Circuit Descriptions, Abbreviation List, and IC Data Sheets
EN 32
SK5.1L CA
9.
can directly provide the desired
frequency
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 (resistance increases if
temperature increases)
PWB
Printed Wiring Board (also called PCB
or CBA)
QSS
Quasi Split Sound
R
Right audio channel / Red
RAM
Random Access Memory
RC
Remote Control transmitter
RC5 (6)
Remote Control system 5 (6), the
signal from the remote control receiver
RF
Real Flat (picture tube) or Radio
Frequency
RGB
Red, Green, and Blue colour space;
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
RMS
Root Mean Square value
ROM
Read Only Memory
SAP
Secondary Audio Program; Generally
used to transmit audio in a second
language
SAW
Surface Acoustic Wave
SC
SandCastle: two-level pulse derived
from sync signals
S/C
Short Circuit
SCL
Serial Clock signal on I
2
C bus
SD
Standard Definition
SDA
Serial Data line of I
2
C bus
SDRAM
Synchronous DRAM
SIF
Sound Intermediate Frequency
SMC
Surface Mounted Component
SMD
Surface Mounted Device
SMPS
Switched Mode Power Supply
SND
SouND
SRAM
Static RAM
STBY
STandBY
SVHS
Super Video Home System
TBD
To Be Defined
TXT
Teletext; TXT is a digital addition to
analogue TV signals that contain
textual and graphical information (25
rows x 40 columns). The information is
transmitted within the first 25 lines
during the Vertical Blank Interval (VBI)
µC
Microcontroller
UOC
Ultimate One Chip
µP
Microprocessor
UV
Colour difference signals
V
V_sync
V-BAT
Main supply for deflection (usually 141
V)
VA
Vertical Acquisition
VBI
Vertical Blanking Interval; Time during
which the video signal is blanked when
going from bottom to top of the display
VCR
Video Cassette Recorder
VGA
Video Graphics Array
VIF
Video Intermediate Frequency
WE
Write Enable control line
WST
World System Teletext
XTAL
Quartz crystal
Y
Luminance signal
9.4
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.
