GE863-PRO3 Hardware User Guide
1vv0300773a Rev. 0 - 24/01/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 50 of 64
The general purpose I/O pads can be configured to act in three different ways:
• input
• output
• alternate function (internally controlled)
The following GSM/GPRS engine GPIO are available on the GE863-PRO3:
Ball Signal I/O Function Type
Input /
output
current
Default
State
ON/OFF
state
State
during
Reset
Note
E6 GPIO1 I/O GPIO01 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW Alternate function
(JDR)
55 GPIO2 I/O GPIO02 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT HIGH HIGH 4.7K Pull Up
32 GPIO3 I/O GPIO03 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW Alternate function
(RFTXMON)
53 GPIO4 I/O GPIO05 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW Alternate function
(BUZZER)
54 GPIO5 I/O GPIO06 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW
51 GPIO6 I/O GPIO07 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW
6 GPIO7 I/O GPIO08 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW
Alternate function
(RF Transmission
Control)
5 GPIO8 I/O GPIO09 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW
4 GPIO9 I/O GPIO10 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW
Input pads can only be read and 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 GE863-PRO3 firmware and acts depending on the function
implemented.
All GPIO pads are 2.8V CMOS signals and their interface levels are the same specified in the
paragraph 6.5.