Philips HDRW720 Service Manual page 197

Circuit-, IC descriptions and list of abbreviations
3V3_LINK +3V3 Power supply for Link+Codec
IC7431
3V3_F +3V3 Power supply for optional Flash
memory IC7432
3V3_RAM +3V3 Power supply for SDRAM
IC7430
3V3_uP +3V3 Power supply for Micro-
controller IC7802
3V3_32kHz +3V3 Power supply for audio format
adaptation circuitry IC7507 and
IC7508
3V3_AC +3V3 Power supply for audio system
clock generator IC7605 and IC7606
+5V +5V Power supply
5V_PLL +5V Power supply for VCO of audio
PLL IC7604
A (1:17) Flash address lines of uPD72893
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
HDRW720/0x, DVDR725H/0x
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
DVIO 1.8 Board
2V5 +2V5 Power supply for Link+Codec
IC7431
3V3 +3V3 Power supply
3V3_A +3V3 Analog power supply for PHY
IC7400
3V3_D +3V3 Digital power supply for PHY
IC7400
3V3_DLY +3V3 Power supply for IC7500
3V3_LINK +3V3 Power supply for Link+Codec
IC7431
3V3_F 3V3 Power supply for optional Flash
memory IC7432
3V3_RAM +3V3 Power supply for SDRAM
IC7430
3V3_uP +3V3 Power supply for Microcontroller
IC7802
3V3_32kHz +3V3 Power supply for audio format
adaptation circuitry IC7507 & IC7508
3V3_AC +3V3 Power supply for audio system
clock generator IC7605 & IC7606
+5V +5V Power supply
5V_PLL 5V Power supply for VCO of audio PLL
IC7604
A(1:17) Flash adress lines of uPD72893
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
AMCLK44 11,2896MHz (=256*44.1kHz) audio
master clock signal for 44.1kHz audio
AMCLK48 12,288MHz (=256*48kHz) audio
master clock signal for 32kHz
and48kHz audio
APWM PWM signal for audio
PLLBUFENn_AUD Buffer Enable
AudioBUFENn_VID Buffer Enable
VideoCLK27M_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
DV_STATUS Interupt 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
9. EN 197