Ic Data Sheets - Philips A02E Service Manual

Circuit Descriptions, Abbreviation List, and IC Data Sheets
Abbreviation Description
THD Total Harmonic Distortion
TILT PWM Output signal (variable DC level) to control the picture tilt
from the DOP block of the ADOC.
Trinorma Video standard, combination of PAL N, PAL M, NTSC M
TXT Teletext
TXTSW Teletext switch
U_100 U from Feature Box
UART Universal Asynchronous Receiver Transmitter
UBE Ultra Bass Enhancement
uC Micro controller
UI User Interface
UOC Ultimate One Chip
uP Microprocessor
UV Colour difference signals
V V_sync
V_100 V from Feature Box
V_2FH Vertical sync input for the 2fH source.
V_A50 Vertical Acquisition 1fH
V_AMP Vertical Amplitude DAC output
V_BAT Main supply for deflection (usually 141 V)
V_D100 Vertical Drive 2fH: vertical sync pulse from deflection
V_DNEG One of the symmetrical drive signals for the DC frame output
stage.
V_DPOS One of the symmetrical drive signals for the DC frame output
stage.
V_OSD Vertical OSD
VA Vertical Acquisition
VBI Vertical Blank Interval
V-chip Violence chip
VCR Video Cassette Recorder
VD Vertical Drive: vertical sync pulse coming from the feature box
VDS Virtual Dolby Surround
VERT Vertical Output pulse
VESA Video Electronics Standards Association
VGA Video Graphics Array: 640x480 (4:3)
VGND Video ground
VGUARD Vertical guard voltage
VIF Video Intermediate Frequency
VL Variable Level out: processed audio output toward external
amplifier
VMEM Voltage supplied for EEPROM
VMICRO Power supply for micro controller
VOL Volume
VSYNC Pulse derived of 530 s-circuit behind the HOP, to vertically
synchronize the Painter
WD Watch Dog
WE-NVM NVM write enable control line.
WS Wide Screen
WSS Wide Screen Signaling, used by broadcasters to transmit e.g.
PALPLUS and Aspect Ratio
WST World System Teletext
WXGA 1280x768 (15:9)
WYSIWYR What You See Is What You Record: record selection that follows
main picture and sound
XGA Extended Graphics Array: 1024x768 (4:3)
XTAL Quartz crystal
Y Luminance signal
YC (or Y/C) Luminance (Y) and Chrominance (C) signal (analogue video
encoding format)
YPbPr Component video (Y= Luminance, Pb/ Pr= Colour difference
signals)
YUV Component video

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). This is not
applicable to this manual.
A02E 9. EN 107