mc68ec040v Freescale Semiconductor, Inc, mc68ec040v Datasheet - Page 75

• Manufacturer Part Number: mc68ec040v
• Description: M68040 User Manual
• Manufacturer: Freescale Semiconductor, Inc

3.3 ADDRESS TRANSLATION CACHES
The ATCs in the MMUs are four-way set-associative caches that each store 64 logical-to-
physical address translations and associated page information similar in form to the
corresponding page descriptors in memory. The purpose of the ATC is to provide a fast
mechanism for address translation by avoiding the overhead associated with a table
search of the logical-to-physical mapping of recently used logical addresses. Figure 3-20
illustrates the organization of the ATC.
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Figure 3-20. ATC Organization
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