SH7149 datasheet(13/1022 Pages) RENESAS

13 / 1022 page

Rev. 3.00 May 17, 2007 Page xiii of xliv

8.2.9

DTC Vector Base Register (DTCVBR)................................................................ 167

8.2.10 Bus Function Extending Register (BSCEHR) ...................................................... 167

8.3

Activation Sources ............................................................................................................. 168

8.4

Location of Transfer Information and DTC Vector Table ................................................. 168

8.5

Operation ........................................................................................................................... 172

8.5.1

Transfer Information Read Skip Function ............................................................ 177

8.5.2

Transfer Information Writeback Skip Function .................................................... 178

8.5.3

Normal Transfer Mode ......................................................................................... 178

8.5.4

Repeat Transfer Mode........................................................................................... 179

8.5.5

Block Transfer Mode ............................................................................................ 181

8.5.6

Chain Transfer ...................................................................................................... 182

8.5.7

Operation Timing.................................................................................................. 184

8.5.8

Number of DTC Execution Cycles ....................................................................... 187

8.5.9

DTC Bus Release Timing ..................................................................................... 189

8.5.10 DTC Activation Priority Order ............................................................................. 192

8.6

DTC Activation by Interrupt.............................................................................................. 193

8.7

Examples of Use of the DTC ............................................................................................. 194

8.7.1

Normal Transfer Mode ......................................................................................... 194

8.7.2

Chain Transfer when Counter = 0......................................................................... 194

8.8

Interrupt Sources................................................................................................................ 196

8.9

Usage Notes ....................................................................................................................... 196

8.9.1

Module Standby Mode Setting ............................................................................. 196

8.9.2

On-Chip RAM ...................................................................................................... 196

8.9.3

DTCE Bit Setting.................................................................................................. 196

8.9.4

Chain Transfer ...................................................................................................... 196

8.9.5

Transfer Information Start Address, Source Address,

and Destination Address ....................................................................................... 197

8.9.6

Access to DTC Registers through DTC ................................................................ 197

8.9.7

Notes on IRQ Interrupt as DTC Activation Source .............................................. 197

8.9.8

Notes on SCI as DTC Activation Sources ............................................................ 197

8.9.9

Clearing Interrupt Source Flag.............................................................................. 197

8.9.10 Conflict between NMI Interrupt and DTC Activation .......................................... 197

8.9.11 Operation When a DTC Activation Request is Cancelled While in Progress....... 198

Section 9 Bus State Controller (BSC)................................................................199

9.1

Features.............................................................................................................................. 199

9.2

Input/Output Pins ...............................................................................................................201

9.3

Area Overview ...................................................................................................................201

9.3.1

Area Division........................................................................................................ 201

9.3.2

Address Map ......................................................................................................... 201

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