User's Manual

GC864 Hardware User Guide
1vv0300874 Rev.0 – 2010-01-25
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved. Page 46 of 64
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 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 GC864-QUAD
V2 / GC864-DUAL V2 firmware and acts depending on the function implemented.
The following GPIO are available on the GC864-QUAD V2 / GC864-DUAL V2:
Pin Signal I/O Function Type
Input / output
current
Default
state
ON_OFF
state
During
Reset
state
Note
70 TGPIO_01 I/O
GPIO01
Configurable GPIO
CMOS 2.8V 1uA / 1mA INPUT 0 0
74
TGPIO_02 /
JDR
I/O
GPIO02
Configurable GPIO
CMOS 2.8V 1uA / 1mA INPUT 0 0
Alternate
function
(JDR)
66 TGPIO_03 I/O
GPIO03
Configurable GPIO
CMOS 2.8V 1uA / 1mA INPUT 0 0
59
TGPIO_04 /
TXCNTRL
I/O
GPIO04
Configurable GPIO
CMOS 2.8V 1uA / 1mA INPUT 0 0
Alternate
function (RF
Transmission
Control)
78
TGPIO_05 /
RFTXMON
I/O
GPIO05
Configurable GPIO
CMOS 2.8V 1uA / 1mA INPUT 0 0
Alternate
function
(RFTXMON)
68
TGPIO_06 /
ALARM
I/O
GPIO06
Configurable GPIO
CMOS 2.8V 1uA / 1mA INPUT 0 0
Alternate
function
(ALARM)
73
TGPIO_07 /
BUZZER
I/O
GPIO07
Configurable GPIO
CMOS 2.8V 1uA / 1mA INPUT 0 0
Alternate
function
(BUZZER)
67 TGPIO_08 I/O
GPIO08
Configurable GPIO
CMOS 2.8V 1uA / 1mA INPUT 0 0
76 TGPIO_09 I/O
GPIO09
Configurable GPIO
CMOS 2.8V 1uA / 1mA INPUT 0 0
63
TGPIO_10 /
DVI_TX
I/O
GPIO10
Configurable GPIO
CMOS 2.8V 1uA / 1mA INPUT 0 0
Alternate
function
(DVI_TX)