GMSK Modem Data Pump
Page 2 of 37
MX909A PRELIMINARY INFORMATION
CONTENTS
Section
Page
1 Block Diagram............................................................................................................... 3
2 Signal List...................................................................................................................... 4
3 External Components................................................................................................... 5
4 General Description...................................................................................................... 6
4.1
4.2
4.3
4.4
4.5
Description of Data Blocks.............................................................................................. 6
Modem - µC Interaction................................................................................................... 9
Data Formats.................................................................................................................. 9
The Programmer's View................................................................................................ 11
CRC, FEC, Interleaving and Scrambling Information..................................................... 22
5 Application................................................................................................................... 24
5.1
5.2
5.3
5.4
5.5
Transmit Frame Example.............................................................................................. 24
Receive Frame Example............................................................................................... 26
Clock Extraction and Level Measurement Systems....................................................... 28
AC Coupling.................................................................................................................. 30
Radio Performance....................................................................................................... 31
6 Performance Specification......................................................................................... 32
6.1
6.2
Electrical Performance.................................................................................................. 32
Packaging..................................................................................................................... 36
MX•COM, Inc. Reserves the right to change specifications at any time and without notice.
¤2001 MX-COM, Inc.
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. # 20480134.005
All trademarks and service marks are held by their respective companies.
CMLMICRO [ CML MICROCIRCUITS ]
