Changhong Electric PT4206, Service Manual, Page: 9 / 48

9
2.2.
2 VPC3230 General
VPC3230 Pin Function Descriptions
Pin No. Pin Name Short Description
1 3 R1G1B1IN RGB Analog Component Input 1
4 6 R2G2B2IN RGB Analog Component Input 2
7 64 30
11 12 25
35 65 77
46 51 68
80
GND GND
8 NC NC
9 VSUPCAP Supply Voltage, Digital Decoupling Circuitry
10 29 36
45 52
V33 Supply Voltage, Digital Circuitry
59 69 76 AVCC Analog Voltage
13 SCL I
2
C Bus Clock
14 SDA I
2
C Bus Data
15 RESQ Reset Input
16 TEST Test Pin
17 VGAV VGAV Input
18 YCOEQ Y/C Output Enable Input
19 23 FFIE NC
24 CLK20 Main Clock Output
27 LLC2 Clock Output
28 LLC1 NC
31 34
37 40 Y0 Y7 YUV signal output (Digital ITU-R656 format)
41 44
47 50 C0 C7 Digital chromatic signal output
53 INTLC Interlace scan control output (0-odd,1-even)
54 AVO Active Video Output
55 FSY/HC NC
56 MSY/HS Horizontal Sync Pulse output
57 VS Vertical Sync Pulse
58 FPDAT NC
60 CLK5 5 MHz Clock Output
61 NC NC
62 XTAL1 20.25M Analog Crystal Input
63 XTAL2 20.25M Analog Crystal Output
66 VRT Reference Voltage Top, Analog
67 I
2
CSEL I
2
C Bus Address Select
70 VOUT Analog Video Output
71 CIN Chroma / Analog Video 5 Input
72 VIN1 Video 1 Analog Input
73 VIN2 Video 2 Analog Input
74 VIN3 Video 3 Analog Input
78 VREF Reference Voltage Top
79 FB1IN Fast Blank Input
VPC3230 Block Diagram