Baseband Signal Processor

2

MX829 PRELIMINARY INFORMATION

© 1998 MX

•COM Inc.

www.mxcom.com Tele: 800 638-5577 336 744-5050

Fax: 336 744-5054

Doc. # 20480160.004

4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA

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CONTENTS

Section

Page

1. Block Diagram ................................................................................................................................ 3

2. Signal List ....................................................................................................................................... 4

3. External Components..................................................................................................................... 5

4. General Description ....................................................................................................................... 6

4.1 Audio Filtering ........................................................................................................................................... 6

4.2 MOD1 and MOD2 Attenuators .................................................................................................................. 6

4.3 DTMF Encoder .......................................................................................................................................... 6

4.4 MSK Tx...................................................................................................................................................... 6

4.5 MSK Rx ..................................................................................................................................................... 6

5. Software Description...................................................................................................................... 7

5.1 Address/Commands.................................................................................................................................. 7

5.2 Write Only Register Description ................................................................................................................ 8

5.3 Read Only Register Description ............................................................................................................... 14

5.4 MSK Checksum Generation and Checking.............................................................................................. 15

6. Application ..................................................................................................................................... 17

6.1 Programming the MX829 ......................................................................................................................... 18

7. Performance Specification ........................................................................................................... 20

7.1 Electrical Performance ............................................................................................................................. 20

7.2 Packaging................................................................................................................................................. 27

MX

•COM, Inc. reserves the right to change specifications at any time and without notice