Intel S1400FP - 4. Power Subsystems; 4.1 Threshold-based Voltage Sensors

System Event Log Troubleshooting Guide for EPSD Platforms Based on Intel
®
Xeon
®
Processor E5 4600/2600/2400/1600/1400 Product Families
Power Subsystems
Revision 1.1 Intel order number G90620-002 27
4. Power Subsystems
The BMC monitors the power subsystem including power supplies, select onboard voltages, and related sensors.
4.1 Threshold-based Voltage Sensors
The BMC monitors the main voltage sources in the system, including the baseboard, memory, and processors, using IPMI-compliant
analog/threshold sensors. Some voltages are only on specific platforms. For details check your platforms Technical Product
Specification (TPS).
Note: A voltage error can be caused by the device supplying the voltage or by the device using the voltage. For each sensor it will be
noted who is supplying the voltage and who is using it.
Table 11: Threshold-based Voltage Sensors Typical Characteristics
Byte
Field
Description
11
Sensor Type
02h = Voltage
12
Sensor Number
See Table 13
13
Event Direction and
Event Type
[7] Event direction
0b = Assertion Event
1b = Deassertion Event
[6:0] Event Type = 01h (Threshold)
14
Event Data 1
[7:6] – 01b = Trigger reading in Event Data 2
[5:4] – 01b = Trigger threshold in Event Data 3
[3:0] – Event Triggers as described in Table 12
15
Event Data 2
Reading that triggered event
16
Event Data 3
Threshold value that triggered event
The following table describes the severity of each of the event triggers for both assertion and deassertion.