
2.4. PCBs
2.4.1. FCE2 *
1. FCIP (Facsimile Controller and Image Processor)
•
CPU
•
Modem (V.29, V.27, V.21)
•
Data compression and reconstruction (DCR)
•
Digital image processor (DIP)
•
Laser interface (LIF)
•
DMA controller
•
Clock generation
•
Stepper motor control
•
Serial interface to the FDU
•
DRAM backup control
•
Ringing signal/Tone detection
•
Fusing lamp control
2. Modem (Rockwell R144EFXL) *
•
V.17, V.33 modem
FCE
DATA/ADDRESS BUS
Mask ROM
(128kB)
DRAM
(1.5MB)
Flash ROM
(512kB)
Video SRAM
(8kB)
+12VP
+5V
Battery
+5V
IC6
FCIP
32.768kHz
29.952MHz
Parallel IO
Memory Card (Optional)
RS232C Interface (Optional)
FDU
Serial IO
SRAM
(32kB)
R144EFXL
Modem
+5VBAT
H516D530.wmf
August 2nd, 1995
DETAILED SECTION DESCRIPTIONS
PCBs
2-59