Boards
SM 167 D361
Fax Option
Type 3350
D361
5.2 BOARDS
5.2.1 FCU
The FCU (Facsimile Control Unit) controls fax communications, the video interface to the
base copier’s engine, and all the fax options.
FACE3 (Fax Application Control Engine)
 CPU
 Data compression and reconstruction (DCR)
 DMA control
 Clock generation
 DRAM backup control
Modem (FAME)
 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
 The SAF memory is backed up by a rechargeable battery.
Memory Back-up
 A rechargeable battery backs up the SAF memory (DRAM) for 1 hour.
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