ADLINK cExpress-BL - Manual (Page 37)

cExpress-BL Page 37
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/.