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Casio AT-1 User Manual

Casio AT-1
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— 3 —
BLOCK DIAGRAM
KC0 ~
KC7
SI0 ~ SI7
FI0 ~ FI7
Key Touch LSI
LSI106
HG52E35P
Working Strage
RAM (64K-bit)
LSI104
SRM2264LC90,10
7-Seg.
LED
LO0 ~ LO4
LED driver
IC301/302
BA612
LD0 ~ LD7
Buttons
KI1 ~ KI7
VDD
Power Switch
MIDI
IN
OUT
EA0 ~ EA12
ED0 ~ ED7
DSP
LSI105
HG51B155FD
RA0 ~ RA19
RD0 ~ RD15
Sound Source ROM
(16M-bit)
LSI103
TC5316200CP-C106
WCK1 SLOP BCK
D/A Converter
LSI101
UPD6376CX
Filter
IC105
Main
Volume
Power Amplifier
IC102
LA4598
CPU
LSI102
HD6433298A36P
Keyboard
A0 ~ A14
POWER
Power Supply Circuit
IC101, Q1 ~ Q4
VCC
AVDD
VDD
LVDD
DVDD
VC
APO
Effect RAM
(64K-bit)
LSI107
SRM2264LC90,10
D0~D7
Speakers
Output
A0 ~
A12
A0 ~ A3
A0 ~ A2
LEDs
LED driver
Q109 ~ Q116
KO Signal
Generator
IC303/304
TC74HC174P
La ~ Lg, Lp
Reset IC
IC104
RE5VA35AA
RESET
KO
CLK
KO0 ~ KO10
LC1 ~ LC4
Filter
IC105

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Casio AT-1 Specifications

General IconGeneral
BrandCasio
ModelAT-1
CategoryElectronic Keyboard
LanguageEnglish

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