參數(shù)資料
型號: 25759
英文描述: Revision Guide for AMD Athlon 64? and AMD Opteron? Processors
中文描述: 修訂指南的AMD Athlon 64?和AMD Opteron?處理器
文件頁數(shù): 30/49頁
文件大小: 287K
代理商: 25759
30
Product Errata
25759
Rev. 3.09
September 2003
Revision Guide for AMD Athlon 64 and AMD Opteron Processors
79 Power Management Limitations Above 1.50V
Description
Processor versions with a core voltage greater than 1.50V do not support Northbridge low power
mode while in the S1 power state or LDTSTOP_L initiated HyperTransport link width/frequency
changes.
Potential Effect on System
Unpredictable system failures may occur.
Suggested Workaround
For affected versions of the processor, do not enable Northbridge low power mode in the S1 power
state. Specifically, clear the NBLowPwrEn bit in SMAF code 011 of the Power Mangement Control
Registers (i.e., clear Dev:3x80[25]).
Also, use warm reset (rather than LDTSTOP_L) to initiate HyperTransport link width/frequency
changes.
Fix Planned
Yes
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