Invention Grant
US07702944B2 Dynamic frequency scaling sequence for multi-gigahertz microprocessors
失效
用于多千兆赫微处理器的动态频率缩放序列
- Patent Title: Dynamic frequency scaling sequence for multi-gigahertz microprocessors
- Patent Title (中): 用于多千兆赫微处理器的动态频率缩放序列
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Application No.: US12352108Application Date: 2009-01-12
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Publication No.: US07702944B2Publication Date: 2010-04-20
- Inventor: Nathan Chelstrom , Mack Wayne Riley , Michael Fan Wang , Stephen Douglas Weitzel
- Applicant: Nathan Chelstrom , Mack Wayne Riley , Michael Fan Wang , Stephen Douglas Weitzel
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Matthew B. Talpis
- Main IPC: G06F1/00
- IPC: G06F1/00 ; H03L7/00
Abstract:
The present invention provides for reducing current spikes in a circuit when changing clocking frequencies. A first frequency is applied to a clock distribution network. A final frequency is selected. The first frequency is applied to a logic element over the clock distribution network. A hold signal is applied to the logic element. The clock rate of the clock distribution network is changed from the first frequency to the final frequency. The hold signal is unapplied to the logic element.
Public/Granted literature
- US20090119552A1 Dynamic Frequency Scaling Sequence for Multi-Gigahertz Microprocessors Public/Granted day:2009-05-07
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