THE FUNCTIONS
OF MAIN ICs
CPU
( H16
)
TG88
(
TONE GENERATOR )
DF88
(
DIGITAL
FILTER
)
MAPI 6
(
DECORDER /
CARD BUFFER
)
KSP
( KEY SCAN
PROCESSOR
)
HD641016CP10
MB87726
MB87727
MB622472
M37450M4-233FP
TG88
***
TG88( MB87726
)
is the IC which is developed for the sound source
of
the electronic instruments.
DF88
***
DF88( Digital Filter
88
) is DSP-LSI which works for VDF ( Variable Digital
Filter ), VDA ( Variable Digital Amplifier ), MIXER of PCM synthesizer and
PCM
piano.
The following are the main
functions of DF88.
(
1
)
It receives Voice
Data. ( Parallel in Block
)
(
2
)
It exchanges the data
which CPU. ( CPU Interface Block
)
(
3
)
It operates Filter,
EQ, Exiter and EG. ( DSP Block
)
(
4
)
It mixes
the filtered voice output.
(
Mixer Block
)
(
5
)
It sends
the data to MDE1.
(
Parallel Out Block
)
(
6
)
It sends the
data to MDE2. ( Serial Out Block
)
MAP16
**
MAP16(
MB622472
)
is CPU Gate Array only
for
WAVE STATION. The main
functions
are
the Gate Arrray
function connected which CPU such
as Address
Latch,
Address
Decoder, Read/Write
Pulse
Occurrence Circuit, and the
interface
with the
IC card.
KSP
****
KSP(
M37450M4-233FP
) scans the data of the
keys,
the panel switches,
the
wheel,
the
joystick and
the pedals, converts those data to
serial and
transmits
them to CPU.
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