參數(shù)資料
型號(hào): μPD30181
廠商: NEC Corp.
英文描述: 64-Bit RISC Microprosessor(64位RISC微處理器)
中文描述: 64位RISC Microprosessor(64位的RISC微處理器)
文件頁(yè)數(shù): 27/68頁(yè)
文件大小: 270K
代理商: ΜPD30181
27
μ
PD30700,30700L,30710
Figure 2-11. Details of xkphys Area
2.5.2 Address translation
Virtual addresses are translated into physical addresses by the internal TLB (Translation Lookaside Buffer) in page
units. The TLB is of full-associative configuration and has 64 entries at the virtual address side and 32 entries at the
physical address side. The page size can be changed from 4K bytes to 16M bytes.
If a hit of a TLB entry does not occur, a TLB non-coincidence exception occurs in the 32-bit mode and an XTLB
non-coincidence exception occurs in the 64-bit mode. If this happens, replace the contents of the TLB by software.
Figure 2-12 outlines address translation.
Address error
4G bytes
w/o TLB mapping
Cacheable
Address error
4G bytes
w/o TLB mapping
Cacheable
Address error
4G bytes
w/o TLB mapping
Cacheable
Address error
4G bytes
w/o TLB mapping
Cacheable
Address error
4G bytes
w/o TLB mapping
Cacheable
Address error
4 G bytes
w/o TLB mapping
Non-cacheable
Address error
4G bytes
w/o TLB mapping
Cacheable
Address error
4G bytes
w/o TLB mapping
Cacheable
0xBFFF FFFF FFFF FFFF
0xB800 0001 0000 0000
0xB800 0000 FFFF FFFF
0xB800 0000 0000 0000
0xB7FF FFFF FFFF FFFF
0xB000 0001 0000 0000
0xB000 0000 FFFF FFFF
0xB000 0000 0000 0000
0xAFFF FFFF FFFF FFFF
0xA800 0001 0000 0000
0xA800 0000 FFFF FFFF
0xA800 0000 0000 0000
0xA7FF FFFF FFFF FFFF
0xA000 0001 0000 0000
0xA000 0000 FFFF FFFF
0xA000 0000 0000 0000
0x9FFF FFFF FFFF FFFF
0x9800 0001 0000 0000
0x9800 0000 FFFF FFFF
0x9800 0000 0000 0000
0x97FF FFFF FFFF FFFF
0x9000 0001 0000 0000
0x9000 0000 FFFF FFFF
0x9000 0000 0000 0000
0x8FFF FFFF FFFF FFFF
0x8800 0001 0000 0000
0x8800 0000 FFFF FFFF
0x8800 0000 0000 0000
0x87FF FFFF FFFF FFFF
0x8000 0001 0000 0000
0x8000 0000 FFFF FFFF
0x8000 0000 0000 0000
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