CMX624 Просмотр технического описания (PDF) - CML Microsystems Plc

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CMX624

V.23 / Bell 202 Modem

CML Microsystems Plc 

V23 / Bell 202 Modem

CMX624

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 ................................................................................ 6

1.5.1 Xtal Osc and Clock Dividers ..................................................... 6

1.5.2 Rx Input Amplifier ...................................................................... 7

1.5.3 Receive Filter and Equaliser ..................................................... 7

1.5.4 FSK Demodulator....................................................................... 8

1.5.5 Rx Energy Detector.................................................................... 8

1.5.6 FSK / DTMF Modulator .............................................................. 8

1.5.7 Transmit Filter ............................................................................ 9

1.5.8 Transmit Output Buffer ........................................................... 10

1.5.9 Ring Signal Detector................................................................ 10

1.5.10 Tx/Rx UART .............................................................................. 11

1.5.11 ‘C-BUS’ Interface...................................................................... 13

1.5.12 ‘C-BUS’ Registers .................................................................... 14

1.6 Application Notes.................................................................................. 15

1.6.1 Line Interface............................................................................ 15

1.6.2 Ring Detector Interface............................................................ 17

1.7 Performance Specification................................................................... 19

1.7.1 Electrical Performance ............................................................ 19

1.7.2 Packaging ................................................................................. 24

 2003 CML Microsystems Plc

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D/624/7

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