LISA-U2 series - System integration manual
UBX-13001118 - R27
System description
Page 54 of 183
C1-Public
1.9.1
Serial interfaces configuration
UART, USB and SPI/IPC serial interfaces are available through the AT command interface and for
Packet-Switched / Circuit-Switched Data communication. The serial interfaces are configured as
described in
(for information about further settings, see the u-blox AT commands
Interface
AT Settings
Comments
UART interface
Enabled
Multiplexing mode can be enabled by AT+CMUX command providing following
channels:
•
Channel 0: control channel
•
Channel 1
–
5: AT commands / data connection
•
Channel 6: GNSS tunneling
•
Channel 7: SAP (SIM Access Profile)
AT+IPR=0
One-shot autobauding enabled by default
AT+ICF=0
One-shot frame format recognition enabled by default
AT&K3
HW flow control enabled
AT&S1
DSR line set ON in data mode and set OFF in command mode
7
AT&D1
Upon an ON-to-OFF transition of DTR, the DCE enters online command mode and
issues an OK result code
AT&C1
Circuit 109 changes in accordance with the carrier detect status; ON if the carrier is
detected, OFF otherwise
USB interface
Enabled
6 CDCs are available, configured as described in the following list:
•
USB1: AT commands / data connection
•
USB2: AT commands / data connection
•
USB3: AT commands / data connection
•
USB4: GPS tunneling
•
USB5: Primary TraceLog
•
USB6: Secondary TraceLog
•
USB7: SAP (SIM Access Profile)
AT&K3
HW flow control enabled
AT&S1
DSR line set ON in data mode and set OFF in command mode
AT&D1
Upon an ON-to-OFF transition of the DTR, the DCE enters online command mode and
issues an OK result code
AT&C1
Circuit 109 changes in accordance with the carrier detect status; ON if the carrier is
detected, OFF otherwise
SPI interface
Enabled
Multiplexing mode can be enabled by AT+CMUX command providing following
channels:
•
Channel 0: control channel
•
Channel 1
–
5: AT commands / data connection
•
Channel 6: GNSS tunneling
•
Channel 7: SAP (SIM Access Profile)
AT&K3
HW flow control enabled
AT&S1
DSR line set ON in data mode and set OFF in command mode
AT&D1
Upon an ON-to-OFF transition of the DTR, the DCE enters online command mode and
issues an OK result code
AT&C1
Circuit 109 changes in accordance with the carrier detect status; ON if the carrier is
detected, OFF otherwise
Table 26: Default serial interfaces configuration
7
See u-blox AT commands manual
for the definition of the interface data mode, command mode and online command mode.