H8S2245 datasheet(33/818 Pages) RENESAS

33 / 818 page

Rev.3.00 Mar. 26, 2007 Page xxxiii of xlii

REJ09B0355-0300

6.8.5

Usage Note........................................................................................................... 175

6.9

Bus Arbitration.................................................................................................................. 175

6.9.1

Overview.............................................................................................................. 175

6.9.2

Operation ............................................................................................................. 175

6.9.3

Bus Transfer Timing ............................................................................................ 176

6.9.4

External Bus Release Usage Note........................................................................ 176

6.10

Resets and the Bus Controller ........................................................................................... 176

Section 7 Data Transfer Controller................................................................................. 177

7.1

Overview........................................................................................................................... 177

7.1.1

Features ................................................................................................................ 177

7.1.2

Block Diagram ..................................................................................................... 178

7.1.3

7.2

Register Descriptions ........................................................................................................ 180

7.2.1

DTC Mode Register A (MRA) ............................................................................ 180

7.2.2

DTC Mode Register B (MRB)............................................................................. 182

7.2.3

DTC Source Address Register (SAR).................................................................. 183

7.2.4

DTC Destination Address Register (DAR) .......................................................... 183

7.2.5

DTC Transfer Count Register A (CRA) .............................................................. 184

7.2.6

DTC Transfer Count Register B (CRB)............................................................... 184

7.2.7

DTC Enable Registers (DTCER) ......................................................................... 185

7.2.8

DTC Vector Register (DTVECR) ........................................................................ 186

7.2.9

Module Stop Control Register (MSTPCR) .......................................................... 187

7.3

Operation........................................................................................................................... 187

7.3.1

Overview.............................................................................................................. 187

7.3.2

Activation Sources ............................................................................................... 189

7.3.3

DTC Vector Table................................................................................................ 191

7.3.4

Location of Register Information in Address Space ............................................ 194

7.3.5

Normal Mode ....................................................................................................... 195

7.3.6

Repeat Mode ........................................................................................................ 196

7.3.7

Block Transfer Mode ........................................................................................... 197

7.3.8

Chain Transfer ..................................................................................................... 199

7.3.9

Operation Timing................................................................................................. 200

7.3.10 Number of DTC Execution States........................................................................ 201

7.3.11 Procedures for Using DTC................................................................................... 203

7.3.12 Examples of Use of the DTC ............................................................................... 204

7.4

Interrupts ........................................................................................................................... 206

7.5

Usage Notes ...................................................................................................................... 206

Section 8 I/O Ports .............................................................................................................. 207

8.1

Overview........................................................................................................................... 207

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