TC63i AT Command Set

TC63i AT Command Set
4.9 AT+IPR
4.9 AT+IPR Bit Rate
AT+IPR allows to query and set the bit rate of the TC63i's asynchronous serial interfaces (UART).
The test command returns the values of supported automatically detectable bit rates and the values of the supported
fixed bit rates.
The read command returns the the currently set value.
The write command specifies the bit rate to be used for the interface. Delivery bit rate value () is
115200bps on ASC0 and 115200bps on ASC1. This setting will not be restored with AT&F.
If using a fixed bit rate, make sure that both TC63i and TA are configured to the same rate. A selected fixed bit
rate takes effect after the write command returns OK and is stored in non-volatile memory. It is not recommended
to set bit rates lower than 9600 bps in order to avoid timing problems (see Section 1.5, Communication between
Customer Application and TC63i for details about timing).
In case of autobauding mode (AT+IPR=0) the detected TA bit rate will not be saved and, therefore, needs to be
resynchronized after any restart of the ME (for details refer Section 4.9.1, Autobauding). If autobauding is activated,
the TA will automatically recognize bit rate, character framing and parity format (refer AT+ICF) currently
used by the TE.
In Multiplex mode the write command will not change the bit rate currently used, but the new bit rate will be stored
and becomes active, when the module is restarted.
The current setting of AT+IPR will be preserved when you download firmware (i.e. a firmware update does not
restore the factory setting) or in the event of power failure.
Syntax
Test Command
AT+IPR=?
Response(s)
+IPR: (list of supported auto-detectable s) , (list of supported fixed-only s)
OK
Read Command
AT+IPR?
Response(s)
+IPR:
OK
Write Command
AT+IPR=
Response(s)
OK
ERROR
+CME ERROR:
PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge Last Reference(s)
- + ± - ± ± ± - + - V.250
Parameter Description
(num)(&V)
bit rate per second (bps)
0 Activates autobauding. Not supported on ASC1. See Section 4.9.1, Autobauding
for further details.
300
600
1200
TC63i_ATC_V01.100 Page 116 of 547 11/10/08
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