Ic Pin Function Descriptions - Magnavox MWC20T6 Service Manual

IC PIN FUNCTION DESCRIPTIONS

IC1201 (TV/VCR Micro Controller IC)
"H" ≥ 4.5 V, "L" ≤ 1.0 V
Pin IN/ Signal
No. OUT Name
1 IN LD-SW Loading Switch Input
2 OUT DVD-LED DVD LED Control Output
P-SAFETY Power Supply Failure
3 IN
2 Detection 2
4 - NU Not Used
5 IN KEY0 Key Input 0
6 IN KEY1 Key Input 1
7 IN END-SENS End-Sensor
8 IN AFT AFT Voltage Input
9 IN ST-SENS Start-Sensor
10 IN V-ENV Video Envelope Input
Volume Control Signal
11 OUT VOLUME
Output
12 OUT SP-MUTE Speaker Mute Signal Output
13 OUT DV-SYNC Artificial Vertical Sync Output
14 IN REMOTE Remote Control Signal Input
Color Phase Rotary
15 OUT ROTA
Changeover Signal
Video Head Amp Switching
16 OUT V-H-SW
Pulse
17 IN ENV-DET Envelope Comparator Signal
18 OUT RF-SW Video Head Switching Pulse
19 - NU Not Used
20 OUT D-PB-L Output in Playback
21 OUT REC-LED REC LED Control Signal
NORMAL-
22 IN Audio Mode Input Signal
H
23 - NU Not Used
24 - NU Not Used
DVD- Remote Control Signal
25 OUT
REMOTE Output to DVD
TV/VCR-
26 OUT TV/VCR LED Control Signal
LED
27 - NU Not Used
External Input or
28 OUT EXT-L
Playback = Output
D-REC Delayed Record/Playback
29 OUT
/PB-L Control Signal
30 - NU Not Used
31 OUT P-ON-H Power On Signal at High
Function
1-15-1
Pin IN/ Signal
No. OUT Name
32 - NU Not Used
REC- Record Protection Tab
33 IN
SAFETY Detection
System Reset Signal (Reset
34 IN RESET
= "L")
35 IN XC-IN Sub Clock (32kHz)
36 OUT XC-OUT Sub Clock (32kHz)
37 - TIMER+5V Vcc
38 IN X-IN Main Clock (10.6MHz)
39 OUT X-OUT Main Clock (10.6MHz)
40 - GND GND
41 OUT SPOT-KILL Counter Measure for Spot
DVD-MAIN- Power On Signal at High for
42 IN
POWER DVD
43 IN CLKSEL Clock Select (GND)
Delayed Record Control
44 OUT D-REC-H
Signal
45 IN I2C-OPEN Chip Select
46 - GND GND
DVD-
47 IN AUDIO- DVD Audio Mute Signal
MUTE
48 OUT DVD-H DVD at High
49 - GND GND
50 IN CS DVD Interface Chip Select
51 IN SCLK DVD Interface Serial Clock
52 IN SDATA DVD Interface Serial Data
53 - P-ON+5V OSD Vcc
54 - HLF Horizontal Filter
55 IN V-HOLD Vertical Hold
Composite Video Signal
56 IN CV-IN
Input
57 - GND GND
58 IN H-SYNC Horizontal SYNC Input
59 IN V-SYNC Vertical SYNC Input
60 OUT OSD-BLK Output for Picture Cut off
61 - NU Not Used
62 OUT OSD-B Blue Signal Output
63 OUT OSD-G Green Signal Output
64 OUT OSD-R Red Signal Output
AUDIO-
65 OUT Audio Mute Signal Output
MUTE
Function
T1202PIN