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Casio CTK-731 Service Manual

Casio CTK-731
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— 9 —
DSP and DAC CIRCUIT
The DSP (Digital Signal Processor) and DAC (Digital Analog Converter) consists of the following circuits.
RA22
Working RAM (256K-bit)
TC55257DFL-70L
LSI5
ROM2
MX23C3210MC-12CA89
LSI3 (32Mbit)
ROM1
MX23C8100MC-12CA99-465
LSI2 (8Mbit)
SOLP
BOK
WOK1
EA0 ~
EA14
D0 ~
D15
ED0 ~
ED15
KC0 ~
KC7
SI0 ~ SI7
FI0 ~ FI7
RA0 ~
RA18
RA0 ~ RA20
CS
RA23
CE A0 ~ A18 Q0 ~ Q15 CE A0 ~ A20 Q0 ~ Q15
WE
OE
D0 ~ D15
A0 ~ A14
PG
24.576 MHz
DAC
UPD6376GS
LOUT
ROUT
SOLP: Sound data
BOK: Bit clock
WOK1: Word clock
SI
CLK
LRCK
DSP
HG51B155FD
LSI4
CPU
HD6433042SB51F
LSI9
Key Controller
TC190C020AF-001
LSI10
RD0 ~ RD15
RA0 ~
RA20
D8 ~
D15
Control
data
key
data
key
data
Key-
board

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Casio CTK-731 Specifications

General IconGeneral
BrandCasio
ModelCTK-731
CategoryElectronic Keyboard
LanguageEnglish

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