Cpu Port Functions - Sanyo CP21YS2 Service Manual

CPU Port Functions

Pin No. Display
1 SIFout
2 IFAGC-F
3 SIF-IN
4 FM-F
5 FMout
6 Aud out
7 SND-APC-F
8 IF-Vcc
9 VM/Ext-A-IN
10 ABL
11 RGB Vcc
12 R-Out
13 G-Out
14 B-Out
15 NC
16 Vramp
17 V-out
18 Iref
19 H-Vcc
20 AFC-F
21 H-out
22 VCD-GND
23 Power Fail IN
24 S-TERM IN
25 STATUS IN
26 Remote IN
27 P14/PWM1
28 P15/PWM2
29
ON-TIMER LED OUT
30 MUTE OUT
31 IIC SDA1
32 IIC SCK1
33 X ' tal
34 X ' tal
35 5V
36 Power Out
37 Bass Expander Bass Expander On/Off function
ON/OFF OUT
38 VIF M OUT
/Bilingual Out
39 AD KEY IN
40 RESET
Functions
SIF Output (NICAM)
IF AGC Filter
SIF Input
Filter for the DC loop of FM
FM detector output
Audio output
Snd VCO frequency is locked at
500kHz from SIF
DC Supply pin for IF circuit
External audio signal input
Auto Beam Limiter function
Vcc input pin of RGB output block
function
R signal output pin function
G signal output pin function
B signal output pin function
Not Connected
To generate a ramp waveform for
the reference V-out
Output pin of vertical synchroniza-
tion ramp signal
Producing reference current
Vcc of Horizontal deflection and
BUS interface
AFC Filter pin of horizontal VCO
function
Horizontal output pin
Video Chroma Deflection GND
Power Fail Input function
S-Video input
Factory PC mode status (L=ON)
Remote Control signal receiver
On timer led out function
Mute out function
IIC-Bus Data Line
IIC-Bus Clock Line
Crystal Oscillator
Crystal Oscillator
Supply (5V)
Power On/Off signal output
VIF M Out/Bilingual Out function
Key signal input
RESET pin function
Pin No. Display
41 FILT
42 GND
43 CCD-Vcc
detector
44 FBP-IN
45 YC-C
46 YC-Y
47 C-APC2
48 DVD-Y
49 CB-IN
50 X ' tal
51 CR-IN
52 SVO/FSC
53 C-APC-F
54 Ext-Video-IN
55 VCD-Vcc
56 Int-Video-IN
57 Blk-F
58 PIF-APC-F
function
59 AFT
60 Video out
61 RF AGC
62 IF-GND
63 VIF IN
64 VIF IN
-7-
Functions
FILT pin function
Ground
Vcc (5V) pin for 1H delay-line
Fly Back Pulse Input
Y/C-C Input function
Y/C-Y Input function
AFC filter pin of chroma VCO.
(3.58MHz)
DVD-Y Input
C B Input (for DVD)
4.43MHz Crystal
C R Input (for DVD)
Selected Video Output or FSC Output
Chroma APC Filter
Ext Video Input & Y Input in S-VHS
mode
Video Chroma Deflection VCC
Int. Video Input & Chroma Signal
Input in S-VHS mode
Black peak level detection in black
stretch circuit.
APC filter pin for PLL circuit
Automatic Fine Tuning Output pin
Video Output pin
RF AGC Output pin
Ground of IF circuit
PIF input pin
PIF input pin
function.