
CTCSS Signalling Processor
FX818
1997
Consumer Microcircuits Limited
2
D/818/4
CONTENTS
Section
Page
1.0 Features ..........................................................................................................1
1.2 Block Diagram................................................................................................3
1.3 Signal List.......................................................................................................4
1.3 Signal List.......................................................................................................4
1.4 External Components....................................................................................6
1.4 External Components....................................................................................6
1.5 General Description.......................................................................................7
1.5.1 Software Description
.....................................................................7
1.6 Application Notes.........................................................................................18
1.6.1 General
..........................................................................................18
1.6.2 Transmitter
...................................................................................18
1.6.3 Receiver (Decode)
........................................................................18
1.6.4 Receiver (Fast Detect)
.................................................................19
1.6.5 General Purpose Timer
................................................................19
1.6.6 Tx / Fast Rx Tone Table
...............................................................19
1.6.7 Rx Program Tone Table
...............................................................20
1.7 Performance Specification..........................................................................21
1.7.1 Electrical Performance
................................................................21
1.7.2 Packaging
.....................................................................................26
Note:
As this product is still in development, it is likely that a number of changes and additions will be made to
this specification. Items marked TBD or left blank will be included in later issues.