BOARDS
B576 4-2 SM
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.
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 (Panasonic MN195006-E)
• V.34, V33, V17, V.29, V.27ter, V.21, and V.8
Ring
Detection
Circuit
OHDISW
TIP
RING
T1
T2
TRXD
Current
Sensor
Hook1
Hook0
OHDI SW.
NCU
JP7
JP8
ExRing
CML
Relay
Noise
Filter
Surge
Protection
Over-
current
Protection
Surge
Protection
DC Loop
L-
Transformer
CMLSW
Noise
Filter
DB1
B576D902.WMF
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