Philips DVDR615 Service Manual page 163

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Circuit-, IC descriptions and list of abbreviations
A_MUTE Audio Mute
ABCK Audio Bit Clock
AD (1:10) Address bus lines for Host I/F of
Link+Codec IC7431
AEMP1 PCM1 emphasis ON/OFF for PCM1
output
AFS1 Audio sampling frequency indication
signal
ALRCLK Audio Word Select
AMCLK44 11.2896MHz (=256 * 44.1 kHz) audio
master clock signal for 44.1 kHz audio
AMCLK48 12.288MHz (=256 * 48 kHz) audio
master clock signal for 32 kHz and 48
kHz audio
APWM PWM signal for audio PLL
ASIC Application Specific Integrated Circuit
BUFENn_AUD Buffer Enable Audio
BUFENn_VID Buffer Enable Video
CLK27M_CON 27MHz Clock to Digital Board
CS Parallel interface chip select input of
Link+Codec IC7431
CTL (0:1) Link interface control lines
CTSN Clear to Send
D (0:15) Flash data lines of Link+Codec
IC7431
DCDi Directional Correlational
Deinterlacing. Circuitry that reduces
jaggies on diagonal edges when
deinterlacing video-sourced material.
DV_STATUS Interrupt pin for reading DV-status
HS_CLK Video clock input of Link+Codec
IC7431
INT Interrupt request output of Link+Codec
IC7431 (input to Micro-Controller)
IOR Parallel interface IO read control input
of Link+Codec IC7431
ISPN In System Programming signal (used
for programming IC7802)
LKON Link-on signal outputLPSLink power
status inputLREQLink request input
MA (0:10) SDRAM address lines of Link+Codec
IC7431
MCAS SDRAM column address strobe signal
MCLK SDRAM clock signal
MD (0:15) SDRAM data lines of Link+Codec
IC7431
MRAS SDRAM row-address strobe signal
MWE SDRAM write enable signal
PCM1 Audio Serial Data Output of
Link+Codec IC7431
PCM1_NEW 'MSB justified' to I2S converted audio
serial data; audio serial data input of
audio DAC UDA1334A
PD (0:15) Data bus lines for Host I/F of
Link+Codec IC7431
PHY_D (0:7) Data bus connection between PHY
and LINK device
RESETn DVIO board reset
RESET_FM Reset signal driven by Flashmaster
programming device
RESTB Reset input of Link+Codec IC7431
RTSN Request to Send
RWZ Parallel interface read/write control
input of Link+Codec IC7431
RXD Receive Data
SCLK Link control output clock
TXD Transmit Data
VPP +10V switchable programming voltage
of microcontroller
YUV (0:7) Digital Video
FEBE Board (Frontend part)
ADC Analogue to Digital Converter
ADIP ADdress In Pre-groove
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DVDR615/69
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
2
I C 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 I
SCLK Audio serial bit clock
SDA Serial Data I
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
9. EN 163
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