Invention Grant
- Patent Title: Data cache way prediction
- Patent Title (中): 数据缓存方式预测
-
Application No.: US12194936Application Date: 2008-08-20
-
Publication No.: US08392651B2Publication Date: 2013-03-05
- Inventor: Ajit Karthik Mylavarapu
- Applicant: Ajit Karthik Mylavarapu
- Applicant Address: US CA Sunnyvale
- Assignee: MIPS Technologies, Inc.
- Current Assignee: MIPS Technologies, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Kilpatrick Townsend & Stockton LLP
- Agent Ardeshir Tabibi
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F13/00 ; G06F13/28

Abstract:
A microprocessor includes one or more N-way caches and a way prediction logic that selectively enables and disables the cache ways so as to reduce the power consumption. The way prediction logic receives an address and predicts in which one of the cache ways the data associated with the address is likely to be stored. The way prediction logic causes an enabling signal to be supplied only to the way predicted to contain the requested data. The remaining (N−1) of the cache ways do not receive the enabling signal. The power consumed by the cache is thus significantly reduced.
Public/Granted literature
- US20100049912A1 DATA CACHE WAY PREDICTION Public/Granted day:2010-02-25
Information query