1200/2400/4800bps MSK Modem
3
1. Block Diagram
MX469
TX DATA I/P
TX ENABLE
TX GENERATOR TX FILTER
CLOCK RATE
XTAL/CLOCK
XTAL
CLOCK
OSCILLATOR
1200/2400 BPS SELECT
4800 BPS SELECT
RX ENABLE
RX SIGNAL I/P
RX FILTER
DIVIDER
f.. n
LIMITER
RETRIGGERABLE
MONOSTABLE
DIGITAL
FILTER
DATA
FILTER
TX SIGNAL O/P
TX SYNC O/P
VDD
V BIAS
VSS
LIMITER
BANDPASS O/P
UNCLOCKED
DATA O/P
RECTIFIER
NOISE FILTER
RECTIFIER
DIGITAL
PLL
DATA
LATCH
CLOCKED
DATA O/P
RX SYNC O/P
S/N
COMPARATOR
CARRIER DETECT TIME CONSTANT
CARRIER DETECT O/P
Figure 1: Block Diagram
1998 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. # 20480081.010
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
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