BOARDS
SM 111 B779
Fax Option
B779
4.2 BOARDS
4.2.1 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
BICU
FCU
FACE3
SAF
BACKUP
SDRAM
(16MB)
DIMM
(32 MB)
DMA BUS
CPU BUS
MBU
SRAM
(256kB)
FROM
(3MB)
BACKUP
& RESET
FCUIF
PCI BUS
CCUDRVCCUIF
v.34
MODEM
Speaker
Drive
Speaker
NCU
Circuit
Line
TEL
G3 G3
B779D902.WMF
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