Korg A4 - Block Diagram

INPUT
LEVEL
A/D
LPF
DSP
D/A
OUTPUT
L/MONO
LEVEL
IND.
CURCUIT
LEVEL
I
ND
.
TUNE
TUNER
CIRCUIT
1
^
L-J-j
j
{
^
MUTE
CURCUIT
w DRAM
OUTPUT
LEVEL
CPU
ROM
256Kbit
RAM 6Kbit
PHOTO
COUPLER
'n
PHONI
*V
MINI
MIDI OUT
VOL
PEDAL
EXT
CONTROL
SWITCH
LED
—
-
H
mm t Iv
*
BANK/PROG
VALUE
PARMETER
.
BLOCK
DIAGRAM