Section 7 Memory Management Unit (MMU)
Rev.1.00 Dec. 13, 2005 Page 194 of 1286
REJ09B0158-0100
7.7.6
Notes on Using 32-Bit Address Extended Mode
When using 32-bit address extended mode, note that the items described in this section are
extended or changed as follows.
PASCR: The SE bit is added in bit 31 in the control register (PASCR). The bits 6 to 0 of the UB
in the PASCR are invalid (Note that the bit 7 of the UB is still valid). When writing to the P1 or
P2 area, the UB bit in the PMB controls whether a buffered write is performed or not. When the
MMU is enabled, the UB bit in the TLB controls writing to the P0, P3, or U0 area. When the
MMU is disabled, writing to the P0, P3, or U0 area is always performed as a buffered write.
Bit Bit
Name
Initial
Value R/W Description
31
SE
0
R/W
0: 29-bit address mode
1: 32-bit address extended mode
30 to 8
All
0
R
Reserved
For details on reading from or writing to these bits,
see description in General Precautions on Handling
of Product.
7 to 0
UB
All 0
R/W
Buffered Write Control for Each Area (64 Mbytes)
When writing is performed without using the cache or
in the cache write-through mode, these bits specify
whether the CPU waits for the end of writing for each
area.
0: The CPU does not wait for the end of writing
1: The CPU stalls and waits for the end of writing
UB[7]: Corresponding to the control register area
UB[6:0]: These bits are invalid in 32-bit address
extended mode.
Summary of Contents for SH7780 Series
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Page 82: ...Section 1 Overview Rev 1 00 Dec 13 2005 Page 32 of 1286 REJ09B0158 0100 ...
Page 122: ...Section 3 Instruction Set Rev 1 00 Dec 13 2005 Page 72 of 1286 REJ09B0158 0100 ...
Page 146: ...Section 4 Pipelining Rev 1 00 Dec 13 2005 Page 96 of 1286 REJ09B0158 0100 ...
Page 196: ...Section 6 Floating Point Unit FPU Rev 1 00 Dec 13 2005 Page 146 of 1286 REJ09B0158 0100 ...
Page 292: ...Section 9 L Memory Rev 1 00 Dec 13 2005 Page 242 of 1286 REJ09B0158 0100 ...
Page 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
Page 674: ...Section 15 Clock Pulse Generator CPG Rev 1 00 Dec 13 2005 Page 624 of 1286 REJ09B0158 0100 ...
Page 692: ...Section 16 Watchdog Timer and Reset Rev 1 00 Dec 13 2005 Page 642 of 1286 REJ09B0158 0100 ...
Page 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
Page 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Page 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
Page 1184: ...Section 29 User Break Controller UBC Rev 1 00 Dec 13 2005 Page 1134 of 1286 REJ09B0158 0100 ...
Page 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
Page 1328: ...Appendix Rev 1 00 Dec 13 2005 Page 1278 of 1286 REJ09B0158 0100 ...
Page 1336: ...Rev 1 00 Dec 13 2005 Page 1286 of 1286 REJ09B0158 0100 ...
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