User's Manual
GE864
GE864GE864
GE864-
--
-QUAD Automotive V2 Hardware User Guide
QUAD Automotive V2 Hardware User GuideQUAD Automotive V2 Hardware User Guide
QUAD Automotive V2 Hardware User Guide
1vv0300840 Rev.3 2010-04-08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 48 of 71
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 GE864-QUAD
Automotive V2 firmware and acts depending on the function implemented. For Logic
levels please refer to chapter 8.
The following GPIO are available on the GE864-QUAD Automotive V2:
Ball
BallBall
Ball
Signal
SignalSignal
Signal
I/O
I/OI/O
I/O
Function
FunctionFunction
Function
Type
TypeType
Type
Input /
Input / Input /
Input /
output
output output
output
current
currentcurrent
current
Default
Default Default
Default
State
StateState
State
State
StateState
State
during
during during
during
Reset
ResetReset
Reset
Note
NoteNote
Note
B3
B3B3
B3
GPIO_04 I/O
GPIO04 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT x
Alternate function (RF
Transmission Control)
B5
B5B5
B5
GPIO_06 I/O
GPIO06 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT
HIGH
(see Fig.01)
Alternate function
(ALARM)
E6
E6E6
E6
GPIO_01 I/O
GPIO01 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT x Alternate function (JDR)
H3
H3H3
H3
GPIO_08 I/O
GPIO08 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT x PCM_TX
H5
H5H5
H5
GPIO_02 I/O
GPIO02 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT x PCM_WAO
K7
K7K7
K7
GPIO_03 I/O
GPIO03 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT x PCM_RX
K8
K8K8
K8
GPIO_05 I/O
GPIO05 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT x
Alternate function
(RFTXMON)
L9
L9L9
L9
GPIO_07 I/O
GPIO07 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT x
Alternate function
(BUZZER)
D7
D7D7
D7
GPIO_09 /
PCM_CLK
I/O
GPIO09 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT x PCM audio *
x
xx
x = undefined status
= undefined status = undefined status
= undefined status
Not all GPIO pads support all these three modes:
• GPIO1 supports all three modes and can be input, output, Jamming Detect
Output (Alternate function)
• GPIO4 supports all three modes and can be input, output, RF Transmission
Control (Alternate function)
• GPIO5 supports all three modes and can be input, output, RFTX monitor output
(Alternate function)
• GPIO6 supports all three modes and can be input, output, alarm output
(Alternate function)
• GPIO7 supports all three modes and can be input, output, buzzer output
(Alternate function)