Oki B4100 - Manual (Page 397)

40055101TH Rev.4 397 /
1. Block diagram
The circuit diagram shown on page 11/12 consists of the following connectors:
•
Connector CN13 that provides an interface between R44 board and optional memory board.
• Connector CN11 and CN12 that provides an interface between R44 board and optional CTR
board.
Figure A3.1.13 shows the interface between R44 and memory board.
Figure A3.1.14 shows the interface between R44 and CTR (PC interface unit) board.
Note 1: One of 512 kbyte (MEM) or 1 Mbyte (MEM-2) memory board can be added to the
memory capacity for OKIOFFICE 44/OKIFAX 4100.
A3.1.12 R44 Circuit Diagram (Page 12/12)
RAM1
RAM2
P-SRAM
AD0 to AD7 AD0 to AD7
A0 to A18 A0 to A18
RD-N
PSREAD-N
PCS1-N to PCS4-N
WRL-N
RD-N
PSREAD-N
PCS1-N to PCS4-N
WRL-N
5 V
0 V
5 V
0 V
CPU
IOGA
MEM/MEM-2 (option) R44
CN CN13
A11
A19
A20, A21
B19, B20
B12
A13, B13
A5, B5, A18,
B18
IC2
Figure A3.1.13 Interface between R44 Board and Memory Board (option)