CMX589A 查看數據表（PDF） - CML Microsystems Plc

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CMX589A

GMSK Modem

CML Microsystems Plc 

GMSK Modem

CMX589A

Section

Contents

Page

Features and Applications .................................................................................................1

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

Block Diagram .....................................................................................................................2

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

3 External Components ......................................................................................................6

4 General Description .........................................................................................................8

4.1 Clock Oscillator Divider......................................................................................................... 8

4.2 Receive ................................................................................................................................ 8

4.2.1 Rx Signal Path Description..........................................................................................................8

4.2.2 Rx Circuit Control Modes.............................................................................................................9

4.2.3 Rx Clock Extraction ...................................................................................................................10

4.2.4 Rx Data Extraction.....................................................................................................................10

4.2.6 Rx Signal Quality .......................................................................................................................12

4.3 Transmit ............................................................................................................................. 12

4.3.1 Tx Signal Path Description ........................................................................................................12

4.4 Data Formats...................................................................................................................... 15

4.5 Acquisition and Hold Modes ............................................................................................... 15

5 Application......................................................................................................................16

5.1 Radio Channel Requirements............................................................................................. 16

5.1.1 Bit Rate, BT, and Bandwidth .....................................................................................................16

5.1.2 FM Modulator, Demodulator and IF...........................................................................................16

5.1.3 Two-Point Modulation................................................................................................................17

5.2 AC Coupling of Tx and Rx Signals...................................................................................... 18

6 Performance Specifications ..........................................................................................19

6.1 Electrical Specifications ...................................................................................................... 19

6.1.1 Absolute Maximum Limits..........................................................................................................19

6.1.2 Operating Limits ........................................................................................................................20

6.1.3 Operating Characteristics ..........................................................................................................21

6.2 Packages............................................................................................................................ 23

© 1998 Consumer Microcircuits Limited

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D/589A/3

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