Casio WK-1200 Manuel d'utilisateur télécharger pdf (Page 11)

— 10 —

FILTER BLOCK

Since the sound signals from the DAC are stepped waveforms, the filter block is added to smooth the

waveforms.

DAC (IC1: UPD6379GR)

The DAC receives 16-bit serial data output from the DSP. The data contains digital sound data of the

melody, chord, bass, and percussion for the right and left channels. The DAC converts the data into

analog waveforms and output them to each channel separately.

Synch signal

Data

Word clock

Bit clock

Data

Word clock

Bit clock

DSP

LSI2

HG51B277FB-1

DAC

IC1

UPD6379GR

CPU

LSI1

GT-913F

L OUT

R OUT

LRCK

CLK

WCKO

SCK1

LRCK

BCK

SINC

WCKI

BCKI

AVDD

2.2 K

AG AG

1 K

Q308 Q310

1 K

2700 PF

6.3 V220 µ

25C1740SS-TP-T

5600 PF

1 K

3.9 K

10 K

6.3 V100 µ

22 µF

0.015 µF

10 V22 µ

From DAC

To main volume

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 24 25

ELECTRONIC KEYBOARD 1
SPECIFICATIONS 2
CONTENTS 2
ELECTRICAL 3
About General MIDI 3
BLOCK DIAGRAM 4
CIRCUIT DESCRIPTION 5
POWER SUPPLY CIRCUIT 6
BUTTON MATRIX 6
RESET CIRCUIT 7
LCD BACKLIGHT 7
CPU (LSI1: GT-913F) 8
FILTER BLOCK 11
DAC (IC1: UPD6379GR) 11
ADJUSTMENT 13
MAJOR WAVEFORMS 14
PRINTED CIRCUIT BOARDS 15
SCHEMATIC DIAGRAMS 16
Sub PCB JCM730-MA2M 17
LCD Driver PCB JCM730-LCD1M 19
EXPLODED VIEW 21
PARTS LIST 22
8-11-10, Nishi-Shinjuku 25
Shinjuku-ku, Tokyo 160, Japan 25
Telephone: 03-3347-4926 25

Commentaires sur ces manuels

Pas de commentaire

Casio WK-1200 Manuel d'utilisateur Page 11

Commentaires sur ces manuels

Produits connexes et manuels pour Instruments de musique Casio WK-1200