Circuit Descriptions, Abbreviation List, and Data Sheets
EN 46 VAD80419.
9.9 Abbreviation list
ADC Analogue to Digital Converter
ADIP ADdress In Pre-groove
AGC Automatic Gain Control
CD Compact Disc
CLV Constant Linear Velocity
DROPPI Dvd Rewritable Opu Pre-Processor IC
AM Amplitude Modulation
BE Basic Engine
ComPair Computer aided rePair
CD-DA CD Digital Audio
CS Chip Select
DAC Digital to Analogue Converter
DAIO Digital Audio Input Output
DENC Digital Encoder
DFU Direction For Use: description for the
end user
DNR Dynamic Noise Reduction
DRAM Dynamic RAM
DSD Direct Stream Digital
DSP Digital Signal Processing
DVD Digital Versatile Disc
EEPROM Electrical Erasable Programmable
ROM
EFM Eight to Fourteen bit Modulation
FDS Full Diagnostic Software
HF High Frequency
I2C Integrated Ic bus (signals at 5V level)
I2S Integrated Ic Sound bus (signals at
3.3V level)
IC Integrated Circuit
IF Intermediate Frequency
IRQ Interrupt ReQuest
LADIC LAser Driver IC
LLD Loss Less Decoder
LPCM Linear Pulse Code Modulation
LRCLK Left/Right CLocK
MACE Mini All Cd Engine
MPEG Motion Pictures Experts Group
NC Not Connected
NVM Non Volatile Memory: IC containing
DVD related data e.g. alignments
OPC Optimum Power Calibration
OPU Optical Pickup Unit
PCB Printed Circuit Board (see PWB)
PCS Position Control Sledge
PLL Phase Locked Loop
PCM Pulse Code Modulation
PCM_CLK Audio system clock for DAC
PCM_OUTx Audio serial output data
PSU Power Supply Unit
PWB Printed Wiring Board (see PCB)
RAM Random Access Memory
RGB Red, Green and Blue colour space
ROM Read Only Memory
RF Radio Frequency
S2B Serial to Basic engine, communication
bus between host- and servo
processor
SCL Serial Clock I2C
SCLK Audio serial bit clock
SDA Serial Data I2C
SDRAM Synchronous DRAM
SMC Surface Mounted Components
S/PDIF Sony Philips Digital InterFace
SPIDRE Signal Processing Ic for Dvd
REwritable
SRAM Static Random Access Memory
STBY STandBY
SVCD Super Video CD
SW SoftWare
THD Total Harmonic Distortion
TTL Transistor Transistor Logic (5V logic)
uP Microprocessor
VCD Video CD
Y/C Luminance (Y) and Chrominance (C)
signal
YUV Component video
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