ADLINK Technology AmITX-RZ-G, Руководство пользователя

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AmITX-RZ-G
Smart Embedded Management Agent (SEMA)
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6. 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 tell 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 on the ADLINK web site: www.adlinktech.com .
6.1. Board Specific SEMA Functions
6.1.1. Voltages
The BMC implements a voltage monitor and samples several onboard voltages. The voltages can be read by
calling the SEMA function “Get Voltages”. The function returns a 16-bit value divided into high-byte (MSB) and low-
byte (LSB).
Table 3: SEMA Onboard Voltage Monitor
ADC
Channel
Voltage Name
1 VIN(12V)
2 5VSB
3 RTC