SITRONICS LCD-1502, Service Manual

Page: 28 / 40

Information of ICs
IC301(VPC3230)
Pin No. Pin Name Function Pin No. Pin Name Function
1 B1/CB1IN Blue1/Cb1 Analog Component Input 41 C7 Picture Bus Chroma (MSB)
2 G1/Y1IN Green1/Y1 Analog Component Input 42 C6 Picture Bus Chroma
3 R1/CR1IN Red1/Cr1 Analog Component Input 43 C5 Picture Bus Chroma
4 B2/CB2IN Blue2/Cb2 Analog Component Input 44 C4 Picture Bus Chroma
5 G2/Y2IN Green2/Y2 Analog Component Input 45 V
SUPC
Supply Voltage, Chroma Output Circuitry
6 R2/CR2IN Red2/Cr2 Analog Component Input 46 GND
C
Ground, Chroma Output Circuitry
7 ASGF
Analog Shield GND
F
47 C3 Picture Bus Chroma
8 FFRSTWIN FIFO Reset Write Input ** 48 C2 Picture Bus Chroma
9 V
SUPCAP
Digital Decoupling Circuiltry Supply
Voltage
49 C1 Picture Bus Chroma
10 V
SUPD
Supply Voltage, Digital Circuitry 50 C0 Picture Bus Chroma (LSB)
11 GND
D
Ground, Digital Circuitry 51 GND
SY
Ground, Sync Pad Circuitry
12 G
NDCAP
Digital Decoupling Circuitry GND 52 V
SUPSY
Supply Voltage, Sync pad Circuitry
13 SCL
1
2
C Bus Clock
53 INTLC Interlace Output
14 SDA
I
2
C Bus Data
54 AVO Active Video Output
15 RESQ Reset Input, Active Low 55 FSY/HC/HSYA
Front Sync/ Horizontal Clamp Pulse/
Front-End Horizontal Sync Output
16 TEST
Test Pin, connect to GND
D
56 MSY/HS Main Sync/Horizontal Sync Pulse
17 VGAV VGAV Input 57 VS Vertical Sync Pulse
18 YCOEQ Y/C Output Enable Input, Active Low 58 FPDAT/VSYA
Front-End/Back-End Data/Front-End
Vertical Sync Output **
19 FFIE FIFO Input Enable 59 V
STBY
Standby Supply Voltage
20 FFWE FIFO Write Enable 60 CLK5 CCU 5 MHz Clock Output
21 FFRSTW FIFO Rest Write/Read 61 NC Not connected
22 FFRE FIFO Read Enable 62 XTAL1 Analog Crystal Input
23 FFOE FIFO Output Enable 63 XTAL2 Analog Crystal Output
24 CLK20 Main Clock Output 20.25MHz 64 ASGF
Analog Shield GND
F
25 GND
PA
Pad Decoupling Circuitry GND 65 GND
F
Ground, Analog Front-End
26 V
SUPPA
Pad Decoupling Circuitry Supply Voltage 66 VRT Reference Voltage Top, Analog
27 LLC2 Double Clock Output 67 I2CSEL
I
2
C Bus Address Select
28 LLC1 Clock Output 68 ISGND
Signal Ground for Analog Input, Connect
to GND
F
29 V
SUPLLC
Supply Voltage, LLC Circuitry 69 V
SUPF
Supply Voltage, Analog Front-End
30 GND
LLC
Ground, LLC Circuitry 70 VOUT Analog Video Output
31 Y7 Picture Bus Luma (MSB) 71 CIN Chroma/ Analog Video 5 Input
32 Y6 Picture Bus Luma 72 VIN1 Video 1 Analog Input
33 Y5 Picture Bus Luma 73 VIN2 Video 2 Analog Input
34 Y4 Picture Bus Luma 74 VIN3 Video 3 Analog Input
35 GND
Y
Ground, Luma Output Circuitry 75 VIN4 Video 4 Analog Input
36 V
SUPY
Supply Voltage, Luma Output Circuitry 76 V
SUPAI
Supply Voltage, Analog Component Inputs
37 Y3 Picture Bus Luma 77 GND
A1
Ground, Analog Component Inputs Front-
End
38 Y2 Picture Bus Luma 78 VREF
Reference Voltage Top, Analog
Component
39 Y1 Picture Bus Luma 79 FB1IN Fast Blank Input
40 Y0 Picture Bus Luma (LMB) 80 AISGND
Signal Ground for Analog Component
Inputs, connect to GND
AI
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