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.
Содержание HLT-3220
Страница 16: ...SERVICE MANUAL PAGE 16 DISASSEMBLY PROCEDURE 5 2 LCD Moul ...
Страница 20: ...SERVICE MANUAL PAGE 20 CIRCUIT DESCRIPTIONS 3 Pin configuration Reference line The left side The right side ...
Страница 21: ...SERVICE MANUAL PAGE 21 CIRCUIT DESCRIPTIONS 3 1 Pin configuration The left side ...
Страница 22: ...SERVICE MANUAL PAGE 22 CIRCUIT DESCRIPTIONS 3 2 Pin configuration The right side ...
Страница 23: ...SERVICE MANUAL PAGE 23 CIRCUIT DESCRIPTIONS 4 Pin Functions General Interface Pins MCU CPU interface Pins ...
Страница 24: ...SERVICE MANUAL PAGE 24 CIRCUIT DESCRIPTIONS SDRAM SGRAN interface Pins ...
Страница 25: ...SERVICE MANUAL PAGE 25 CIRCUIT DESCRIPTIONS 1 Main Input Interface input pins for Main stream ...
Страница 26: ...SERVICE MANUAL PAGE 26 CIRCUIT DESCRIPTIONS 2 Main Input Interface input pins for Main stream ...
Страница 27: ...SERVICE MANUAL PAGE 27 CIRCUIT DESCRIPTIONS Sub Input Interface input pins for Sub stream ...
Страница 28: ...SERVICE MANUAL PAGE 28 CIRCUIT DESCRIPTIONS Display output interface ...
Страница 30: ...SERVICE MANUAL PAGE 30 CIRCUIT DESCRIPTIONS Power ground pins ...
Страница 32: ...SERVICE MANUAL PAGE 32 CIRCUIT DESCRIPTIONS 3 Pin configuration Pin configuration PMQFP64 Logic symbol ...
Страница 33: ...SERVICE MANUAL PAGE 33 CIRCUIT DESCRIPTIONS 4 Pin Port Functions ...
Страница 35: ...SERVICE MANUAL PAGE 35 CIRCUIT DESCRIPTIONS 2 Block Diagram ...
Страница 36: ...SERVICE MANUAL PAGE 36 CIRCUIT DESCRIPTIONS 3 Pin configuration ...
Страница 37: ...SERVICE MANUAL PAGE 37 CIRCUIT DESCRIPTIONS 4 Pin Functions ...
Страница 39: ...SERVICE MANUAL PAGE 39 CIRCUIT DESCRIPTIONS 2 Block Diagram ...
Страница 40: ...SERVICE MANUAL PAGE 40 CIRCUIT DESCRIPTIONS 3 Pin configurations ...
Страница 41: ...SERVICE MANUAL PAGE 41 CIRCUIT DESCRIPTIONS 4 1 Pin Functions ...
Страница 42: ...SERVICE MANUAL PAGE 42 CIRCUIT DESCRIPTIONS 4 2 Pin Functions ...
Страница 43: ...SERVICE MANUAL PAGE 43 CIRCUIT DESCRIPTIONS 4 3 Pin Functions ...
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Страница 47: ...SERVICE MANUAL PAGE 47 CIRCUIT DESCRIPTIONS 3 Pin configurations ...
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Страница 54: ...SERVICE MANUAL PAGE 54 TROUBLE SHOOTING ...
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Страница 63: ...SERVICE MANUAL PAGE 63 PCB LAYOUT 3 1 CONTROL PCB 1 TOP COMP PATTERN 2 BOTTOM COMP PATTERN ...
Страница 64: ...SERVICE MANUAL PAGE 64 PCB LAYOUT 3 1 Main PCB TOP COMP ...
Страница 65: ...SERVICE MANUAL PAGE 65 PCB LAYOUT 3 2 Main PCB TOP PATTEN ...
Страница 66: ...SERVICE MANUAL PAGE 66 PCB LAYOUT 3 3 Main PCB BOTTOM COMP ...
Страница 67: ...SERVICE MANUAL PAGE 67 PCB LAYOUT 3 4 Main PCB BOTTOM PATTEN ...
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