LISA-U2 series - System integration manual
UBX-13001118 - R27
System description
Page 103 of 183
C1-Public
The pin can be connected on the application board to an input pin of an application processor to
provide a digital signal.
Pad disabled:
All the GPIOs can be configured in tri-state with an internal active pull-down enabled, as a not used
pin, setting the parameter <gpio_mode> of the +UGPIOC AT command to 255.
The “Pad disabled” mode can be provided on more than one pin per time: it is possible to
simultaneously set the same mode on another pin (also on all the GPIOs).
The pin configured to provide the “Pad disabled” function is set as
•
Tri-state with an internal active pull-down enabled
describes the configurations of all the GPIO pins.
Pin
Name
Description
Remarks
20
GPIO1
GPIO
By default, the pin is configured as Pad disabled.
Can be alternatively configured by the AT+UGPIOC command as:
•
Output
•
Input
•
Network Status Indication
•
GNSS Supply Enable
•
GSM Tx Burst Indication
•
Module Status Indication
21
GPIO2
GPIO
By default, the pin is configured to provide GNSS Supply Enable function.
Can be alternatively configured by the +UGPIOC command as:
•
Output
•
Input
•
Network Status Indication
•
Pad disabled
23
GPIO3
GPIO
By default, the pin is configured to provide GNSS Data Ready function.
Can be alternatively configured by the +UGPIOC command as:
•
Output
•
Input
•
Network Status Indication
•
GNSS Supply Enable
•
Last Gasp
•
Pad disabled
24
GPIO4
GPIO
By default, the pin is configured to provide GNSS RTC sharing function.
Can be alternatively configured by the +UGPIOC command as:
•
Output
•
Input
•
Network Status Indication
•
GNSS Supply Enable
•
Pad disabled
51
GPIO5
GPIO
By default, the pin is configured to provide SIM card detection function.
Can be alternatively configured by the +UGPIOC command as:
•
Output
•
Input
•
Network Status Indication
•
GNSS Supply Enable
•
Module Operating Mode Indication
•
Pad disabled
39
I2S1_RXD /
GPIO6
2
nd
I2S receive data /
GPIO
By default, the pin is configured as 2
nd
I2S receive data input.
Can be alternatively configured by the +UGPIOC, +USPM commands as:
•
Output
•
Input
•
Pad disabled
