Section 6 Memory Management Unit (MMU)
Rev. 1.00 Oct. 01, 2007 Page 140 of 1956
REJ09B0256-0100
6.1.1 Address
Spaces
Virtual Address Space:
This LSI supports a 32-bit virtual address space, and can access a 4-
Gbyte address space. The virtual address space is divided into a number of areas, as shown in
figures 6.2 and 6.3. In privileged mode, the 4-Gbyte space from the P0 area to the P4 area can be
accessed. In user mode, a 2-Gbyte space in the U0 area can be accessed. When the SQMD bit in
the MMU control register (MMUCR) is 0, a 64-Mbyte space in the store queue area can be
accessed. When the RMD bit in the on-chip memory control register (RAMCR) is 1, a 16-Mbyte
space in on-chip memory area can be accessed. Accessing areas other than the U0 area, store
queue area, and on-chip memory area in user mode will cause an address error.
When the AT bit in MMUCR is set to 1 and the MMU is enabled, the P0, P3, and U0 areas can be
mapped onto any physical address space in 1-, 4-, or 64-Kbyte, or 1-Mbyte page units. By using
an 8-bit address space identifier, the P0, P3, and U0 areas can be increased to a maximum of 256.
Mapping from the virtual address space to the 29-bit physical address space is carried out using
the TLB.
H'0000 0000
H'8000 0000
H'E000 0000
H'E400 0000
H'E500 0000
H'E600 0000
H'FFFF FFFF
H'0000 0000
H'8000 0000
H'FFFF FFFF
H'A000 0000
H'C000 0000
H'E000 0000
Area 0
Area 1
Area 2
Area 3
Area 4
Area 5
Area 6
Area 7
Physical
address space
Address error
Address error
Address error
On-chip memory area
Store queue area
User mode
Privileged mode
P1 area
Cacheable
P0 area
Cacheable
P2 area
Non-cacheable
P3 area
Cacheable
P4 area
Non-cacheable
U0 area
Cacheable
Figure 6.2 Virtual Address Space (AT in MMUCR = 0)
Summary of Contents for SH7763
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Page 122: ...Section 2 Programming Model Rev 1 00 Oct 01 2007 Page 56 of 1956 REJ09B0256 0100 ...
Page 144: ...Section 3 Instruction Set Rev 1 00 Oct 01 2007 Page 78 of 1956 REJ09B0256 0100 ...
Page 170: ...Section 4 Pipelining Rev 1 00 Oct 01 2007 Page 104 of 1956 REJ09B0256 0100 ...
Page 282: ...Section 7 Caches Rev 1 00 Oct 01 2007 Page 216 of 1956 REJ09B0256 0100 ...
Page 378: ...Section 9 Interrupt Controller INTC Rev 1 00 Oct 01 2007 Page 312 of 1956 REJ09B0256 0100 ...
Page 514: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Oct 01 2007 Page 448 of 1956 REJ09B0256 0100 ...
Page 630: ...Section 13 PCI Controller PCIC Rev 1 00 Oct 01 2007 Page 564 of 1956 REJ09B0256 0100 ...
Page 710: ...Section 16 Clock Pulse Generator CPG Rev 1 00 Oct 01 2007 Page 644 of 1956 REJ09B0256 0100 ...
Page 732: ...Section 17 Watchdog Timer and Reset WDT Rev 1 00 Oct 01 2007 Page 666 of 1956 REJ09B0256 0100 ...
Page 752: ...Section 18 Power Down Mode Rev 1 00 Oct 01 2007 Page 686 of 1956 REJ09B0256 0100 ...
Page 772: ...Section 19 Timer Unit TMU Rev 1 00 Oct 01 2007 Page 706 of 1956 REJ09B0256 0100 ...
Page 824: ...Section 21 Compare Match Timer CMT Rev 1 00 Oct 01 2007 Page 758 of 1956 REJ09B0256 0100 ...
Page 1124: ...Section 26 I 2 C Bus Interface IIC Rev 1 00 Oct 01 2007 Page 1058 of 1956 REJ09B0256 0100 ...
Page 1350: ...Section 30 SIM Card Module SIM Rev 1 00 Oct 01 2007 Page 1284 of 1956 REJ09B0256 0100 ...
Page 1484: ...Section 33 Audio Codec Interface HAC Rev 1 00 Oct 01 2007 Page 1418 of 1956 REJ09B0256 0100 ...
Page 1560: ...Section 35 USB Host Controller USBH Rev 1 00 Oct 01 2007 Page 1494 of 1956 REJ09B0256 0100 ...
Page 1720: ...Section 37 LCD Controller LCDC Rev 1 00 Oct 01 2007 Page 1654 of 1956 REJ09B0256 0100 ...
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