Fastrack M1306B User Guide
Functional Description
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WM_PRJ_M13_UGD_001 -003 November 11, 2006
• Data Terminal Ready (CT108-2/DTR),
• Data Set Ready (CT107/DSR),
• Data Carrier Detect (CT109/DCD),
• Ring Indicator (CT125/RI).
FASTRACK
M1306B
(DCE)
DTE
CT103 / TX
CT108-2 / DTR
CT105 / RTS
CT104 / RX
CT106 / CTS
CT107 / DSR
CT109 / DCD
CT125 / RI
Figure 14: RS232 Serial Link signals
RS232 interface has been designed to allow flexibility in the use of the serial interface
signals. However, the use of TX, RX, CTS and RTS signals is mandatory, which is not
the case for DTR, DSR, DCD and RI signals which can be not used.
7.3.2 Autobauding Mode
The autobauding mode allows the M1306B to detect the baud rate used by the DTE
connected to the RS232 serial link.
Autobauding mode is controlled by AT commands. See "AT Commands Interface
Guide" [7] for details on this function.
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