21 May, 1999
PCBS
2-43
Detailed
Descriptions
2.4 PCBS
2.4.1 FCU
The FCU (Facsimile Control Unit) board contains the FCIP05 (Facsimile Control
and Image Processor), DRAM, SRAM, Flash ROM, and video processing memory,
and it controls the entire system.
FCIP05
•
CPU
•
Data compression and reconstruction (DCR) for fax mode and some PC Fax
Class 2 applications
•
Digital image processor
•
Laser interface
•
DMA controller
•
Clock generation
•
Stepper motor control
•
DRAM backup control
•
Fusing lamp control
ROM
•
2MB (16 Mbits) flash ROM for system software storage
DRAM
•
2 MB DRAM shared between the Line Buffer (96 KB), ECM Buffer (128 KB),
Page Memory (672 KB), System RAM (128KB), SAF memory (960 KB), and
Working DRAM
AFE
Flash
R O M
DRAM
S RA M
M o d e m
FCIP05
SYSTEM BUS
F C U
EXIO
Optional
IC Card
SiG4
Interface
Energy
Saver
CPU
I/O Driver
24V Driver
Motor
Driver
RS232C
Interface
Amplifier
JBIG
H547D541.WMF
