Casio MG-500 - Page 11

3-2
BLOCK
DIAGRAM
AC edeptor (AD—5)
Power
MIDI
MIDI
Circuit
Circuit
Pickup
ie
|
=
E
Rom
[|
wpp7ecio
}——|
GAF
|»
midi
out
6
AA
size
batteries
——+|
:
Switches
8
LEDS
Linear
Circuit
separates
the
signal
from
MIDI
pickup
into
three
kinds
of
data
which
are
velocity,
peak,
and
frequency
data.
Gate
Array
F
contains
sexadecimal
counters
which
counts
up
frequency
data
and
send
it
to
CPU
asa
pitch
data.
Peak
signal
is
used
for
the
timing
signal
of
the
counters.
Velocity
data
is
transformed
into
digital
data
in
builtin
ADCs
in
CPU.
The
pitch
and
the
velocity
data
are
converted
into
MIDI
signal
in
CPU
and
sent
to
MIDI
OUT
terminal
via
a
buffer
in
Gate
Array
F.