User's Manual

GE910 Hardware User Guide
GE910 Hardware User GuideGE910 Hardware User Guide
GE910 Hardware User Guide
1vv0300962 Rev.9-bis3 2013-05-20
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 65 of 87
Mod. 0805 2011-07 Rev.2
12. General Purpose I/O
The general purpose I/O pads can be configured to act in three different ways:
• input
• output
• alternate function (internally controlled)
Input pads: they report the digital value (high or low) present on the pad at the moment of
reading.
Output pads: can be written, set the output value of the pad, and read.
Alternate function pad: internally controlled by the GE910 firmware and acts depend on
implemented function.
The following table shows the available GPIO on the GE910.
PAD Signal I/O Function Type
Drive
strength
Default
State
Note
C8
GPIO_01 I/O
Configurable
GPIO
CMOS
1.8V
1 mA INPUT PD
Alternate function
STAT LED
C9
GPIO_02 I/O
Configurable
GPIO
CMOS
1.8V
1 mA INPUT PD
C10
GPIO_03 I/O
Configurable
GPIO
CMOS
1.8V
1 mA INPUT PD
C11
GPIO_04 I/O
Configurable
GPIO
CMOS
1.8V
1 mA INPUT PD
B14
GPIO_05 I/O
Configurable
GPIO
CMOS
1.8V
1 mA INPUT PD
Alternate function
RFTXMON
C12
GPIO_06 I/O
Configurable
GPIO
CMOS
1.8V
1 mA INPUT PD
C13
GPIO_07 I/O
Configurable
GPIO
CMOS
1.8V
1 mA INPUT PD
K15
GPIO_08 I/O
Configurable
GPIO
CMOS
1.8V
1 mA INPUT PD
L15
GPIO_09 I/O
Configurable
GPIO
CMOS
1.8V
1 mA INPUT PD
G15
GPIO_10 I/O
Configurable
GPIO
CMOS
1.8V
1 mA INPUT PD
NOTE:
Pull-Up or Pull-Down can be set on every GPIO, see “AT Commands Reference Guide”.
By default at start time, if no previous set were saved, they are set as Input Pull-Down.