Ic Pin Function Descriptions - Sylvania Durabrand DVR90VG Service Manual

Dvd recorder & video cassette recorder
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IC PIN FUNCTION DESCRIPTIONS

< VCR Section >
IC501 (SERVO/SYSTEM CONTROL/OSD)
"H" ≥ 4.5 V, "L" ≤ 1.0 V
Pin
IN/
Signal
No.
OUT
Name
P-DOWN
Power Voltage Down Detector
1
IN
-H
Signal
Ready/Busy Communication
READY/
2
Control with Main Micro
IN
BUSY
Controller
3
IN T-REEL
Take Up Reel Rotation Signal
4
-
NU
Not Used
REMOCON
IN
Remote Control Sensor
5
-IN
DISPLAY-
FL Display Driver IC Enable
6
OUT
ENA
Control Output Signal
DISPLAY-
FL Display Driver IC Data
7
OUT
DATA
Control Output Signal
DISPLAY-
FL Display Driver IC Clock
8
OUT
CLK
Control Output Signal
9
OUT TV/VIDEO RF Conv. ON/OFF Signal
RF Conv. Output Channel
CONV-
10 OUT
Switching Signal 3ch="Hi-z",
SW
4ch="L"
Communication of Clock with
11 OUT S-CLK
VCR Micro Controller
S-DATA-
Communication of Data to
12
IN
IN
VCR Micro Controller
S-DATA-
Communication of Data from
13 OUT
OUT
VCR Micro Controller
14
NU
Not Used
-
15
NU
Not Used
-
NU
Not Used
16
-
IN/
IIC-BUS-
IIC BUS Control Data
17
OUT
SDA
IIC-BUS-
18 OUT
IIC BUS Control Clock
SCL
19 OUT YCA-SCL YCA IC Control Clock
20 OUT YCA-SDA YCA IC Control Data
21 OUT YCA-CS
YCA IC Control Chip Select
Recording Safety SW Detect
REC-
(With Record tab = "L"/ With
22
IN
SAF-SW
out Record tab = "H")
23 OUT RF-SW
Video Head Switching Pulse
D-V
Dummy V-sync Output
24 OUT
SYNC
Function
1-16-1
Pin
IN/
Signal
No.
OUT
Name
System Reset Signal
IN RESET
25
(Reset="L")
LM-FWD/
Loading Motor FWD/ REV
26 OUT
REV
Output
27 OUT P-ON-L
Power On Signal to Low
NU
Not Used
28
-
29 OUT D-REC
Delayed Record Signal
Hi-Fi-H-
Hi-Fi Audio Head Switching
30 OUT
SW
Pulse
VCR-
VCR Audio Mute Control
31 OUT
AUDIO-
Signal
MUTE
Capstan Motor FWD/REV
32 OUT C-F/R
Control Signal (FWD="L"/
REV="H")
33 OUT C-CONT
Capstan Motor Control Signal
34 OUT D-CONT
Drum Motor Control Signal
35
-
NU
Not Used
VDD
VDD (AL+5V)
36
-
Main Clock Output
37 OUT OSCO
14.31818MHz
Main Clock Input
IN OSCI
38
14.31818MHz
-
VSS
VSS (GND)
39
40
IN XI
Main Clock Input
41 OUT XO
Main Clock Output
Operation Mode Selecting
IN SXI
42
Input Signal
DVD Power Supply Control
43 OUT PWR-SW
Signal
SYS-
System Reset Signal
IN
44
RESET
(Reset="L")
REG-
Power Regulator Control
45 OUT
CONT2
Signal
REG-
Power Regulator Control
46 OUT
CONT1
Signal
VIDEO-
Composite Video Signal
47 OUT
OUT
Output
48
-
Vss
VSS (GND)
IN VIDEO-IN Composite Video Signal Input
49
C-SYNC-
Composite Synchronized
50
IN
IN
Pulse
VDD2
VDD2 (AL+5V)
51
-
Function
E9A80PIN

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