
ConnectCore ? f or ? i .M X 5 1 ?
consumption measurements. A different kernel (Linux or Windows CE) with a different driver
configuration will show different current consumption values.
The ConnectCore for 1.MX51 module can be powered from an external battery (VLIO) or from
a battery charger (VCHRG). Current drawn by the modules is different depending on the
supply voltage used. The following tables show the current drawn by the module from the
two power supplies.
The current drawn by the module is highly dependent on the number and type of interfaces
used. To make some current measurements three different interface configurations have
been defined:
Interface Configuration
Minimum
Typical
Maximum
Interfaces Used
Console, Ethernet.
+3.3V of development board drawn from external power supply.
VGA, USB Host (two devices connected), Audio, Ethernet, Console.
+3.3V of development board drawn from module.
Display1, Display2, Camera1, Camera2, USB OTG, USB Host (four devices
connected), Audio, Ethernet, Console, WLAN, SD Card, microSD TM Card.
+3.3V of development board drawn from module.
The ConnectCore for 1.MX51 supports several power modes. The current drawn by the
module is highly dependent on the power modes. To make some current measurements five
different power modes have been defined:
Interface Configuration
Full Load
Normal
User Idle
System Idle
Suspend
Interfaces Used
System running at 100% CPU load.
Normal operating state. User interacting with the device.
After a long period of user inactivity some devices are turned off.
In this state the user is not using the system, even passively, and devices that are
not actively doing work are turned off.
This is the sleep state, no threads are running, the CPU is idle, the peripherals are
turned off, and the system can wake up only by means of hardware wake-source
interrupt.
The tables below show the current drawn by the module for the different power modes and
the different interface configurations.
? ? 2011 ? Digi ? International, ? Inc.
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