Korg wavestation Service Manual page 47

MB87726(TG88)
PIN
ASSIGNMENT
TG88(MB87726)
PIN
FUNCTION
PIN NAME I/O
FUNCTION
VDD
-
+5V
VSS
-
GND
SMODE
I
Sub TG Mode
(
H:Sub TG
L:
Master TG
)
FliODE
I
Sampling Rate Switch
(
H:48KHz
L:30KHz
)
XRESET
1
Low Active Initial Clear
CLK
I
Master clock
XCRO
System Counter Reset for Sub
TG
Chip
XCRI
I
System Counter Reset from Master
TG
Chip
TESTO-3
I
Test Mode Selector
XCSI
I
Chip Select
XWRI
I
Write Pulse
Input
from CPU
XRDI
I
Read Pulse Input
from CPU
AO-9
I
Address Input
from CPU
DO-7
I/O
Data Input
from CPU
D8-15 I/O
Data
Input for 16bit
Data
Bus
DMODE
I
CPU I/F
Data Bus Syze Select
(
L:8bit H:16bit
)
EWDO-15
I
Even-address Wave Data in
(
from Wave ROM
)
0WD0-15
I
Odd-address Wave Data in
(
from Wave ROM
)
IAO-19
Address Bus for
Wave ROM or RAM
WBO-3
Bank Number
out for
Wave ROM
(
16
Banks
)
0D0-19 Voice Data
out for
External Filters or MDE
VNO-4
Voice Number out
RASO-3 for
D-RAM
CASO-3 for
D-RAM
0WE0-3
Write Enable for MDE
OWEF
.
Write Enable
for New Filter Chip
(
MB87727
)
49