User`s guide
Copyright © 2008 congatec AG B915m10 27/92
Additional Features5
Watchdog5.1
The conga-B915 is equipped with a multi stage watchdog solution that is triggered by software. The COM Express™ Specication does not
provide support for external hardware triggering of the Watchdog, which means the conga-B915 does not support external hardware triggering.
For more information about the Watchdog feature see the BIOS setup description section 9.4.13 of this document and application note
AN3_Watchdog.pdf on the congatec AG website at www.congatec.com.
Onboard Microcontroller5.2
The conga-B915 is equipped with an ATMEL Atmega168 microcontroller. This onboard microcontroller plays an important role for most of the
congatec BIOS features. It fully isolates some of the embedded features such as system monitoring or the I²C bus from the x86 core architecture,
which results in higher embedded feature performance and more reliability, even when the x86 processor is in a low power mode.
Embedded BIOS5.3
The conga-B915 is equipped with congatec Embedded BIOS and has the following features:
ACPI Power Management•
ACPI Battery Support•
Supports Customer Specic CMOS Defaults•
Multistage Watchdog•
User Data Storage•
Manufacturing Data and Board Information•
OEM Splash Screen•
Flat Panel Auto Detection and Backlight Control•
BIOS Setup Data Backup (see section 5.3.1)•
Exclusive PCI Interrupts•
Fast Mode I²C Bus•