Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.
H-DVI
H_sync from DVI to RGB converter
chip
HFB
Horizontal Flyback Pulse: horizontal
sync pulse from large signal deflection
HIP
High-end video Input Processor
(TDA9320): video and chroma
decoder.
HOP
High-end video Output Processor
(TDA9330): video, sync, and
geometry controller
H_OUT
H_sync output of the module
HP
HeadPhone
Interlaced
Scan mode where two fields are used
to form one frame. Each field contains
half the number of the total amount of
lines. The fields are written in "pairs",
causing line flicker
IROM
Internal ROM (inside uP)
Last Status
The settings last chosen by the
customer and read and stored in RAM
or in the NVM. They are called at start-
up of the set to configure it according
to the customer's preferences
LCD
Liquid Crystal Display
LDP
Line Deflection Protection signal,
derived from the EW current and
voltage
LED
Light Emitting Diode
LINE-DRIVE
LINE DRIVE signal (for the Line
transistor)
LNA
Low Noise Adapter / Low Noise
Amplifier
LO
Local Oscillator
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)
MPX
MultiPleX
MSP
Multi-standard Sound Processor: ITT
sound decoder
MUTE
MUTE Line
NC
Not Connected
NVM
Non Volatile Memory: IC containing
TV related data such as alignments
O/C
Open Circuit
OSD
On Screen Display
OTC
On screen display Teletext and
Control; also called Artistic (SAA5800)
OTP
One Time Programmable
P50
Project 50: communication protocol
between TV and peripherals
PA
Power Amplifier
PCB
Printed Circuit Board
PICNIC
Peripheral Integrated Combined
Network IC (SAA4978): main IC for
100 Hz features and feature
processing
PIP
Picture In Picture
Progressive Scan
Scan mode where all scan lines are
displayed in one frame at the same
time, creating double vertical
resolution.
PTP
Picture Tube Panel
PWM
Pulse Width Modulation
RAM
Random Access Memory
R-TXT
Red TeleteXT
RC
Remote Control
RC5 / RC6
Signal protocol from the remote
control receiver
RDS
Radio Data System
RESET
RESET signal
ROM
Read Only Memory
SAM
Service Alignment Mode
S
Surround channel or mono surround
channel (audio)
SC
SandCastle: two-level pulse derived
from sync signals
S/C
Short Circuit
SCAVEM
SCAn VElocity Modulation
SCL-F
CLock Signal on Fast I2C bus
SD
Standard Definition
SDA-F
DAta Signal on Fast I2C bus
SIF
Sound Intermediate Frequency
SNERT
Synchronous No parity Eight bit
Reception and Transmit
SPDIF
Sony Philips Digital Interface
SSP
Small Signal Panel
STBY
STandBY
SW
SubWoofer
TXT
TeleteXT
UART
Universal Asynchronous Receiver
Transmitter
uP
Microprocessor
U_100
U from Feature Box
V_100
V from Feature Box
V_A50
Vertical Acquisition 1fH
V_BAT
Main supply for deflection (usually 141
V)
V_D100
Vertical Drive 2fH: vertical sync pulse
from deflection
V_DPOS
One of the symmetrical drive signals
for the DC frame output stage.
V_DNEG
One of the symmetrical drive signals
for the DC frame output stage.
VFB
Vertical Flyback Pulse: vertical sync
pulse coming from the feature box
VL
Variable Level out: processed audio
output toward external amplifier
WYSIWYR
What You See Is What You Record:
record selection that follows main
picture and sound
X-RAY-PROT
A PROTection signal against
excessive X-RAY radiation
XROM
External ROM (outside uP)
XTAL
Quartz crystal
Y_100
Y from Feature Box
Y-G
Luminance or Green signal with sync
Y_OUT
Luminance-signal to HOP IC
YUV-Feat
The YUV input for the main picture,
coming from the Feature box or the
HIP
V
V_sync to the module