CMX635 Просмотр технического описания (PDF) - CML Microsystems Plc

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CMX635

ISDN Subscriber Processor

CML Microsystems Plc 

ISDN Subscriber Processor

CMX635

Section

CONTENTS

Page

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

1.2 CMX635 Block Diagrams .......................................................................................4

1.2.1 Functional Block Diagram ..................................................................................4

1.2.2 Analogue Block Diagram....................................................................................5

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

1.3.1 Pin numbers.......................................................................................................6

1.3.2 Pin description ...................................................................................................7

1.4 External Components..........................................................................................10

1.4.1 Component Values...........................................................................................11

1.4.2 Equivalent Analogue Input/Output Circuits .......................................................12

1.5 Functional Description ........................................................................................13

1.5.1 The ST interface and Digital Phase Locked Loop .............................................14

1.5.2 The HDLC Controllers and FIFOs ....................................................................15

1.5.3 The IOM Interface............................................................................................17

1.5.4 The G.711 Codec and Analogue Gain Path......................................................19

1.5.5 The Tone Generator and Tone Decoder...........................................................19

1.5.6 The Channel Routing Block..............................................................................20

1.5.7 Speaker Phone Functions ................................................................................20

1.5.8 The Processor Interface, Top Level Status and Power Control .........................21

1.6 Programming Guide. ...........................................................................................23

1.6.1 Interrupt Structure ............................................................................................23

1.6.2 CMX635 Register Definition and Description....................................................25

1.6.2.1 ST Interface Block.......................................................................................25

1.6.2.2 Data Routing Block .....................................................................................31

1.6.2.3 HDLC FIFO Control.....................................................................................33

1.6.2.4 HDLC Rx Channel Control ..........................................................................36

1.6.2.5 HDLC Tx Channel Control...........................................................................40

1.6.2.6 IOM Interface Control..................................................................................42

1.6.2.7 Clock and Power Control .............................................................................45

1.6.2.8 Speaker Phone Statistics ............................................................................49

1.6.2.9 Audio Block.................................................................................................52

1.6.2.10 Tone/Codec Block.......................................................................................56

1.6.3 Register Address Definition Summary..............................................................63

1.7 Application Notes ................................................................................................67

1.7.1 Example CMX635 Configurations ....................................................................67

1.7.1.1 Dual Short Loop POTS System ...................................................................67

1.7.1.2 ISDN Telephone/Feature/Speaker Phone....................................................68

1.7.1.3 ISDN PC Card (Active Data Adaptor) ..........................................................69

1.7.1.4 Video Phone ...............................................................................................70

1.7.1.5 Intelligent NT or NT1Plus ............................................................................71

1.7.2 IOM-2 Interface Summary................................................................................72

1.7.2.1 General .......................................................................................................72

1.7.2.2 Frame Structure ..........................................................................................72

1.7.2.3 Monitor Channel Handshake Protocol..........................................................74

1.7.2.4 C/I0 Channel Description.............................................................................76

1.7.2.5 TIC Bus Description ....................................................................................76

1.7.3 Tone Switching ................................................................................................79

1.7.4 Telecom Tones ................................................................................................80

1.8 Performance Specification ..................................................................................84

1.8.1 Electrical Performance.....................................................................................84

© 2001 Consumer Microcircuits Limited

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D/635/2

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