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5 Smart Embedded Management Agent (SEMA)

The onboard microcontroller (BMC) implements power sequencing and Smart Embedded Management Agent (SEMA) functionality. The

microcontroller communicates via the System Management Bus with the CPU/chipset. The following functions are implemented:

• Total operating hours counter. Counts the number of hours the module has been run in minutes.

• On-time minutes counter. Counts the seconds since last system start.

• Temperature monitoring of CPU and board temperature. Minimum and maximum temperature values of CPU and board are stored

in flash.

• Power cycles counter

• Boot counter. Counts the number of boot attempts.

• Watchdog Timer (Type-II). Set / Reset / Disable Watchdog Timer. Features auto-reload at power-up.

• System Restart Cause. Power loss / BIOS Fail / Watchdog / Internal Reset / External Reset

• Fail-safe BIOS support. In case of a boot failure, hardware signals tells external logic to boot from fail-safe BIOS.

• Flash area. 1kB Flash area for customer data

• 128 Bytes Protected Flash area. Keys, IDs, etc. can be stored in a write- and clear-protectable region.

• Board Identify. Vendor / Board / Serial number / Production Date

• Main-current & voltage. Monitors drawn current and main voltages

For a detailed description of SEMA features and functionality, please refer to SEMA Technical Manual and SEMA Software Manual,

downloadable at:

http://www.adlinktech.com/sema/.

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Adlink Express-HLE Manual do Utilizador Página 40