Chapter 3

Hardware

To ensure the impact on processor performance is reduced to a minimum, the TCC can only be active for short periods of time, which requires a properly designed thermal solution. The Intel Pentium/Celeron M processor datasheet can provide you with more information.

The thermal trip signal is used by Intel's Pentium/Celeron M processors for catastrophic thermal protection. If the processor's silicon reaches a temperature of approximately 125°C then the processor's thermal trip signal will go active and the system will automatically shut down to prevent any damage to the processor as a result of overheating. The thermal trip signal activation is completely independent from processor activity and therefore does not produce any bus cycles.

NOTE

An ATX power supply is required to make use of the thermal trip

 

signal and automatically switch off the system.

Watchdog Timer (WDT)

The watchdog timer (WDT) restarts the system if an error or mishap occurs, allowing the system to recover from the mishap, even though the error condition may still exist. Possible problems include failure to boot properly, the application software’s loss of control, failure of an interface device, unexpected conditions on the bus, or other hardware or software malfunctions.

The WDT (watchdog timer) can be used both during the boot process and during normal system operation.

•During the Boot process – If the operating system fails to boot in the time interval set in the BIOS, the system will reset.

The watchdog timer (WDT) is enabled and configured in the BIOS Setup Utility screen, Advanced BIOS Features. Set the WDT for a time-out interval in seconds or minutes (between 30 sec to 30 min) in the Advanced BIOS Features screen. Ensure you allow enough time for the boot process to complete and for the OS to boot. The OS or application must tickle (reset) the WDT before the timer expires. This can be done by accessing the hardware directly or through a BIOS call.

•During System Operation – An application can set up the WDT hardware through a BIOS call, or by accessing the hardware directly. Some Ampro Board Support Packages provide an API interface to the WDT. The application must tickle (reset) the WDT before the timer expires or the system will be reset.

•Watchdog Setup – Ampro has provided a System Utility which helps you set up the WDT. The System Utility and its user guide are located on the XTX 820 Doc & SW CD-ROM. Refer also to Ampro's Watchdog Timer Application Note.

XTX 820

Reference Manual

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Ampro Corporation XTX 820 manual Watchdog Timer WDT
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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.
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