Specifications

Product Errata 119

Revision Guide for AMD Family 10h Processors

41322 Rev. 3.84 August 2011

405 HyperTransport™ Link May Fail to Complete Training

Description

HyperTransport™ links may fail to re-train when resuming from LS2 low-power mode or following a

warm reset. The failure may be package-specific and sensitive to longer HyperTransport links that

contain multiple connectors.

Potential Effect on System

System hang.

Suggested Workaround

On G34r1 and C32r1 processors, system software should program the Link Global Extended

For Fr5 (1207) and Fr6 (1207) processors, system developers that observe the erratum conditions

following warm reset should program the Link Global Extended Register[RXCalEn] (F0x16C[9]) to

1b.

For all other processors, system software may program the Link Global Extended Register[RXCalEn]

(F0x16C[9]) to 1b. This workaround is not necessary if erratum #351 applies to the processor

revision.

Fix Planned