Oki B4100 - Manual (Page 492)

40055101TH Rev.4 492 /
A3.12 CTR (PC interface unit) Circuit Diagram (option)
CTR board is used as an interface board of PC and FAX when PC is connected to facsimile machine.
1. Block diagram
CTR board circuit is formed by Receiver, Driver, and 1284-I/F.
Figure A3.12.1 shows related signals of CTR board.
1284-I/F
Receiver
Driver
Host PC
CN2
CN3
CN1
RD-N, WRL-N
PSBN
VEROP
ACK-N
CASL-N,
FLT-N
SELP
AFXN
BSYP
IPRN
AD8 to AD15
IC2
CTR (option) R44/17
CPU
IOGA
AD0 to AD7
BRE0I
SLIN
PD0 to PD7
BACKI
CLK
BRE0O
BACKO
Figure A3.12.1 Related Signals of P050 (PC interface unit)