CMX869P4 Просмотр технического описания (PDF) - CML Microsystems Plc

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CMX869P4

Low Power V.32 bis Modem

CML Microsystems Plc 

Low Power V.32 bis Modem

CMX869

Section

CONTENTS

Page

1.

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

2.

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

3.

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

4.

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

4.1 Power Supply Connections.................................................... 7

4.2 Ring Detector Interface........................................................... 8

4.3 Line Interface........................................................................... 9

5.

General Description........................................................................... 11

5.1 Tx USART .............................................................................. 12

5.2 FSK and QAM Modulators .................................................... 14

5.3 Tx Filter and Equaliser.......................................................... 14

5.4 DTMF/Tone Generator .......................................................... 14

5.5 Tx Level Control and Output Buffer..................................... 14

5.6 Rx DTMF/Tones Detectors.................................................... 14

5.7 Rx Modem Filterering and Demodulation............................ 15

5.8 Rx Modem Pattern Detectors................................................ 15

5.9 Rx USART .............................................................................. 16

6.

C-BUS Interface and Software Description ...................................... 18

6.1 General Reset Command...................................................... 20

6.2 General Control Register...................................................... 20

6.3 Transmit Mode Register ....................................................... 22

6.4 Receive Mode Register ......................................................... 25

6.5 QAM Modem Command Register ......................................... 27

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

6.7 Rx Data Register ................................................................... 29

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

6.9 QAM Modem Status Register ............................................... 33

6.10 Programming Register.......................................................... 35

7.

Application Notes .............................................................................. 38

8.

Performance Specification................................................................ 39

8.1 Electrical Performance.......................................................... 39

8.1.2 Operating Limits....................................................... 39

8.1.3 Operating Characteristics ........................................ 40

8.2 Packaging.............................................................................. 45

Note: This product is in development: Changes and additions will be made to this specification. Items

marked TBD or left blank will be included in later issues.

Information in this data sheet should not be relied upon for final product design.

© 2003 CML Microsystems Plc

2

D/869/1

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