Boards; Fcu - Ricoh B079 Service Manual

4.2 BOARDS

4.2.1 FCU

SG3 SG3
V.34
MODEM
Analog
Circuit
Monitor
NCU
Speaker
The FCU (Facsimile Control Unit) controls fax communications, the video interface
to the base copier's engine, and all the fax options.
FACE (Fax Application Control Engine)
• CPU
• Data compression and reconstruction (DCR)
• DMA control
• Clock generation
• DRAM backup control
• Ringing signal/tone detection
FBI (FACE Bridge Interface)
• Interface between the PCI bus and the FACE
• DMA controll
Modem (R288F-29)
• V.34, V33, V17, V.29, V.27ter, V.21, and V.8
SM
CÓPIA NÃO CONTROLADA
SRAM
(512 kB)
CPU BUS
CPU
DCR
(RU30)
DMA BUS
Function
DIMM
Upgrade Unit
(32 MB)
(512 kB)
119
CÓPIA NÃO CONTROLADA
Flash ROM
(3 MB)
FACE
VIF FBI
DRAM
(8 MB)
B360D510.WMF
BOARDS
MB
B547