SH7785 Datasheet, PDF (12/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

7.8.1 Overview of 32-Bit Address Extended Mode..................................................... 199
7.8.2 Transition to 32-Bit Address Extended Mode .................................................... 200
7.8.3 Privileged Space Mapping Buffer (PMB) Configuration ................................... 200
7.8.4 PMB Function..................................................................................................... 202
7.8.5 Memory-Mapped PMB Configuration ............................................................... 203
7.8.6 Notes on Using 32-Bit Address Extended Mode ................................................ 204
7.9 32-Bit Boot Function ......................................................................................................... 207
7.9.1 Initial Entries to PMB......................................................................................... 207
7.9.2 Notes on 32-Bit Boot .......................................................................................... 207
7.10 Usage Notes ....................................................................................................................... 209
7.10.1 Note on Using LDTLB Instruction ..................................................................... 209
Section 8 Caches................................................................................................................... 211
8.1 Features.............................................................................................................................. 211
8.2 Register Descriptions......................................................................................................... 215
8.2.1 Cache Control Register (CCR) ........................................................................... 216
8.2.2 Queue Address Control Register 0 (QACR0)..................................................... 218
8.2.3 Queue Address Control Register 1 (QACR1)..................................................... 219
8.2.4 On-Chip Memory Control Register (RAMCR) .................................................. 220
8.3 Operand Cache Operation.................................................................................................. 222
8.3.1 Read Operation ................................................................................................... 222
8.3.2 Prefetch Operation .............................................................................................. 223
8.3.3 Write Operation .................................................................................................. 224
8.3.4 Write-Back Buffer .............................................................................................. 225
8.3.5 Write-Through Buffer......................................................................................... 225
8.3.6 OC Two-Way Mode ........................................................................................... 226
8.4 Instruction Cache Operation .............................................................................................. 227
8.4.1 Read Operation ................................................................................................... 227
8.4.2 Prefetch Operation .............................................................................................. 227
8.4.3 IC Two-Way Mode............................................................................................. 228
8.4.4 Instruction Cache Way Prediction Operation ..................................................... 228
8.5 Cache Operation Instruction .............................................................................................. 229
8.5.1 Coherency between Cache and External Memory.............................................. 229
8.5.2 Prefetch Operation .............................................................................................. 231
8.6 Memory-Mapped Cache Configuration ............................................................................. 232
8.6.1 IC Address Array................................................................................................ 232
8.6.2 IC Data Array ..................................................................................................... 234
8.6.3 OC Address Array .............................................................................................. 234
8.6.4 OC Data Array.................................................................................................... 236
8.6.5 Memory-Mapped Cache Associative Write Operation....................................... 237
Rev.1.00 Jan. 10, 2008 Page xii of xxx
REJ09B0261-0100