CMX808AE3 CML Microcircuits, CMX808AE3 Datasheet - Page 13

• Manufacturer Part Number: CMX808AE3
• Description: Family Radio CTCSS Type 2 Encoder and Decoder
• Manufacturer: CML Microcircuits

The flow chart shows the tone cloning routine. The first programmed tone set ($0-$6) will decode after
Family Radio CTCSS 'Type 2' Encoder and Decoder
typically 140ms, subsequent tone sets will decode almost instantly (i.e. the information is available at the
Reply Data Output in less than 100 s).
Note: $8X and $9C is the Hex address/command.
1999 Consumer Microcircuits Limited
No
Program Bandwidth
Enable IRQ Mask
Cloning $9C=$01
Addresses $0-$6
Wait for Interrupt
Addresses $0-$6
Enable Decoder
Program Tones
Program Tones
Figure 4 Tone Cloning
Tone Decoded
Register ($81)
Mask Interrupt
Register ($81)
Programmed
Programmed
Enable Tone
Read Status
Read Status
$80=$7D
($84) into
$80=$7C
($84) into
Tone?
Tone?
Is it a
Is it a
No
Yes
13
Yes
Tone Decoded
CMX808A
D/808A/5