A Low Power TLB Structure for Embedded Systems

  • Authors:
  • Jin-Hyuck Choi;Jung-Hoon Lee;Seh-Woong Jeong;Shin-Dug Kim;Charles Weems

  • Affiliations:
  • -;-;-;-;-

  • Venue:
  • IEEE Computer Architecture Letters
  • Year:
  • 2002

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Abstract

We present a new two-level TLB (translationlook-aside buffer) architecture that integrates a 2-waybanked filter TLB with a 2-way banked main TLB. Theobjective is to reduce power consumption in embeddedprocessors by distributing the accesses to TLB entriesacross the banks in a balanced manner. First, an advancedfiltering technique is devised to reduce access power byadopting a sub-bank structure. Second, a bank-associativestructure is applied to each level of the TLB hierarchy.Simulation results show that the Energy*Delay productcan be reduced by about 40.9% compared to a fullyassociativeTLB, 24.9% compared to a micro-TLB with4+32 entries, and 12.18% compared to a micro-TLB with16+32 entries.