Section 9 L Memory
Rev.1.00 Dec. 13, 2005 Page 241 of 1286
REJ09B0158-0100
9.5 Usage
Notes
9.5.1 Page
Conflict
In the event of simultaneous access to the same page from different buses, page conflict occurs.
Although each access is completed correctly, this kind of conflict tends to lower L memory
accessibility. Therefore it is advisable to provide all possible preventative software measures. For
example, conflicts will not occur if each bus accesses different pages.
9.5.2
L Memory Coherency
In order to allocate instructions in the L memory, write an instruction to the L memory, execute
the following sequence, then branch to the rewritten instruction.
•
SYNCO
•
ICBI @Rn
In this case, the target for the ICBI instruction can be any address (L memory address may be
possible) within the range where no address error exception occurs, and cache hit/miss is possible.
9.5.3 Sleep
Mode
The SuperHyway bus master module, such as DMAC, cannot access L memory in sleep mode.
9.6
Note on Using 32-Bit Address Extended Mode
In 32-bit address extended mode, L0SADR fields in LSA0, L1SADR fields in LSA1, L0DADR
fields in LDA0, and L1DADR fields in LDA1 are extended from 19-bit [28:10] to 22-bit [31:10].
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 ...
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