Casio CZ-1 - Page 117

22.
OUTPUT
VOLUME
CONTROL
CIRCUIT
V
VCA
(M5241L)
±
i
I
•
!
;
-
%
t
U.
«»|
U|
Q
Output
volume
is
controlled
by
V
(Voltage
Controlled
Amplifier) M5241
L
The
VCA
amplitude
is
controlled by
VCA
control
signal
which
is
generated
by
VCA
mixer.
a
a
a o
a
a
—
cm
r)
co in
Decoder
SN74CS174N
1
O
O
O
O
O
O
i
CM
CO *T
lO
<D
V
I
ai
ai
o
>
L.iJa.
!
..
Data
bus
DO
-ihrrrLZ
From
Mam
CPU
-D5