Pcbs; Fce2; Fcip (Facsimile Controller And Image Processor); Modem (Rockwell R144Efxl) - Ricoh FAX3700l Service Manual

August 2nd, 1995

2.4. PCBs

2.4.1. FCE2 *

+12VP
Flash ROM
(512kB)
Memory Card (Optional)
RS232C Interface (Optional)

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
+5V
DRAM Video SRAM
(1.5MB)
DATA/ADDRESS BUS
R144EFXL
Modem
29.952MHz
32.768kHz
2-59
DETAILED SECTION DESCRIPTIONS
Mask ROM
(8kB) (128kB)
SRAM
(32kB)
FCIP
FDU
PCBs
FCE
+5V
IC6
+5VBAT
Battery
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