Ic Data Sheets - Philips LC4.1E Service Manual

EN 58 9. LC4.1E AB
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VCR
VGA
WD
WYSIWYR

9.11 IC Data Sheets

This section shows the internal block diagrams and pin layouts
of ICs that are drawn as "black boxes" in the electrical diagrams
(with the exception of "memory" and "logic" ICs).
9.11.1 Diagram A7, Type GM5221 (IC7401)
XTAL
Clock
Generation
Resetn
Reset CCT
Triple
ADC&PLL
Analog
Schmitt
YUV/RGB
Tri gg er
DDC2Bi
Ultra-
Reliable
DVI Rx
DVI
HDCP
DDC2Bi
422 to 444
BT 656
Conversion
Test
Pattern
Generator
Circuit Descriptions, Abbreviation List, and IC Data Sheets
Variable Level out: processed audio
output toward external amplifier
Video Cassette Recorder
Video Graphics Array
Watch Dog
What You See Is What You Record:
record selection that follows main
picture and sound
gm5221 Functional Block Diagram
Keypad Sensing
NVRAM GPIO
Temp Sensor
3 X General-
Purpose ADC
Serial GPIO
Master
Figure 9-5 Internal Block diagram
XTAL
Y
YPbPr
Y/C
Y-OUT
YUV
X86
Micro-controller
On-chip
RAM / ROM
ACM-II
uv
Chroma
Adjust
ACC
Y
Luma
Shaping
Histogram
High-light Window
Quartz crystal
Luminance signal
Component video (Y= Luminance, Pb/
Pr= Colour difference signals)
Luminance (Y) and Chrominance (C)
signal
Luminance-signal
Component video
Parallel or Serial
EEPROM
4 X
External
PWM
ROM I/F
OSD
Controller
Display 2 X
LVDS
Timing
Tx
Control
E_14520_049.eps
011104
Back-light
Audio
LVDS
Panel I/F