Akai VS-X9EGN

MB88301A-P(D/A
CONVERTER)
MBM2212-25(1K(1.024)-BIT
NON
VOLATILE
SRAM)
SYMBOL PORT NAME
a
ro)
|
AO
to
A7
Address
inputs
ot, (3) | a ae | 1/01 to 1/04 Data in/outputs
Dig
(4)
|
Cs
Chip
select
input
013(5) 13. BIT DATA REGISTER Appa Se = WE Write enable input
‘ST Store input
EX
tal
R
ele
:
©)
is
COINCIDENCE
CIRCUIT
BEER
@)
Tmo,
RC
Recall
input
=
L\
+B
(+5V)
TMO: Ground
x
tal
(7)
(3
BIT
COUNTER
>
©
2
foun
TMO3
[ees el
!
we Re] Noe —=«dr’C*tTE WoT
Lol
6BIT
COUNTER
6BIT
COUNTER
6BIT
COUNTER
(12)
vac,
NE
wal
H * HH | NO FUNCTION High impedance
|
T|
@oace
LH
HH
|
SRAM
READ
MODE
IN
COINCIDENCE
SIR.
COINCIDENCE
CIR.
COINCIDENCE
CIR.
"|
Ga)oacs
Dm
cet
Set~
etl
“Sea
WERE-WODE
eat
* H Lt oH RECALL High impedance
| [eet DATA REGISTER 6BIT DATA REGISTER 6BIT DATA REGISTER (5) DAC 4 H o* L4H RECALL
Ea
=
=
|
2
a)
ae
v@® Ov H o* oH STORE
LS
SO
OO
CO
rlrnOD’wr>>n
nee
ase
eee
er
*:
dont
care
TO MAIN PCB P30!
TO MAIN PCB PIOS
OPERATION PCB VIO73A5020
TRI,2-—--—2SB643
1R3-———DTAI44ES
TR4 —-———2SAl115 Ech
2SB643
E
CB ecB
B DTAIG44ES 2SAI1I5
Ee °] =Pnp TRANSISTOR
12