Tait TM8100 mobiles, Руководство по протоколу

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TM8100/TM8200 Computer-Controlled Data Interface (CCDI) Protocol Manual CCDI 13
© Tait Electronics Limited April 2007
1.2.2 Logic Level Compatibility
The following table show the compatibility of the radio’s digital I/O used
for CCDI with common industry logic standards.
Digital Input
Compatibility and
Tolerance
Digital Output
Compatibility
1.2.3 GPS Port
The GPS receiver/antenna is also connected to an asynchronous serial port
and must be different to the CCDI UART Port. The GPS receiver/antenna
is set in the Data form of the programming application, GPS tab, and can be
set to Mic, Aux or Internal Options.
If set to Aux, the GPS receiver will send NMEA messages to the radio via
the AUX_RXD line on the auxiliary connector.
If set to Internal Options, the GPS receiver will send NMEA messages to
the radio via the IOP_RXD line on the internal options connector.
1.2.4 MAP27 Port
MAP27 data transmission and reception also requires an asynchronous serial
port and must be different to the CCDI UART Port. The MAP27 port is
set in the Data form of the programming application, MAP27 tab, and can
be set to Mic, Aux or Internal Options.
If set to Mic, the radio will use the MIC_TXD and MIC_RXD lines on the
microphone connector.
Digital Input
Line
Logic standard input compatibility and tolerance
3.3V CMOS 5V CMOS 5V TTL RS-232
AUX_RXD Yes Yes Yes Yes
IOP_RXD Yes Yes Yes No
a
a. Level compatible but not tolerant. Inputs can be made RS-232 tolerant by using 3.3k
Ω
series
resistance inserted at the radio end.
CH_RXD
MIC_RXD
PRG_RXD Yes Yes Yes Yes
Digital Output
Line
Logic standard input compatibility and tolerance
3.3V CMOS 5V CMOS 5V TTL RS-232
AUX_TXD Yes No Yes No
IOP_TXD Yes No
a
a. These outputs can be made 5V CMOS compatible using a 3.3k
Ω
pull-up resistor to 5V that is
provided by the device being driven.
Yes No
CH_TXD
MIC_TXD
PRG_TXD Yes No Yes No