Address translation unit performing address translation from...

Electrical computers and digital processing systems: memory – Address formation – Address mapping

Reexamination Certificate

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C711S203000

Reexamination Certificate

active

07082511

ABSTRACT:
Provided is a TLB that can translate rapidly a virtual address to a physical address at small power consumption. A tag entry part (808) includes an ASID hold part (810), virtual address hold part (811), valid bit part (812), ASID comparison judgment part (102), and a virtual address comparison judgment part (104). By an ASID match line (105), a plurality of CAM cells (813) of the ASID hold part (810) are connected in parallel to each other and also connected to the ASID comparison judgment part (102). By a virtual address match line (106), a plurality of CAM cells (813) of the virtual address hold part (811) are connected in parallel to each other and also connected to the virtual address comparison judgment part (104). An ASID effective signal (107) is provided from the ASID comparison judgment part (102) to the virtual address comparison judgment part (104).

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patent: 5809522 (1998-09-01), Novak et al.
patent: 6266755 (2001-07-01), Yeager
patent: 6453387 (2002-09-01), Lozano
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patent: 2002/0133685 (2002-09-01), Kalyanasundharam
patent: 4-262436 (1992-09-01), None
patent: 7-282587 (1995-10-01), None
Masaya Sumita, “A 800MHz Single Cycle Access 32Entry Fully Associative TLB with a 240ps Access Match Circuit”, 2001 Symposioum on VLSI Circuits Digest of Technical Papers, 2001, pp. 1-2.

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