41057610TH Rev. 1
15 /
•
Basic specificaton
-
Type:
72 pins SIMM (32 bits buss width)
-
Access time:
60ns, 70ns, 80ns
-
Capacity:
4, 8, 16 or 32MB
-
Parity:
None
(9)
2nd Cache and 2nd Cache Controller
This printer has the 2nd Cache unit which type is Write Through Cache and size is 512 KByte.
There are any difference between the instruction and data. All of the CPU read/write access
are cached to same 2nd cache memory.
(10) RAM module
•
Pin layout
•
ECP mode
This mode provides the asynchronous bidirectional interface and transmits and
receives 1-byte data using eight data signal leads under semi-duplex control by the
host.
When the power is turned on, the compatibility mode is automatically selected. The
change to another mode from the compatibility mode is made through negotiation.
(When the BI DIRECTION is set to ENABLE in the menu, this change can be performed.)
(For the electrical/physical characteristics of this interface, see APPENDIX B)
(b) Network interface (Option)
Network interface card uses the power line only.
Figure 2.3
Printer
Control board
LAN
expansion board
interface
Power Line only
Network, etc.
1
36
37
72
Содержание OKICOLOR 8
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