Calling Line Identifier with VMWI
CMX612
CONTENTS
Section
Page
1.0
1.1
1.2
1.3
1.4
1.5
Features and Applications
.......................................................... 1
Brief Description
............................................................................ 1
Block Diagram
................................................................................. 3
Signal List
......................................................................................... 4
External Components
................................................................... 6
General Description
...................................................................... 7
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
Mode Control Logic
................................................................ 7
Input Signal Amplifier
............................................................. 7
Bandpass Filter
....................................................................... 8
Level Detector
......................................................................... 8
FSK Demodulator....................................................................
9
FSK Data Retiming..................................................................
9
Tone Alert Detector...............................................................
10
Dial Tone Detector
................................................................ 11
Ring or Line Polarity Reversal Detector
.............................. 12
Xtal Osc and Clock Dividers.................................................
13
1.6
Application Notes
........................................................................ 14
1.6.1
1.6.2
1.6.3
'On-Hook' Operation
............................................................. 14
'Off-Hook' Operation
............................................................. 17
VMWI Operation
.................................................................... 19
1.7
Performance Specification
....................................................... 21
1.7.1
1.7.2
Electrical Performance..........................................................
21
Packaging..............................................................................
26
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.
©
2002 Consumer Microcircuits Limited
2
D/612/3
CMLMICRO [ CML MICROCIRCUITS ]
