Datasheet

Document ID Number: 328209 003EN Intel
®
Xeon Phi™ Coprocessor Datasheet
77
6.6.3.9 SMC IPMI Discrete Sensors
The SMC’s IPMI discrete sensors are defined here because the meaning of each discrete
bit cannot be easily derived from the SDR definition.
6.6.3.9.1 Sensor Status
The status sensor reports the state of several critical signals on the card such as
thermtrip, VR phase, fault, VR hot, UV/OV Alert, and PCI Express* Reset. The sensor is
not mirrored as a register on the in-band register interface.
fan_tach Fan tach read by SMC (N/A for passive SKUs, 5120D).
OTHER
status Critical signal states (described in the datasheet).
Tcritical Thermal monitoring control value reported by the Intel(R) Xeon Phi(TM) chip
Tcontrol Fan thermal control value reported by the Intel(R) Xeon Phi(TM) chip
Table 6-25. Table of Sensors
Sensor Type Sensor Description
Table 6-26. Status Sensor Report Format
Bits Name Description
31:7 Reserved • Reserved
6 P2E_RST • PCI Express* reset asserted.
• Fans boosted.
5 P12V_UVOV • P12V under-voltage/over-voltage signal asserted.
• Fans boosted and VR output disabled.
4 VR2_HOT • VR2 Hot signal asserted. Fans boosted and PROCHOT asserted.
3 VR1_HOT • VR1 Hot signal asserted. Fans boosted and PROCHOT asserted.
2 VR2_PHSFLT • VR2 Phase Fault asserted.
• Fans boosted and VR output disabled.
• This state is latched until power-off.
1 VR1_PHSFLT • VR1 Phase Fault asserted.
• Fans boosted and VR output disabled.
• This state is latched until power-off.
0 THERMTRIP • Coprocessor thermtrip asserted.
• Fans boosted and VR output disabled.
• This state is latched until power-off.