
v
7.7.4
7.7.5
7.7.6
Burst ROM Interface.......................................................................................................... 197
Waits between Access Cycles............................................................................................ 200
Bus Arbitration................................................................................................................... 201
7.10.1 Master Mode......................................................................................................... 203
7.10.2 Slave Mode........................................................................................................... 205
7.10.3 Partial-Share Master Mode................................................................................... 206
7.10.4 External Bus Address Monitor.............................................................................. 209
7.10.5 Master/Slave Coordination................................................................................... 209
Other Topics....................................................................................................................... 210
7.11.1 Resets.................................................................................................................... 210
7.11.2 Access as Seen from the CPU or DMAC............................................................. 210
7.11.3 Emulator................................................................................................................ 212
Burst Access.......................................................................................................... 194
Refreshing............................................................................................................. 195
Power-On Sequence.............................................................................................. 197
7.8
7.9
7.10
7.11
Section 8
8.1
8.2
8.3
8.4
Cache
.................................................................................................................. 213
Introduction........................................................................................................................ 213
Cache Control Register (CCR).......................................................................................... 214
Address Space and the Cache............................................................................................ 216
Cache Operation ................................................................................................................ 216
8.4.1
Cache Reads.......................................................................................................... 216
8.4.2
Write Access......................................................................................................... 219
8.4.3
Cache-Through Access......................................................................................... 220
8.4.4
The TAS Instruction ............................................................................................. 221
8.4.5
Pseudo-LRU and Cache Replacement.................................................................. 222
8.4.6
Cache Initialization............................................................................................... 224
8.4.7
Associative Purges................................................................................................ 224
8.4.8
Data Array Access................................................................................................ 224
8.4.9
Address Array Access........................................................................................... 225
Cache Use.......................................................................................................................... 226
8.5.1
Initialization.......................................................................................................... 226
8.5.2
Purge of Specific Lines......................................................................................... 227
8.5.3
Cache Data Coherency.......................................................................................... 227
8.5.4
Two-Way Cache Mode......................................................................................... 228
8.5.5
Usage Notes.......................................................................................................... 229
8.5
Section 9
9.1
Direct Memory Access Controller (DMAC)
.......................................... 231
Overview............................................................................................................................ 231
9.1.1
Features................................................................................................................. 231
9.1.2
Block Diagram...................................................................................................... 233
9.1.3
Pin Configuration.................................................................................................. 234
9.1.4
Register Configuration.......................................................................................... 234