Circuit Descriptions, Abbreviation List, And Ic Data Sheets - Philips 32PF9968/10 Service Manual

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EN 136 9. Q523.1U LA

9. Circuit Descriptions, Abbreviation List, and IC Data Sheets

Index of this chapter:
9.1 Introduction
9.2 LCD Power Supply
9.3 On-Board Platform Supply
9.4 On-board DC/DC Converters
9.5 Front-End
9.6 PNX85xx
9.7 Back-end
9.8 Ambient Light
9.9 Abbreviation List
9.10 IC Data Sheets
Notes:
• Only new circuits (circuits that are not published recently)
are described.
• Figures can deviate slightly from the actual situation, due
to different set executions.
• For a good understanding of the following circuit
descriptions, please use the wiring, block (chapter 6) and
circuit diagrams (chapter 7). Where necessary, you will find
a separate drawing for clarification.
9.1 Introduction
This chassis (development name "TV520") is the successor of
the Jaguar platform (BJx.x and FJx.x chassis).
The platform is built around the PNX85xx "System on Chip"
(SoC), which performs the video and audio processing. The
SoC integrates the functionality of ICs that were previously
used in the Jaguar platform: PNX2015 (AVIP/COLUMBUS),
PNX3000 (MPIF), TDA9975 (HDMI receiver), T6TE0TBG
(SPIDER), and PNX8550 (VIPER).
Remaining additional key components in this chassis are:
• CYCLONE FPGA 1080p (EP2C8F256C7N) for US region.
• PNX5050 for EU region.
• PACIFIC 3 (T6TF4HFG).
9.1.1 Features
The main features for this chassis are:
• 1080p resolution @ 60 Hz (in some sets)
• Perfect Pixel HD Engine as the successor of Pixel Plus.
With this technology, each pixel of the incoming picture is
enhanced to better match the surrounding pixels, resulting
in a more natural picture. Artifacts and noise in all sources
from multimedia to standard TV to highly-compressed
high-definition (HD) are detected and reduced. This results
in a clean and razor sharp image.
• The introduction of LED AmbiLight.
• ClearLCD, a technology that uses scanning and backlight
dimming technology to reduce the motion blur on an LCD
screen, caused by the slow response time and the "sample
and hold" characteristic of LCD.
• Dynamic Frame Insertion (DFI) (in some sets) resulting in
a 1080p resolution @ 120 Hz, thus eliminating the film
flicker caused by the frame rate of 24 frames per second of
cinematic film.
• Digital Natural Motion (DNM) to compensate the judder
(perceived when watching a moving object on the screen),
caused as side-effect during frame insertion (DFI) as
described above.
9.1.2 TV520 Architecture Overview
For details about the chassis block diagrams refer to chapter
"Block diagrams, Test Point Overview, and Waveforms". An
Circuit Descriptions, Abbreviation List, and IC Data Sheets
overview of the TV520 architecture can be found in figure
"Architecture of TV520 platform".