Digital Line to POTS Interface
CMX605
CONTENTS
Section
Page
1.1
1.2
1.3
1.4
1.5
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
Xtal Osc and Clock Dividers...................................................
7
Uncommitted Amplifier...........................................................
7
Tone/FSK Encoder and Tone Encoder
.................................. 7
SPM Generator
...................................................................... 10
Transmit Operator.................................................................
10
Tx UART
................................................................................ 10
DTMF Tone Decoder
............................................................. 12
‘C-BUS’ Interface...................................................................
13
‘C-BUS’ Registers
................................................................. 14
1.6
Application Notes
........................................................................ 15
1.6.1
1.6.2
Telecom Tones ....................................................................... 15
C-BUS Timing......................................................................... 19
1.7
Performance Specification
....................................................... 22
1.7.1
1.7.2
Electrical Performance..........................................................
22
Packaging..............................................................................
26
©
2001 Consumer Microcircuits Limited
2
D/605/6
CMLMICRO [ CML MICROCIRCUITS ]
