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User’s Manual U14492EJ3V0UD
6.6.1
Two-cycle transfer ..................................................................................................................... 157
6.7
Transfer Object........................................................................................................................ 158
6.7.1
Transfer type and transfer object............................................................................................... 158
6.7.2
External bus cycles during DMA transfer (two-cycle transfer) ................................................... 159
6.8
DMA Channel Priorities .......................................................................................................... 159
6.9
Next Address Setting Function.............................................................................................. 159
6.10
DMA Transfer Start Factors ................................................................................................... 161
6.11
Forcible Interruption ............................................................................................................... 161
6.12
DMA Transfer End ................................................................................................................... 162
6.13
Forcible Termination............................................................................................................... 162
6.14
Precautions .............................................................................................................................. 162
6.14.1
Interrupt factors ........................................................................................................................ 163
CHAPTER 7 INTERRUPT/EXCEPTION PROCESSING FUNCTION ..................................................164
7.1
Features.................................................................................................................................... 164
7.2
Non-Maskable Interrupt .......................................................................................................... 167
7.2.1
Operation................................................................................................................................... 168
7.2.2 Restore ...................................................................................................................................... 170
7.2.3
Non-maskable interrupt status flag (NP).................................................................................... 171
7.2.4
Edge detection function ............................................................................................................. 171
7.3
Maskable Interrupts ................................................................................................................ 172
7.3.1 Operation................................................................................................................................... 172
7.3.2
Restore ...................................................................................................................................... 174
7.3.3
Priorities of maskable interrupts ................................................................................................ 175
7.3.4
Interrupt control register (xxICn) ................................................................................................ 179
7.3.5
Interrupt mask registers 0 to 3 (IMR0 to IMR3).......................................................................... 182
7.3.6
In-service priority register (ISPR)............................................................................................... 183
7.3.7
Maskable interrupt status flag (ID)............................................................................................. 184
7.3.8
Interrupt trigger mode selection ................................................................................................. 185
7.4
Software Exception ................................................................................................................. 194
7.4.1
Operation................................................................................................................................... 194
7.4.2
Restore ...................................................................................................................................... 195
7.4.3
Exception status flag (EP) ......................................................................................................... 196
7.5
Exception Trap ........................................................................................................................ 197
7.5.1
Illegal opcode definition ............................................................................................................. 197
7.5.2
Debug trap................................................................................................................................. 199
7.6
Multiple Interrupt Servicing Control...................................................................................... 201
7.7
Interrupt Response Time ........................................................................................................ 202
7.8
Periods in Which Interrupts Are Not Acknowledged........................................................... 204
CHAPTER 8 CLOCK GENERATION FUNCTION................................................................................205
8.1
Features.................................................................................................................................... 205
8.2
Configuration........................................................................................................................... 205
8.3
Input Clock Selection.............................................................................................................. 206
8.3.1
Direct mode ............................................................................................................................... 206
8.3.2
PLL mode .................................................................................................................................. 206
8.3.3
Peripheral command register (PHCMD) .................................................................................... 207
8.3.4
Clock control register (CKC) ...................................................................................................... 208
Содержание V850E/IA1 mPD703116
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