Circuit Descriptions, Abbreviation List, and IC Data Sheets
EN 113A02U AA 9.
KEYBOARD Input line: carries the voltage value of the corresponding tact
switch on TOP-control or FRONT-control keypad
L Left audio channel
L/L' Monochrome TV system. Sound carrier distance is 6.5 MHz. L' is
Band I, L is all bands except for Band I
Last Status The settings last chosen by the customer and read and stored in
RAM or in the NVM. They are called at startup of the set to
configure it according to the customer's preferences
LATAM Latin America
LCD Liquid Crystal Display
L-CL_VLOUT REAR CINCH stereo output
LED Light Emitting Diode
LFE Low Frequency Enhancement audio channel
L-FRONT-IN EXT3 stereo input
LIGHT-
SENSOR
Ambient light intensity signal.
LINE DRIVE Line drive signal (for the Line transistor)
LINEDRIVE1 Horizontal (line) deflection drive signal.
LNA Low Noise Adapter / Low Noise Amplifier
LOT Line Output Transformer
LPD LG.Philips Displays
LS Loudspeaker
Ls, Rs Left surround and Right surround channel (audio)
LSP Large signal panel
Lt, Rt Left total and Right total in case of a Dolby ProLogic encoded
signal (audio)
LTI Luminance Transient Improvement
LTP Luminance Transient Processor
LUT Look Up Table
LVDS Low Voltage Differential Signalling, data transmission system for
high speed and low EMI communication.
M/N Monochrome TV system. Sound carrier distance is 4.5 MHz
Mb/s Mega bits per second
MCS Multi Channel Sound: refers to Dolby Pro Logic Surround in A02
ADOC
MDO Mode control data output
MIPS Microprocessor without Interlocked Pipeline-Stages. A RISC-
based microprocessor.
Mips Million instructions per second
MMI Multi Media Interface
MOSFET Metal Oxide Semiconductor Field Effect Transistor
MPEG Motion Pictures Experts Group
MPIF Multi Platform InterFace (Part of Salsa chipset, sister-chip of
ADOC IC)
MPIP Multi Picture in Picture: commercial feature showing several
frozen or moving pips
MPX MultiPleX
MSP Multi-standard Sound Processor: ITT sound decoder
MUTE MUTE Line
NAFTA North American Free Trade Area (NAFTA & USA are used
interchangeable)
NC Not Connected
NDF No vertical Deflection: vertical fly back protection
NHF No Horizontal deflection: horizontal fly back protection
NICAM Near Instantaneously Companded Audio Multiplexing. This is a
digital sound system, mainly used in Europe.
NTC Negative Temperature Coefficient, non-linear resistor
NTSC National Television Standard Committee. Colour system mainly
used in North America and Japan. Colour carrier NTSC M/N=
3.579545 MHz, NTSC 4.43= 4.433619 MHz (this is a VCR norm,
it is not transmitted off-air)
NVM Non Volatile Memory: IC containing data such as alignments,
stations
O/C Open Circuit
OB Option Byte
OC Open Circuit
ON/OFF LED On/Off control signal for the LED
ON/STBY On/Standby
ON-OFF-LED Active-LOW control line. Logic LOW = red LED on, HIGH = red
LED off.
OP Option Byte
OSD On Screen Display
P50 Project 50: communication protocol between TV and peripherals
PAL Phase Alternating Line. Colour system mainly used in West
Europe (colour carrier= 4.433619 MHz) and South America
(colour carrier PAL M= 3.575612 MHz and PAL N= 3.582056
MHz)
PC Personal Computer
Abbreviation Description
PCB Printed Circuit Board (same as "PWB")
PCM Pulse Code Modulation
PILOT Pilot Signal
PIP Picture In Picture
PLL Phase Locked Loop. Used for e.g. FST tuning systems. The
customer can give directly the desired frequency
POR Power On Reset, signal to reset the microprocessor
POR_FLASH Signal that informs the micro controller (painter) that set will switch
off
Progressive
Scan
Scan mode where all scan lines are displayed in one frame at the
same time, creating a double vertical resolution.
PTC Positive Temperature Coefficient, non linear resistor
PTP Picture Tube Panel
PWB Printed Wiring Board (same as "PCB")
PWM Pulse Width Modulation
QSS Quasi Split Sound
R Right audio channel
RRed
RAM Random Access Memory
RC Remote Control transmitter
RC5 Remote Control system 5, the signal from the remote control
RC5 / RC6 Signal protocol from the remote control receiver
RDS Radio Data System
RESET RESET signal
RF Real Flat / Radio Frequency
RGB Red, Green, and Blue. The primary colour signals for TV. By
mixing levels of R,G, and B, all colours (Y/C) are reproduced.
RGBHV Red, Green, Blue, Horizontal sync, and Vertical sync
RISC Reduced Instructions Set Computer
RMS Root Mean Square value
ROM Read Only Memory
S Surround channel or mono surround channel (audio)
S/C Short Circuit
S/PDIF Sony Philips Digital InterFace
SALSA System Application for Low Segment of Analogue TV
SAM Service Alignment Mode
SAP Second Audio Program
SAW Surface Acoustics Wave
SC SandCastle: two-level pulse derived from sync signals / SCART
SCART Syndicat des Constructeurs d'Appareils Radiorecepteurs et
Televisieurs
SCAVEM Scan Velocity Modulation
SCL Serial Clock I2C
SCL-F CLock Signal on Fast I2C bus
SD Standard Definition
SDA Serial Data I2C
SDA-F Data Signal on Fast I2C bus
SDAM Service Default / Alignment Mode
SDRAM Synchronous DRAM
SECAM SEequence Couleur Avec Memoire: Colour system mainly used in
France and East Europe. Colour carriers= 4.406250 MHz and
4.250000 MHz
SEL Control signal
SIF Sound Intermediate Frequency
SIMM Single In-line Memory Module: 80-fold connector between LSP
and SSB
SL Audio Surround Left
SLDP Smart Local Dooming Prevention (HW and SW)
SMC Surface Mounted Compoments
SMPS Switched Mode Power Supply
SND SouND
SNERT Synchronous No parity Eight bit Reception and Transmit
SOG Sync On Green
SOPS Self Oscillating Power Supply
SOUND-
ENABLE
Control line to do hardware mute or un-mute of loudspeakers.
SR Audio Surround Right
SRAM Static RAM
SS Small Screen
ST_BY Standby
STANDBY
(POR)
Signal coming from Main Supply informing the supply is switching
off
STATUS Status signal from pin 8 on SCART connector
STBY Standby
SURR Surround (mono) signal
SVHS Super Video Home System
Abbreviation Description
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