TM8100/TM8200 Computer-Controlled Data Interface (CCDI) Protocol Manual CCDI 11
© Tait Electronics Limited April 2007
1CCDI
The Computer Controlled Data Interface (CCDI) protocol is a Tait
proprietary command protocol embedded in the TM8100 and TM8200
radios, and used for communicating with the radio via asynchronous serial
ports and over-air.
The radio is the DCE and is connected directly to the DTE, usually a PC,
via the serial port.
Two modes of operation are available:
■ Command mode
■ Transparent mode
When in Command mode, commands and response messages are passed
between the PC and the radio using the CCDI protocol. CCDI commands
can also be used to obtain GPS data and NMEA messages from the radio.
Refer to “QUERY” and “SEND_ADAPTABLE_SDM”. The baud rate is
set to 1200, 2400, 4800, 9600, 14400, 19200, 28800 or 115200 (TM8200
only) baud, using the programming application.
When in Transparent mode, communication between the PC and the radio
is set to 1200, 2400, 4800, 9600, 14400, 19200, 28800 or 115200 (TM8200
only) baud, using the programming application.
The over-air data rate is 1200 or 2400 bit/s for FFSK data,
12 kbit/s for Tait High Speed Data (THSD) narrow band and wide band,
and can be set to 19200 bit/s for THSD wide band.
Figure 1.1 Modes of operation
PC Serial Port
PC running
terminal application
PC running
terminal application
PC Serial Port
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