Yamaha DRX-2 Service Manual page 117

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Digital Board Chrysalis
ADC:Analog to Digital Converter
DAC:Digital to Analog Converter
DENC:Digital (Video) Encoder (Video DAC)
DV: Digital Video (Camcorder)
EF: Emitter Follower
OSD:On-Screen Display
VIP:Video Input Processor (Video ADC)
2Fh: Progressive scan video
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 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
DRX-2
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 output
LPS
Link power status input
LREQ
Link request input
MA (0:10)
Page 117

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