4.1.2. Memory type mapping

In ARMv7, the memory attributes are different from those in ARMv5. Table 4.1 shows the memory type mapping between ARMv7 and ARMv5.

Table 4.1. Memory type mapping between ARMv7 and ARMv5

ARMv7 attributesARMv5 attributes
Strongly-orderedNon-cacheable, Non-bufferable (NCNB)
DeviceNon-cacheable, Bufferable (NCB)
Non-shareable Normal, Write-Through CacheableWrite-Through Cacheable, Bufferable
Non-shareable Normal, Write-Back CacheableWrite-Back Cacheable, Bufferable

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