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Rev. 3.00 Mar. 14, 2006 Page xii of xxxviii
Section 6 Bus Controller (BSC) ........................................................................ 125
6.1
Features.............................................................................................................................. 125
6.2
Register Descriptions ......................................................................................................... 126
6.2.1
Bus Control Register 2 (BCR2) ............................................................................ 126
6.3
Bus Configuration.............................................................................................................. 127
6.4
Multi-Clock Function ........................................................................................................ 128
6.5
Internal Bus........................................................................................................................ 129
6.5.1
Access to Internal Address Space ......................................................................... 129
6.6
Write Data Buffer Function ............................................................................................... 130
6.6.1
Write Data Buffer Function for Peripheral Module............................................... 130
6.7
Bus Arbitration .................................................................................................................. 131
6.7.1
Operation .............................................................................................................. 131
6.7.2
Bus Transfer Timing............................................................................................. 131
6.8
Bus Controller Operation in Reset ..................................................................................... 132
6.9
Usage Notes ....................................................................................................................... 132
Section 7 DMA Controller (DMAC)................................................................. 133
7.1
Features.............................................................................................................................. 133
7.2
Register Descriptions ......................................................................................................... 136
7.2.1
DMA Source Address Register (DSAR) .............................................................. 137
7.2.2
DMA Destination Address Register (DDAR) ...................................................... 138
7.2.3
DMA Offset Register (DOFR).............................................................................. 139
7.2.4
DMA Transfer Count Register (DTCR) ............................................................... 140
7.2.5
DMA Block Size Register (DBSR) ...................................................................... 141
7.2.6
DMA Mode Control Register (DMDR)................................................................ 142
7.2.7
DMA Address Control Register (DACR)............................................................. 151
7.2.8
DMA Module Request Select Register (DMRSR) ............................................... 157
7.3
Transfer Modes .................................................................................................................. 157
7.4
Operations.......................................................................................................................... 158
7.4.1
Address Modes ..................................................................................................... 158
7.4.2
Transfer Modes ..................................................................................................... 162
7.4.3
Activation Sources................................................................................................ 166
7.4.4
Bus Access Modes ................................................................................................ 168
7.4.5
Extended Repeat Area Function ........................................................................... 170
7.4.6
Address Update Function using Offset ................................................................. 172
7.4.7
Register during DMA Transfer............................................................................. 176
7.4.8
Priority of Channels .............................................................................................. 181
7.4.9
DMA Basic Bus Cycle.......................................................................................... 182
7.4.10
Bus Cycles in Dual Address Mode ....................................................................... 183
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