Casio CPS-85 User Manual

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CPU (LSI4: GT913F)
The 16-bit CPU contains a 1k-byte RAM, three 8-bit I/O ports, two timers, a key controller and serial interfaces.
The CPU detects key velocity by counting the time between first-key input signal FI and second-key SI from
the keyboard. The CPU reads sound data and velocity data from the sound source ROM in accordance with
the selected tone; the CPU can read rhythm data simultaneously when a rhythm pattern is selected. Then the
CPU provides 16-bit serial sound data to the DSP. The CPU also controls MIDI input/output and stores
sequencer data into the working storage RAM.
The following table shows the pin functions of LSI4.
.oNniPlanimreTtuO/nInoitcnuF
10DXTtuOtuptuolangisIDIM
20DXRnItupnilangisIDIM
30KCStuOtuptuolangis)FFOrewoPotuA;OPA(REWOP
41DXT— .dnuorgotdetcennoC.desutoN
51DXRnItupnilangisNOrewoP
61KCStuOtuptuoeslupgnizinorhcnysZHM1
9~7
,0NA,CCVA
1NA
—.dnuorgotdetcennoC.desutoN
01DNGAnIecruos)V0(dnuorG
11KCBtuOtuptuokcolctiB
21OStuOtuptuoataddnuoslaireS
31KCRLtuOtuptuokcolcdroW
41DNGnIecruos)V0(dnuorG
61,511TLX,0TLXtuO/nItuptuo/tupnikcolczHM42
71CCVnIecruosV5+
91,811DOM,0DOMnI.dnuorgotdetcennoC.lanimretnoitcelesedoM
02BTSRnItupnilangisteseR
12IMNnItupnilangisNOrewoP
22TNI— dnuorgotdetcennoC
03~32
3IF~0IF
3IS~0IS
nIlangistupniyekroflanimreT
83~137CK~0CKtuOlangisnacsyekroflanimreT
25~93
01IF~4IF
01IS~4IS
nIlangistupniyekroflanimreT
55~352IK~0IKnIlangistupninottubroflanimreT
65BNWMtuOPSDehtroflangiselbaneetirW
67~7591AM~0AMtuOsubsserddA
770BSCMtuOMORecruosdnuosehtroftuptuolangiselbanepihC
871BSCMtuOdesutoN
972BSCMtuOPSDehtroftuptuolangiselbanepihC
08CCVnIecruosV5+
18DNGnIecruos)V0(dnuorG
28BDRMtuOMORecruosdnuosehtroftuptuolangiselbanedaeR
89~3851DM~0DMtuO/nIsubataD
99ELPnI
lanimreteht,rotpadaCAnaybderewopsidraobyekehtnehW
langisfforewopotuadnestonseodUPCehttahtostlov0semoceb
.tiucricylppusrewopehtot
00171PnItupniladeP

Casio CPS-85 Specifications

General

Brand	Casio
Model	CPS-85
Category	Electronic Keyboard
Language	English