BOARDS
SM 123 B547
Fax Option
B547
4.2.4 SG3 BOARD
The SG3 board allows up to two simultaneous communications when used in
combination with the FCU.
CCP (Communication Control Processor)
• Controls the SG3 board.
• CPU (RU8)
• DPRAM (Dual Port RAM): Handshaking with the FCU is done through this
block.
• DMA controller
• JBIG interface
Flash ROM
• 512KB (4 Mbit) flash ROM for SG3 software storage.
• 512KB (4 Mbit) flash ROM for Panasonic modem software storage.
DRAM
• 512 KB DRAM shared between ECM buffer, line buffer, and working
memory.
QM coder
• QM coder for JBIG compression and decompression.
V.34 Modem
• Panasonic V.34 modem (MN195003MFL)
DRAM
(4MB)
JBIG
M65761
Flash ROM
(4MB)
Program
DATA/ADDRESS BUS
MN195003MFL
Modem
Flash ROM
(4MB)
Modem
DTMF
Receiver
Hybrid IC
CPU
(RU8)
DMAC JBIGIF TONEDPRAM
CCP
SG3-V.34
FCU
Standard
NCU
B360D513.WMF
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