User's Manual

GL865-DUAL/QUAD V3 Hardware User Guide
1vv0301018 Rev.7 – 2013-10-30
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved. Page 49 of 78
Mod. 0805 2011-07 Rev.2
11. 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 can be read; they report the digital value (high or low) present on the pad at the
read time .
Output pads can only be written or queried and set the value of the pad output.
An alternate function pad is internally controlled by the GL865-DUAL/QUAD V3 firmware
and acts depending on the function implemented.
For Logic levels please refer to chapter 8.
The following table shows the available GPIO on the GL865-DUAL/QUAD V3.
Pin Signal I/O Function Type Input /
output
current
Default
State
ON_OFF
state
State
during
Reset
Note
42 GPIO_01 I/O Configurable GPIO
CMOS
1.8V
1uA/1mA INPUT 0 0
Alternate function
DVI_WA0
41 GPIO_02 I/O Configurable GPIO
CMOS
1.8V
1uA/1mA INPUT 0 0
Alternate function
JDR and DVI_RX
40 GPIO_03 I/O Configurable GPIO
CMOS
1.8V
1uA/1mA INPUT 0 0
Alternate function
DVI_TX
39 GPIO_04 I/O Configurable GPIO
CMOS
1.8V
1uA/1mA INPUT 0 0
Alternate function
TX Disable and
DVI_TX
29 GPIO_05 I/O Configurable GPIO
CMOS
1.8V
1uA/1mA INPUT 0 0
Alternate function
RFTXMON
28 GPIO_06 I/O Configurable GPIO
CMOS
1.8V
1uA/1mA INPUT 0 0
Alternate function
ALARM
27 GPIO_07 I/O Configurable GPIO
CMOS
1.8V
1uA/1mA INPUT 0 0
Alternate function
BUZZER
26 GPIO_08 I/O Configurable GPIO
CMOS
1.8V
1uA/1mA INPUT 0 0
Alternate function
STAT_LED
WARNING:
During power up the GPIOs may be subject to transient glitches.