MC68040RC40A Freescale Semiconductor, MC68040RC40A Datasheet - Page 75

• Manufacturer Part Number: MC68040RC40A
• Description: IC MICROPROCESSOR 32BIT 179-PGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68040RC40A

• Processor Type: M680x0 32-Bit
• Speed: 40MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 179-PGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

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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Freescale Semiconductor, Inc.
For More Information On This Product,
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Figure 3-20. ATC Organization
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M68040 USER'S MANUAL
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