System Specification
110120-1000A
47
Electrical
This section provides electrical specifications for the GCM.
PXA320 Processor
Several PXA320 signals are available externally on the GCM. All PXA320 signals
include ESD protection.
The processor provides up to twenty two GPIOs. Up to twelve GPIOs are available on
and the remaining ten GPIOs are available on
. For a
description of the PXA320 GPIOs, see
General-Purpose Inputs and Outputs
, page
also supplies connections to the PXA320 CSI and I
2
C bus. For
descriptions of these interfaces, see
Optional Camera Sensor Interface
, respectively.
provides an external connection to the PXA320 1-Wire interface.
For a description of this interface, see
The integrated PXA320 touch screen controller drives a 4-wire touch panel on header
page
. For a description of this interface, see
Symbol
Parameter
Min
Typ.
Max
Units
GPIO (note 5)
V
CCIO
Input source voltage
3.3
V
V
IH
High-level input voltage
0.8V
CCIO
V
V
IL
Low-level input voltage
0.2V
CCIO
V
V
OH
High-level output voltage (note 6)
0.9V
CCIO
V
V
OL
Low-level output voltage (note 6)
0.1V
CCIO
V
R
PU
Software-selectable pull-ups
(see note 7)
20
45
100
k
Ω
R
PD
Software-selectable pull-downs
(see note 8)
20
45
100
k
Ω
GPIO_RESET#
R
GPIO_RESET#
Pull-up resistance on
GPIO_RESET#
4.7
kΩ
V
GPIO_RESET#
2.8
V
t
PW
Pulse width constraint (note 5)
100
µs
CSI
VCC_CI
Supply voltage
3.3
V
I
2
C
Bus clock (note 9)
100
100
400
kHz
R
SDA,SCK
Pull-up resistance on SDA, SCK
1.2
kΩ
V
SDA,SCK
3.3
V
1-Wire
R
1-WIRE
Pull-up resistance on 1-Wire
5.1
kΩ
V
1-WIRE
3.3
Summary of Contents for PXA320
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