Gestetner G060 Service Manual page 814

BOARDS
4.2 BOARDS
4.2.1 FCU
SG3
V.34
M O D E M
Analog
Circuit
Monitor
S p e a k e r
The FCU (Facsimile Control Unit) controls fax communications, the video interface
to the base copier's engine, and all the fax options.
FACE2 (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 control
Modem (R288F-29)
• V.34, V33, V17, V.29, V.27ter, V.21, and V.8
G307
ISDN
CPU BUS
C P U
( R U 3 0 )
Function
N C U
Upgrade
Unit
(512 kB)
S R A M
F l a s h R O M
(256 kB) (2 MB)
FACE2
D C R V I F
DMA BUS
D R A M
(8 MB)
DIMM
(32 MB)
4-2
M B U
F B I F C U I F
G307D510.WMF
SM