CONTENTS
Introduction
Function
of
Panel Lever
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(I) Panel 1 ·········································································································································· 2
(II) Panel 2 ·········································································································································· 5
(III)
Panel 3
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(IV) Rear Panel .................................................................................................................................... 7
(V) Others
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CS-50 Circuit Board Contents ··································/·············································································· 8
Basic Block
Diagr3ID
of
CS
······················································.................................································· 9
Keyboard ................................................................................................................................................ 10
Key
Data
Producing (Encoding) Circuit
11
Key DataProducing Circuit .......·····...............................................···················································
11
PIN Terminal Description
of
LSI (YM26600) .................................................................................... 12
Reference
Timing Clock
(rp,
SC, SC8)
Data
Processing Based
on
Time-sharing
Control
of
Produced Notes
13
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Operational Principle of·KEY
Data
Producing Circuit ......................................................................
13
KEY Coder ............................................................................................................................. 14
Output
Timing Chart for KEY Coder ..................................................................................... 16
KEY Assigner ···································································································································· 16
KEY Voltage Detecting Circuit ··············································································································· 20
Basic Construction
of
KEY Voltage Detecting Circuit ····································································· 20
PIN
terminal
Description
of
LSI (YM26700) ···················································································· 20
Timing Clock
(rp,
SC, SC8) ·····················································································································
21
Operational Principle
I
of
KEY Voltage Detecting Circuit ·
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········........
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........· 22
D-A Converter ···································································································································· 23
Operational Principle
II
of
KEY Voltage Detecting Circuit ······························································· 24
Port3IDento Operation ···································.····················································································· 24
Operational Principle
lli
of
KEY Voltage Detecting Circuit ····························································
25
Voltage-Controlled Oscillator
Basic Construction
of
Sound Source Circuit
27
27
PIN Terminal Description
of
VCOIII (IG00153) ................................................................................. 27
Operational Principle
ofVCO
III (IG00153) 28
Outline
of
VCO
III
Circuit Operation ································································································ 29
Transposition Circuit
...
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Wave
Shaper Converter Circuit (WSC) ································································································ 31
Noise Source Circuit ..............................................................................................................................
32
