the user saves the settings and exits the BIOS Setup Program using the X key feature.
After the X function has been invoked, the CMOS Data is stored in a dedicated
non-volatile CMOS Data Backup area located in the BIOS Flash ROM chip as well as
RTC. The CMOS Data is written to and read back from the CMOS Data Backup area in
order to verify that the write procedure was successful. Once verified the X key Save
and Exit function continues to perform some minor processing tasks and finally reaches
an automatic reset point, which instructs the module to reboot. After the Automatic
Reset has been triggered the congatec module can be powered off and, if need be,
removed from the baseboard without losing the new CMOS settings.
5.4 Security Feature
The conga-XLX can be equipped optionally with a “Trusted Platform Module“ (TPM 1.2).
This TPM 1.2 includes co-processors to calculate efficient hash and RSA algorithms
with key lengths up to 2,048 bits as well as a real random number generator. Security
sensitive applications like gaming and e-commerce will benefit also with improved
authentication, integrity and confidence levels.
5.5 congatec Battery Management Interface
In order to facilitate the development of battery powered mobile systems based on
embedded modules, congatec AG has defined an interface for the exchange of data
between a CPU module (using an ACPI operating system) and a Smart Battery system.
A system developed according to the congatec Battery Management Interface
Specification can provide the battery management functions supported by an ACPI
capable operating system (e.g. charge state of the battery, information about the
battery, alarms/events for certain battery states, ...) without the need for any additional
modifications to the system BIOS.
The conga-XLX BIOS fully supports this interface. For more information about this
subject visit the congatec website and view the following documents:
congatec Battery Management Interface Specification
Battery System Design Guide
conga-SBM² User’s Guide
Copyright © 2006 congatec AG
X800m12
30/72
