FX929B Datasheet, PDF(2/48 Page) CML Microcircuits

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FX929B Datasheet, PDF (2/48 Pages) CML Microcircuits – Flexible Operating Modes

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4-Level FSK Modem Data Pump

Section

CONTENTS

Page

1.1 Brief Description.........................................................................................1

1.2 Block Diagram ............................................................................................3

1.3 Signal List ...................................................................................................4

1.4 External Components.................................................................................6

1.5 General Description ...................................................................................7

1.5.1 Description of Blocks .................................................................7

1.5.2 Modem - ÂµC Interaction ............................................................10

1.5.3 Binary to Symbol Translation...................................................11

1.5.4 Frame Structure ........................................................................12

1.5.5 The Programmer's View............................................................13

1.5.5.1 Data Block Buffer .....................................................................13

1.5.5.2 Command Register ..................................................................14

1.5.5.3 Control Register .......................................................................22

1.5.5.4 Mode Register..........................................................................24

1.5.5.5 Status Register.........................................................................25

1.5.5.6 Data Quality Register ...............................................................27

1.5.6 CRC, FEC, and Interleaving ......................................................28

1.5.7 Transmitted Symbol Shape ......................................................29

1.6 Application Notes .....................................................................................31

1.6.1 Transmit Frame Examples ........................................................31

1.6.2 Receive Frame Examples..........................................................34

1.6.3 Clock Extraction & Level Measurement Systems....................37

1.6.4 AC Coupling ..............................................................................38

1.6.5 Radio Performance ...................................................................40

1.6.6 Received Signal Quality Monitor..............................................41

1.7 Performance Specification.......................................................................42

1.7.1 Electrical Performance..............................................................42

1.7.2 Packaging..................................................................................46

FX929B

Note: As this product is still in development, it is likely that a number of changes and additions will

be made to this specification. Items marked TBD or left blank will be included in later issues.

D/929B/1

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