback Instruction
23 OUT D-PB-L
Signal
24 OUT D-REC-H Delayed Record
Signal
25 - N.U. Not Used
DVD- DVD Power Control
26 OUT
POWER Signal
Capstan Motor FWD/
27 OUT C-F/R REV Control Signal
(FWD="L"/REV="H")
Capstan Motor
28 OUT C-CONT
Control Signal
Drum Motor Control
29 OUT D-CONT
Signal
30 - N.U. Not Used
31 - VDD VDD
Main Clock Output
32 OUT OSCO
14.31818MHz
Main Clock Input
33 IN OSCI
14.31818MHz
- VSS
34 VSS
Sub Clock Input
35 IN XI
32.768 MHz
Sub Clock Output
36 OUT XO
32.768 MHz
Operation Mode
37 IN SXI Selecting Input
Signal
VIDEO- Composite Video
38 OUT
OUT Signal Output
39 - Vss2 Vss2
VIDEO- Composite Video
40 IN
IN Signal Input
Composite
41 IN C-SYNC
Synchronized Pulse
42 - VDD2 VDD2
Low Path Filter Input
43 IN AFCC
Signal For AFC
Low Path Filter
44 OUT AFCLPF Output Signal For
AFC
45 - N.U. Not Used
OUTPUT-
46 OUT Output Select
SELECT
Drum PG/FG Input
47 IN D-PFG
Signal
Active
Function
Level
L
H
-
H
H/L
PWM
PWM
-
-
-
-
-
-
-
-
-
PULSE
-
-
-
-
H/L
PULSE
H94X1PIN