User Manual

GE863-PRO
3
Hardware User Guide
1vv0300773a Rev. 1 DRAFT - 24/04/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 66 of 82
10 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)
The following 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.