SERVICE MANUAL
PAGE:
31
CIRCUIT DESCRIPTIONS
2. MCU SECTION.
Device:
SDA55XX
Features: Built-in teletext decoder.
8051 compatible.
Internal ROM type.
1) Description
The device provides an integrated general-purpose, fully 8051-compatible Microcontroller
with television specific hardware features. Microcontroller has been enhanced to provide
powerful features such as memory banking, data pointers and additional interrupts etc.
Internal XRAM consists of up to 16 Kbytes. Device has an internal ROM of up to 128
Kbytes.
The SDA 55xx supports a wide range of standards including PAL, NTSC and contains a
digital slicer for Teletext and Closed Caption.
Fabricated in an advanced CMOS process, the SDA55XX is provided in PMQFP64 SMD
type plastic package.
2) Block Diagram.
Summary of Contents for HLT-3220
Page 16: ...SERVICE MANUAL PAGE 16 DISASSEMBLY PROCEDURE 5 2 LCD Moul ...
Page 21: ...SERVICE MANUAL PAGE 21 CIRCUIT DESCRIPTIONS 3 1 Pin configuration The left side ...
Page 22: ...SERVICE MANUAL PAGE 22 CIRCUIT DESCRIPTIONS 3 2 Pin configuration The right side ...
Page 24: ...SERVICE MANUAL PAGE 24 CIRCUIT DESCRIPTIONS SDRAM SGRAN interface Pins ...
Page 25: ...SERVICE MANUAL PAGE 25 CIRCUIT DESCRIPTIONS 1 Main Input Interface input pins for Main stream ...
Page 26: ...SERVICE MANUAL PAGE 26 CIRCUIT DESCRIPTIONS 2 Main Input Interface input pins for Main stream ...
Page 27: ...SERVICE MANUAL PAGE 27 CIRCUIT DESCRIPTIONS Sub Input Interface input pins for Sub stream ...
Page 28: ...SERVICE MANUAL PAGE 28 CIRCUIT DESCRIPTIONS Display output interface ...
Page 30: ...SERVICE MANUAL PAGE 30 CIRCUIT DESCRIPTIONS Power ground pins ...
Page 33: ...SERVICE MANUAL PAGE 33 CIRCUIT DESCRIPTIONS 4 Pin Port Functions ...
Page 35: ...SERVICE MANUAL PAGE 35 CIRCUIT DESCRIPTIONS 2 Block Diagram ...
Page 36: ...SERVICE MANUAL PAGE 36 CIRCUIT DESCRIPTIONS 3 Pin configuration ...
Page 37: ...SERVICE MANUAL PAGE 37 CIRCUIT DESCRIPTIONS 4 Pin Functions ...
Page 39: ...SERVICE MANUAL PAGE 39 CIRCUIT DESCRIPTIONS 2 Block Diagram ...
Page 40: ...SERVICE MANUAL PAGE 40 CIRCUIT DESCRIPTIONS 3 Pin configurations ...
Page 41: ...SERVICE MANUAL PAGE 41 CIRCUIT DESCRIPTIONS 4 1 Pin Functions ...
Page 42: ...SERVICE MANUAL PAGE 42 CIRCUIT DESCRIPTIONS 4 2 Pin Functions ...
Page 43: ...SERVICE MANUAL PAGE 43 CIRCUIT DESCRIPTIONS 4 3 Pin Functions ...
Page 44: ...SERVICE MANUAL PAGE 44 CIRCUIT DESCRIPTIONS 4 4 Pin Functions ...
Page 45: ...SERVICE MANUAL PAGE 45 CIRCUIT DESCRIPTIONS 4 5 Pin Functions ...
Page 47: ...SERVICE MANUAL PAGE 47 CIRCUIT DESCRIPTIONS 3 Pin configurations ...
Page 48: ...SERVICE MANUAL PAGE 48 CIRCUIT DESCRIPTIONS 4 Pin Functions ...
Page 49: ...SERVICE MANUAL PAGE 49 CIRCUIT DESCRIPTIONS ...
Page 50: ...SERVICE MANUAL PAGE 50 CIRCUIT DESCRIPTIONS ...
Page 51: ...SERVICE MANUAL PAGE 51 TROUBLE SHOOTING ...
Page 52: ...SERVICE MANUAL PAGE 52 TROUBLE SHOOTING ...
Page 53: ...SERVICE MANUAL PAGE 53 TROUBLE SHOOTING ...
Page 54: ...SERVICE MANUAL PAGE 54 TROUBLE SHOOTING ...
Page 55: ...SERVICE MANUAL PAGE 55 TROUBLE SHOOTING ...
Page 63: ...SERVICE MANUAL PAGE 63 PCB LAYOUT 3 1 CONTROL PCB 1 TOP COMP PATTERN 2 BOTTOM COMP PATTERN ...
Page 64: ...SERVICE MANUAL PAGE 64 PCB LAYOUT 3 1 Main PCB TOP COMP ...
Page 65: ...SERVICE MANUAL PAGE 65 PCB LAYOUT 3 2 Main PCB TOP PATTEN ...
Page 66: ...SERVICE MANUAL PAGE 66 PCB LAYOUT 3 3 Main PCB BOTTOM COMP ...
Page 67: ...SERVICE MANUAL PAGE 67 PCB LAYOUT 3 4 Main PCB BOTTOM PATTEN ...
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