Boards; Fcu - Ricoh Type M12 Field Service Manual

5. Detailed Section Descriptions

Boards

FCU

The FCU (Facsimile Control Unit) controls fax communications, the video interface to the base copier's
engine, and all the fax options.
FACE3.5 (Fax Application Control Engine)
• CPU
• Data compression and reconstruction (DCR)
• DMA control
• Clock generation
• DRAM backup control
Modem (FAME2)
• V.34, V33, V17, V.29, V.27ter, V.21, and V.8
DRAM
• The 16 MB of DRAM is shared as follows.
• SAF memory: 4MB
• Working memory: 4MB
• Page memory: 8MB
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