CMX860 查看數據表（PDF） - CML Microsystems Plc

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CMX860

Telephone Signalling Transceiver

CML Microsystems Plc 

Telephone Signalling Transceiver / Least Cost Router

Section

CONTENTS

Page

1.0 Features and Applications .................................................................. 3

1.1 Brief Description.................................................................................. 3

1.2 Block Diagram ..................................................................................... 5

1.3 Signal List ............................................................................................6

1.4 External Components.......................................................................... 8

1.4.1 Ring Detector Interface......................................................... 10

1.4.2 Hook Detector Interface ........................................................ 11

1.4.5 RESETN pin........................................................................... 11

1.5 General Description........................................................................... 12

1.5.1 Tx USART .............................................................................. 13

1.5.2 FSK Modulator ...................................................................... 14

1.5.3 Tx Filter and Equaliser.......................................................... 14

1.5.4 DTMF/Tones Generator ........................................................ 14

1.5.5 Tx Level Control and Output Drivers ................................... 14

1.5.6 DTMF Decoder and Tone Detectors..................................... 15

1.5.7 Rx Modem Filter and Equaliser ............................................ 16

1.5.8 FSK Demodulator.................................................................. 16

1.5.9 Rx Data Register and USART ............................................... 16

1.5.10 Rx Modem Pattern Detectors................................................ 18

1.5.11 Analogue Signal Routing ..................................................... 18

1.5.12 'C-BUS' Interface ................................................................... 19

1.5.12.1

General Reset Command.............................. 19

1.5.12.2

General Control Register.............................. 21

1.5.12.3

Transmit Mode Register ............................... 23

1.5.12.4

Receive Mode Register ................................. 26

1.5.12.5

Tx Data Register............................................ 28

1.5.12.6

Rx Data Register ........................................... 28

1.5.12.7

Analogue Signal Path Register .................... 29

1.5.12.8

Status Register.............................................. 30

1.5.12.9

Programming Register.................................. 33

1.5.12.10

Other Registers ............................................. 35

1.6 Application Notes .............................................................................. 36

1.7 Performance Specification................................................................ 37

1.7.1 Electrical Performance.......................................................... 37

1.7.1.1 Absolute Maximum Ratings..................................... 37

1.7.1.2 Operating Limits....................................................... 37

1.7.1.3 Operating Characteristics ........................................ 38

CMX860

© 2002 Consumer Microcircuits Limited

4

D/860/5

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