Chapter 3

Hardware

4th state is a hibernate or suspend-to-disk state (S4).

In this state there are no internal operations taking place, except for the internal RTC. This includes no activity for the RAM, CPU, CD-ROM, or hard disk drives. The XTX 820 appears to be off, including any power LED indicators. Your system will take longer to wake-up in this sleep state, however, since your data is saved to the disk, it is more secure and should not be lost in the event of a power failure.

To enter a hibernate or suspend-to-disk state, the XTX 820 must be fully powered on and the OS transitions the XTX 820 into this sleep state (S4) under user control.

To exit this sleep state a wake up event, such as the Power-On switch, is used to wake up the XTX 820 and restore full operation, including any power LED indicators. Typically, pressing the Power-On switch for less than 4 seconds (default) will restore full operation.

5th state is the normal power Off or shutdown (S5).

All activity stops except the internal clock, unless the power cord is removed from the power source.

To go to a fully powered down state (soft off), the XTX 820 must either be powered On, or in a sleep state, and then the Power-On switch is pressed for more than 4-to-6 seconds.

To go to a fully powered up state, press the Power-On switch for less than 4 seconds (default) and full operation is restored.

The OS may provide additional programming features to change the activation time for each state, and to shutdown or transition the XTX 820 at certain times. Refer to the OS vender’s documentation for power management under the ACPI standard.

Wake Up Activities

The wake up events listed in Table 3-31 can be used to wake up the XTX 820 from S3 or any of the other states mentioned.

Table 3-31. Wake Up Activities and Conditions

Signal/Device

Condition

SMBALRT*

When set to Always

 

 

GEP2* (RI*)

If this pin is configured as Sleep button in BIOS Setup.

 

 

GEP1*

If this pin is configured as a LID switch in BIOS Setup and used to transition

 

to S3. A release of this signal wakes the system from S3.

PCE_WAKE*

When set to Always

 

 

Integrated LAN

The LAN driver configuration allows the system to wake from S3/S4 and

 

even S5 through direct addressing, magic packets, or link status changes.

PS/2 Keyboard &

If powered by standby voltage on baseboard.

Mouse

 

Integrated USB

If configured as S3/S4 wake device in BIOS Setup and if powered by

 

standby voltage. Example, USB mouse could wake the system.

PME*

Activated by Windows ACPI system if the PCI driver indicates that it

 

manages a device capable of waking up the system.

Note: The signals marked with * = Negative true logic.

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Reference Manual

XTX 820

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Ampro Corporation XTX 820 manual Wake Up Activities, Signal/Device Condition, GEP1

XTX 820 specifications

Ampro Corporation has made a significant mark in the world of embedded systems with its versatile XTX 820 embedded computing module. The XTX 820 is designed to cater to a wide array of applications, ranging from industrial automation to medical devices, providing developers with a powerful yet compact solution.

One of the standout features of the XTX 820 is its advanced processing capabilities. The module is equipped with an Intel Atom processor, which delivers impressive performance while operating at low power levels. This combination makes the XTX 820 suitable for environments where energy efficiency is essential. The Atom processor allows for seamless multitasking and support for demanding applications without compromising on thermal efficiency.

In terms of memory, the XTX 820 supports a range of configurations, accommodating both DDR2 and DDR3 memory types. With a maximum of up to 4GB of onboard memory, this module ensures that applications can run smoothly and efficiently across various tasks. The flexibility in memory options enables developers to tailor their designs according to specific project needs.

Connectivity is another strong suit of the XTX 820. The module comes with multiple I/O interfaces that enhance its utility in various applications. It features USB, Serial, and Parallel ports, along with support for LVDS display and audio interfaces. This diverse range of connectivity options allows the XTX 820 to integrate easily with a variety of systems and devices, facilitating seamless data transfer and communication.

Security is increasingly critical in embedded systems, and Ampro has integrated robust security features into the XTX 820. This includes support for hardware-based security solutions, which can protect sensitive data and prevent unauthorized access. Such characteristics make the module a suitable choice for industries where data integrity is paramount.

Furthermore, the XTX 820 boasts an impressive range of environmental operating conditions. It is designed to function in extreme temperatures, making it suitable for outdoor and industrial applications where fluctuations in temperature can be a concern.

In conclusion, the Ampro Corporation XTX 820 embedded computing module emerges as a versatile platform that combines performance, memory flexibility, robust connectivity, and enhanced security features. Its design is tailored to meet the demands of various industries, making it a reliable choice for developers looking for advanced embedded solutions.