Philips DVDR75/001 Service Manual page 245

Circuit-, IC descriptions and list of abbreviations
LKON ........................... Link-on signal output
LPS .............................. Link power status input
LREQ ........................... Link 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
Divio 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 Micro-
controller 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 ....................... Audio Word Select
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 and
48kHz audio
DVDR70 & DVDR75/0x1
APWM.......................... PWM signal for audio PLL
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
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
ISPN............................. In System Programming signal (used
for programming IC7802)
LKON ........................... Link-on signal output
LPS .............................. Link power status input
LREQ ........................... Link request input
MA(0:10) ...................... SDRAM adress lines of Link+Codec
IC7431
MCAS........................... SDRAM column address strobe signal
MCLK ...........................
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
9. EN 245