PCBS
B040 6-2 SM
6.2 PCBS
6.2.1 FCU
The FCU (Facsimile Control Unit) controls fax communications, the video interface
to the base copier’s engine, and all the fax options.
FACE2
• CPU
• Data compression and reconstruction (DCR)
• DMA control
• Clock generation
• DRAM backup control
• Ringing signal/tone detection
• Video and command interface to the BiCU (VIF)
Modem (Rockwell R288F)
• V.34, V33, V17, V.29, V.27ter, V.21, and V.8
FCU
CPU (RU30)
DRAM
(8MB)
V.34 MODEM
DMA BUS
Bus Interface
Parallel Interface
Analog Circuit
NCU
Monitor
Speaker
BiCU
CPU BUS
VIF
Flash ROM
(3MB)
SRAM
(128kB)
DCR
FACE2
B404D535.WMF
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