Casio GZ-500 manual Block Diagram, KC7

Page 8

BLOCK DIAGRAM

MIDI

OUT IN

Keyboard

	FI0 ~ FI7	KC0 ~
	SI0 ~ SI7	KC0 ~
	SI0 ~ SI7	KC7

Key Controller

LSI107

HG52E35P

LED driver

LED driver

7-seg. LED

IC371

Q104 ~ Q111

LEDs

BA612

La ~ Lg, Lp

LS0 ~

KO1 ~ KO3

LS7

P41

KO Signal

KO0 ~

P40

Generator IC102

Buttons

TC74HC174AF

KO5

CPU

LSI106

KI1 ~ KI5

HD6433298A42F

Power Switch

POWER

Reset IC

IC5

RESET

RH5VL36AA

A0 ~

A14

D0~D7

Working Storage RAM

(64K-bit)

LSI105

A0 ~ A14

SRM2264LM90-B

A0 ~ A2

A0 ~ A3

Effect RAM	EA0 ~ EA14
(256K-bit)
LSI103
LC33832M-70	ED0 ~ ED7

DSP

LSI102

HG51B115FD

RA0 ~ RA19

RD0 ~ RD15

Sound Source ROM

(16M-bit)

LSI101

TC5316200CF-C112

WCK1 SLOP BCK

D/A Converter

LSI104

UPD6376GS

Output

Speakers

Filter		Filter
IC101		IC101

Main

Volume

Power Amplifier

IC402

LA4598

VC LVDD DVDD

VCC AVDD VDD

Power Supply Circuit

IC401, Q401 ~ Q405

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Image 8

Contents GZ-500 Contents SpecificationsSetting UP the Keyboard Setting Setting operationInitial settings OperationTransmitting Midi Messages Initial settings in The General Midi systemMidi Message Setting Setting operation Selecting a Midi channel 1. Press the Midi button Initial settings of Midi control change Setting on/off of a Midi channelReceiving Midi Messages Transmitting a digital effect typeTransmittable Messages Receivable MessagesBlock Diagram KC7Circuit Description KEY MatrixPower Supply Circuit Reset CircuitButton Matrix Name Voltage For operationDigital Signal Processor LSI102 HG51B155FD Pin No Terminal In/Out FunctionCE1, Trsb Block diagram of DSP and DAC circuit GND4DAC LSI104 UPD6376GS KEY Controller LSI107 HG52E35PFilter Block Power Amplifier IC402 LA4598 LED DrivingMajor Waveforms Schematic Diagrams Main PCB JCM715-MA1M Console PCBs JCM715-CN1M/2M/3M Keyboard PCBs M616T-KY1M/KY2M Exploded View Parts List Amp./Volume PCBs FOB Japan Code No Parts Name Specification Yen Unit Price MA0800751A