Smart Embedded Management Agent (Sema) - ADLINK Technology COM Express Express-BL User Manual

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 the SEMA Technical Manual and SEMA Software Manual,
downloadable at: http://www.adlinktech.com/PD/web/PD_detail.php?cKind=&pid=1274
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