
Rev. 4.00, 03/04, page xxv of xlvi
8.5.3
8.5.4
8.5.5
8.5.6
8.5.7
8.5.8
8.5.9
Basic Interface ..................................................................................................... 200
Synchronous DRAM Interface............................................................................. 205
Burst ROM Interface............................................................................................ 227
PCMCIA Interface............................................................................................... 229
Waits between Access Cycles.............................................................................. 239
Bus Arbitration..................................................................................................... 240
Bus Pull-Up.......................................................................................................... 240
Section 9 Direct Memory Access Controller (DMAC) .................................... 243
9.1
Feature............................................................................................................................... 243
9.2
Input/Output Pin................................................................................................................ 245
9.3
Register Description.......................................................................................................... 245
9.3.1
DMA Source Address Registers 0 to 3 (SAR_0 to SAR_3)................................ 246
9.3.2
DMA Destination Address Registers 0 to 3 (DAR_0 to DAR_3)........................ 246
9.3.3
DMA Transfer Count Registers 0 to 3 (DMATCR_0 to DMATCR_3)............... 247
9.3.4
DMA Channel Control Registers 0 to 3 (CHCR_0 to CHCR_3)......................... 247
9.3.5
DMA Operation Register (DMAOR)................................................................... 253
9.4
Operation........................................................................................................................... 255
9.4.1
DMA Transfer Flow............................................................................................. 255
9.4.2
DMA Transfer Requests ...................................................................................... 257
9.4.3
Channel Priority................................................................................................... 259
9.4.4
DMA Transfer Types........................................................................................... 262
9.4.5
Number of Bus Cycle States and
DREQ
Pin Sampling Timing .......................... 274
9.4.6
Source Address Reload Function......................................................................... 278
9.4.7
DMA Transfer Ending Conditions....................................................................... 280
9.5
Compare Match Timer (CMT).......................................................................................... 282
9.5.1
Feature ................................................................................................................. 282
9.5.2
Register Description............................................................................................. 283
9.5.3
Operation ............................................................................................................. 285
9.6
Examples of Use ............................................................................................................... 287
9.6.1
Example of DMA Transfer between A/D Converter and External Memory
(Address Reload on) ............................................................................................ 287
9.6.2
Example of DMA Transfer between External Memory and SCIF Transmitter
(Indirect Address on) ........................................................................................... 288
9.7
Cautions ............................................................................................................................ 290
Section 10 Clock Pulse Generator (CPG)......................................................... 291
10.1
Feature............................................................................................................................... 291
10.2
Input/Output Pin................................................................................................................ 294
10.3
Clock Operating Modes.................................................................................................... 294
10.4
Register Description.......................................................................................................... 298
10.4.1 Frequency Control Register (FRQCR)................................................................. 298
10.5
Operation........................................................................................................................... 300