CMX624 CML Microcircuits, CMX624 Datasheet - Page 2

• Manufacturer Part Number: CMX624
• Description: V.23-Bell 202 Modem
• Manufacturer: CML Microcircuits

V23 / Bell 202 Modem
Note: This product is in development: Changes and additions will be made to this specification. Items
2001 Consumer Microcircuits Limited
Section
1.1
1.2
1.3
1.4
1.5
1.6
1.7
marked TBD or left blank will be included in later issues.
Brief Description .......................................................................................1
Block Diagram ...........................................................................................3
Signal List...................................................................................................4
External Components ...............................................................................6
General Description ..................................................................................6
1.5.1
1.5.2
1.5.3
1.5.4
1.5.5
1.5.6
1.5.7
1.5.8
1.5.9
1.5.10 Tx/Rx UART.................................................................................11
1.5.11 ‘C-BUS’ Interface........................................................................13
1.5.12 ‘C-BUS’ Registers ......................................................................14
Application Notes....................................................................................14
1.6.1
1.6.2
Performance Specification.....................................................................19
1.7.1
1.7.2
Xtal Osc and Clock Dividers.......................................................6
Rx Input Amplifier ........................................................................7
Receive Filter and Equaliser.......................................................7
FSK Demodulator.........................................................................8
Rx Energy Detector .....................................................................8
FSK / DTMF Modulator ................................................................8
Transmit Filter ..............................................................................9
Transmit Output Buffer .............................................................10
Ring Signal Detector..................................................................10
Line Interface..............................................................................15
Ring Detector Interface .............................................................17
Electrical Performance..............................................................19
Packaging....................................................................................24
CONTENTS
2
Page
CMX624
D/624/6