AMD HD8650WCGHBOX Datasheet download pdf (Page 47)

Product Errata 47

Revision Guide for AMD Family 10h Processors

41322 Rev. 3.16 February 2008

319 Inaccurate Temperature Measurement

Description

The internal thermal sensor used for CurTmp (F3xA4[31:21]), hardware thermal control (HTC),

software thermal control (STC), and the sideband temperature sensor interface (SB-TSI) may report

inconsistent values.

Potential Effect on System

HTC, STC and SB-TSI do not provide reliable thermal protection. This does not affect THERMTRIP.

Suggested Workaround

None. Systems should be designed with conventional thermal control and throttling methods or

utilize PROCHOT_L functionality based on temperature measurements from an analog thermal diode

(THERMDA/THERMDC).

Systems should not rely on the HTC features, STC features or use SB-TSI.

Software should not modify HtcTmpLmt (F3x64[22:16]) or enable any of the STC features by setting

StcPstateEn, StcApcTmpLoEn, StcApcTmpHiEn, StcSbcTmpLoEn, or StcSpcTmpHiEn

(F3x68[5,3:0]).

Fix Planned

Yes

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AMD HD8650WCGHBOX Datasheet Page 47