Thermal Margin Sensors; Table 38: Thermal Margin Sensors Typical Characteristics - Intel S1400FP Manual

System Event Log Troubleshooting Guide for EPSD Platforms Based on Intel
Sensor Sensor Name
Number
23h Baseboard Temperature 2
24h Baseboard Temperature 3
25h Baseboard Temperature 4
26h I/O Mod Temp
27h PCI Riser 1 Temp
28h IO Riser Temp
2Ch PCI Riser 2 Temp
2Dh SAS Mod Temp
2Eh Exit Air Temp
2Fh LAN NIC Temp
5.2.2

Thermal Margin Sensors

Margin sensors are also linear sensors but typically report a negative value. This is not an actual temperature, but in fact an offset to
a critical temperature. Values reported are seen as number of degrees below a critical temperature for the particular component.
The BMC supports DIMM aggregate temperature margin IPMI sensors. The temperature readings from the physical temperature
sensors on each DIMM (such as, Temperature Sensor on DIMM, or TSOD) are aggregated into IPMI temperature margin sensors for
groupings of DIMM slots, the partitioning of which is platform/SKU specific and generally corresponding to fan domains.
The BMC supports global aggregate temperature margin IPMI sensors. There may be as many unique global aggregate sensors as
there are fan domains. Each sensor aggregates the readings of multiple other IPMI temperature sensors supported by the BMC FW.
The mapping of child-sensors into each global aggregate sensor is SDR-configurable. The primary usage for these sensors is to
trigger turning off fans when a lower threshold is reached.
Revision 1.1
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Table 38: Thermal Margin Sensors Typical Characteristics

Byte Field
11 Sensor Type 01h = Temperature
12 Sensor Number See Table 40
Intel order number G90620-002
Xeon Processor E5 4600/2600/2400/1600/1400 Product Families
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