Karaoke Circuit - Hitachi DV-P250E Bedienungsanleitung

KARAOKE CIRCUIT

(Only available at DVD-5500/DVD-5300 models)
When mic is connected to the mic input terminal, "KARAOKE" will be lighted on FL tube and mode will be
changed to Karaoke mode. Therefore, karaoke functions of keycon and vocal cancel may be used. When mic
is disconnected, karaoke mode is 'OFF'.
Signals output from MIC1 are input to IC2401 at pin 5, then pass through MIC amplifier, and output to MIC
volume RV1762 from pin 7. Afterwards it will be input again to IC2404 at pin 8, then pass through IC2404
internal signal analog/digital converter and output to IC1201 pin 171 from IC2404 pin 1. Similarly signals
output from MIC2 are input to IC2401 pin 3, then pass through MIC amplifier and output from pin 1 to MIC
volume RV1763. Then input again to IC2404 pin 5, then pass through IC2404 internal signal analog/digital
converter and output to IC1201 pin 171 from IC2404 pin 1,then to MIC1/MIC2 serial data(through IC1201
internal echo/MIC G.ETC signal process) and disc audio L/R signal (through path shift/vocal partnering/audio
G.edc signal process) mix,serial signal output to audio common circuit IC1501 pin 2 and IC1502 pin 2 from
IC1201 pin 161 and IC1201 pin 163.
EXPLAINATION:
1. MCLK(IC2404
4
2. SCLK(IC2404
2
3. LRCK(IC2404
3
16
pin): external clock input, from IC1201 pin
DVD:384*fs=384*48k=18.432MHz
CD/VCD:384*fs=384*44.1k=16.934MHz
pin): MIC audio bit clock, from IC1201 pin
DVD:18.432/8=2.304MHz
CD/VCD:16.934/8=2.1168MHz
pin): MIC1 and MIC2 L/Rclock, from IC1201 pin 172 to IC2404 pin 3.
DVD:48KHz
CD/VCD:44.1KHz
through buffer IC1505 to IC2404 pin 4.
169
to IC2404 pin 2.
173
Chapter 1