Casio CZ-1 Service Manual And Spare Parts List

11-3.
Pin
Functions of
Kty
Touch
Control
LSI
(MSM6200)
Pin No.
Terminal
Name In/Out
Function
1-6
IR6
-
IC8
In/Out
Exttfnil
RC
discharging
circuit inputs and
outputs.
10
REF
Raftranca voltage
(+5V).
11 AG
Analog ground.
*u
HI
Out
1 marmot raauMt tional outout
Whan
LOW, MSM6200
intarrupts
tha CPU.
26-28
29-32
02-05
101
—
104
Out
In/Out
Uppar
4-bit data bus.
Lowtf
4-bit
data bus.
Q2
03 04 OS
101
102 103
104
MSB
LSB
34
1
2
In
alb
I
moor
0ii
L#icn cnwiii
sigmi inpui.
Whan
HGIH.
addrass
in MSM6200 is
assigned.
35
13
In
vVR signal input.
Whan
LOW.
data
or addrass can
ba
written in
MSM6200.
36
14
In
TO
signal input.
Whan
LOW, CPU
raads data
from
MSM6200.
37
16
In
GTiehip
salact)
signal
input.
Whan
LOW,
communications
batwaan
tha
CPU
and
MSM6200
is
possibla.
38 1
10
In
Rasat
signal input.
LOW:Actiwa.
At
powar on, racaivas
a
rasat signal
to
initialize
MSM6200'* intarnal
circuits.
40
VOO
6
volt
sourca.
43 PCI
In
Clock pulsa
(2.47
MHz) input.
46
VSS2
Ground
(0
volt)
sourca.
46
VSS1 2.25 volt
sourca.
47-60
KC2B-KC1A Out
Kay
common
signal
outputs.
68-48
K8
-
K38
In
Kay input
terminals.
91-100
IR1
-
IC6 In/Out External
CR circuits
inputs
and
outputs.
11-4.
Pin
Functions
of
Kay
Inttrfeco
LSI
(*iPD8049HC)
Pin
No.
Terminal
Name
In/Out
Function
1
TO
In
Clock
pulsa
input
for
data read/write.
2
XTAL1
In
8.96 MH
dock
pulsa
input.
4
RESET
In
At
powar
ON,
tha
terminal
stays
LOW level
for
a while
in
order
to
initialize
internal
circuits.
6
mr
In
Interrupt
signal
input
from
MSM6200.
8
TO
Out
Read
signal
output.
Key
Interface
LSI
reads
data from
MSM6200
when
terminal
Is
LOW.
10
WR
Out
Write
signal
output.
Kay
Interfeoa
LSI write*
data
or
address
in
MSM6200
when
terminal
to
LOW.
11
ALE
Out
ALE (Addrass
Latch
Enable)
signal
output.
Address
in
MSM6200
Is
assigned
whan
HIGH
level.
-32-

Casio CZ-1 Specifications

General

Brand	Casio
Model	CZ-1
Category	Synthesizer
Language	English