High Speed GMSK Modem 4k to 64kbps
Page 2 of 20
MX589
Contents
Section
Page
1 Block Diagram................................................................................................................3
2 Signal List.......................................................................................................................4
3 External Components....................................................................................................5
4 General Description.......................................................................................................7
4.1 Clock Oscillator Divider ........................................................................................................7
4.2 Receive ................................................................................................................................7
4.2.1 Rx Signal Path Description......................................................................................................7
4.2.2 Rx Circuit Control Modes ........................................................................................................8
4.2.3 Rx Clock Extraction.................................................................................................................9
4.2.4 Rx Data Extraction...................................................................................................................9
4.2.5 Rx S/N Detection...................................................................................................................10
4.2.6 Rx Signal Quality...................................................................................................................10
4.3 Transmit .............................................................................................................................11
4.3.1 TX Signal Path Description ...................................................................................................11
4.4 Data Formats .....................................................................................................................13
4.5 Acquisition and Hold Modes...............................................................................................13
5 Application ...................................................................................................................14
5.1 Radio Channel Requirements ............................................................................................14
5.1.1 Bit Rate, BT, and Bandwidth .................................................................................................14
5.1.2 FM Modulator, Demodulator and IF ......................................................................................14
5.1.3 Two-Point Modulation............................................................................................................15
5.2 AC Coupling of Tx and Rx Signals.....................................................................................16
6 Performance Specifications........................................................................................17
6.1 Electrical Specifications......................................................................................................17
6.1.1 Absolute Maximum Limits .....................................................................................................17
6.1.2 Operating Limits ....................................................................................................................17
6.1.3 Operating Characteristics......................................................................................................18
6.1.4 Packages...............................................................................................................................19
MXCOM, Inc. reserves the right to change specifications at any time without notice.
2001 MX-COM, Inc.
www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054
Doc. # 204800103.011
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
All trademarks and service marks are held by their respective companies.
CMLMICRO [ CML MICROCIRCUITS ]
