Philips SD-5.31SL, Service Manual

Page: 55 / 64

Circuit Descriptions, List of Abbreviations, and IC Data Sheets
EN 55 SD-5.31SL 9.
9.4
Abbreviation list
AC3 Older term for Dolby Digital
ADC Analogue to Digital Converter
ASD Architecture Standard Design
ATAPI AT Attachment Packet Interface
AM Amplitude Modulation
AV Audio Video
BE Basic Engine
BST Boundary Scan Testing, IC testing
method
ComPair Computer aided rePair
CD Compact Disc
CD-DA CD Digital Audio
CD-ROM CD Read Only Memory
CVBS Composite Video Blanking and Sync
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
DTS Digital Theatre Sound
DVD Digital Versatile Disc
DVD back-end DVD digital (MPEG, etc.) decoder part
DVD front-end DVD servo part (previously called
Basic Engine)
EEPROM Electrically Erasable and
Programmable Read Only Memory
EIDE Enhanced IDE
EFM Eight to Fourteen bit Modulation
EMC Electro Magnetic Compatibility
EMI External Memory Interface (STi55xx)
FFC Flat Foil Cable
FLASH Flash memory
HPF High Pass Filter
HW Hardware
I2C Integrated IC bus (signals at 5V level)
I2S Integrated IC Sound bus (signals at
3.3V level)
IC Integrated Circuit
IDE Integrated Drive Electronics
IF Intermediate Frequency
IO Input Output
IRQ Interrupt Request
JTAG Joint Test Action Group, a 5-pin
interface as outlined in standard IEEE
1149.1 providing boundary scan
testing (BST)
kbit (kb) 2^10 bit
kByte (kB) 2^20 Byte (1 Byte = 8 bit)
KOK Karaoke
LFE Low Frequency Effect (sub-woofer)
LLD Loss Less Decoder
LPCM Linear Pulse Code Modulation
LRCLK Left/Right clock
LSB Least Significant Bit
LVTTL Low Voltage Transistor Transistor
Logic (3.3V logic)
MACE Mini All Compact Disc Engine
Mbit (Mb) 2^20 bit
MByte (MB) 2^20 Byte (1 Byte = 8 bit)
MLP Meridian Lossless Peaking
MPEG Motion Pictures Experts Group
MPEG1 MPEG standard used by VCD
MPEG2 MPEG standard used by DVD
MP3 Informal audio codex
MSB Most Significant Bit
NC Not Connected
NVM Non Volatile Memory: IC containing
TV related data e.g. alignments
OC Open Circuit
OPU Optical Pick-up Unit
OSD On Screen Display
PCB Printed Circuit Board (see PWB)
PCM Pulse Code Modulation
PCM_CLK Audio system clock for DAC
PCM_OUTx Audio serial output data
PS(U) Power Supply (Unit)
PWB Printed Wiring Board (see PCB)
RAM Random Access Memory
RGB Red, Green, and Blue colour space
ROM Read Only Memory
S2B Serial to Basic Engine, communication
bus between host- and servo
processor
SCL Serial Clock I2C
SCLK Audio serial bit clock
SCSI Small Computer System Interface
SDA Serial Data I2C
SDRAM Synchronous DRAM
S/PDIF Sony Philips Digital InterFace
SRAM Static RAM
STBY Standby
SVCD Super Video CD
SW Software
THD Total Harmonic Distortion
TTL Transistor Transistor Logic (5V logic)
UART Universal Asynchronous Receiver
Transmitter
uP Microprocessor
VCD Video CD
Y/C Luminance (Y) and Chrominance (C)
signal
YUV Luma and chroma video component (=
YCbCr)