Fortec Star CM1-BT1, Manual

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40 Using the Module
4.1.1 Board specific SEMA functions
Voltages
The BMC of the CMx-BTx implements a Voltage Monitor and samples several Onboard Volt-
ages. The Voltages can be read out by calling the SEMA function <Get Voltages>. The function
returns a 16-bit value divided in High-Byte (MSB) and Low-Byte (LSB).
The following table defines the voltages read out by the Voltage Monitor.
Table 4-1: BMC Readable Voltages
Main Current
The BMC of the CMx-BTx implements a Current Monitor, which allows the user to read the cur-
rent by calling the SEMA function “Get Main Current”. The function returns four 16-bit values
divided in Hi-Byte (MSB) and Lo-Byte (LSB). These four values represent the last four currents
drawn by the board. The values are sampled every 250ms. The order of the four values is NOT
in relationship to time. The access to the BMC may increase the drawn current of the whole sys-
tem. In this case, you still have three samples without the influence of the read access.
Main Current = (MSB_n<<8 + LSB_n) * 2.014mA
TS# Events
TS# is activated by a temperature sensor when a device reaches its critical temperature and
released when the device is back in its normal temperature range. This counter gives the user
information about temperature or cooling issues. This counter is cleared when the system is
removed from power. The CMx-BTx only monitors the board temperature.
Channel# Signal Voltage Formula
0 +VCORE (MSB<<8 + LSB) * 3.3 / 4096
1 +VNN (Graphics Core) (MSB<<8 + LSB) * 3.3 / 4096
2 +VDDQ (Memory) (MSB<<8 + LSB) * 3.3 / 4096
3 +V1P0A (Interfaces) (MSB<<8 + LSB) * 3.3 / 4096
4 +V1P5S (HD Audio Interface) (MSB<<8 + LSB) * 3.3 / 4096
5 +V3P3A (MSB<<8 + LSB) * 1.100 * 3.3 / 4096
6 +V5P0_SBY (MSB<<8 + LSB) * 1.2055 * 3.3 / 4096
7 +V5P0_ATX (MSB<<8 + LSB) * 1.2055 * 3.3 / 4096
8 +V3P3_ATX (MSB<<8 + LSB) * 1.100 * 3.3 / 4096
9 +V3P3_PCI (MSB<<8 + LSB) * 1.100 * 3.3 / 4096
10 (MAINCURRENT) Use Main Current Function