Oki OKIOFFICE44 Service Manual page 279

IOGA3
PD0-PD7
Busy
nAck
PError
Select
nFault
nStrobe
nInit
nSelectIn
nAutoFd
BREQ
BACK
IC2
BREQ
BACK
RD/WRT/CASL/RMCS
SH7034
CPU
Figure A3.1.14 Interface between R44 Board and CTR Board (PC interface unit)
Board Descriptions
CN12
AD0-AD7
AD8-AD15
CN11
R44 CTR (option)
A - 37
Transceiver
20pin
CN3
Dir
Driver
Receiver
nStrobe
nSelectIn
DIR
nAutoFd
BREQ-I
BREQ-O
BACK-I
BACK-O
RD/WRT/CASL/RMCS
AD0-AD7
AD8-AD15
CN2
EPM7064LC68-15
50pin
OKIOFFICE 44 Serv. Man., P/N 59276801
+5V
CN1
PD0-PD7
+5V
Busy
nAck
to PC
PError
Select
nFault
+5V
nStrobe
nInit
nSelectIn
nAutoFd
IC1