User’s Manual U18279EJ3V0UD
16
19.3.1
DMA source address registers 0 to 3 (DSA0 to DSA3)..............................................................961
19.3.2
DMA destination address registers 0 to 3 (DDA0 to DDA3).......................................................963
19.3.3
DMA transfer count registers 0 to 3 (DBC0 to DBC3)................................................................965
19.3.4
DMA addressing control registers 0 to 3 (DADC0 to DADC3) ...................................................966
19.3.5
DMA channel control registers 0 to 3 (DCHC0 to DCHC3)........................................................967
19.3.6
DMA trigger factor registers 0 to 3 (DTFR0 to DTFR3) .............................................................969
19.4
Transfer Modes....................................................................................................................... 973
19.4.1
Single transfer mode .................................................................................................................973
19.4.2
Single-step transfer mode..........................................................................................................975
19.4.3
Block transfer mode...................................................................................................................976
19.5
Transfer Types........................................................................................................................ 977
19.5.1
2-cycle transfer ..........................................................................................................................977
19.6
Transfer Target ....................................................................................................................... 977
19.6.1
Transfer type and transfer target ...............................................................................................977
19.7
DMA Channel Priorities ......................................................................................................... 977
19.8
Next Address Setting Function............................................................................................. 978
19.9
DMA Transfer Start Factors .................................................................................................. 979
19.10 Forcible Termination.............................................................................................................. 980
19.11 Times Related to DMA Transfer............................................................................................ 981
19.12 Cautions .................................................................................................................................. 981
19.13 DMA Transfer End .................................................................................................................. 982
CHAPTER 20 INTERRUPT/EXCEPTION PROCESSING FUNCTION............................................... 983
20.1
Features .................................................................................................................................. 983
20.2
Non-Maskable Interrupts ....................................................................................................... 988
20.2.1
Operation...................................................................................................................................989
20.2.2
Restore ......................................................................................................................................991
20.2.3
Non-maskable interrupt status flag (NP)....................................................................................992
20.3
Maskable Interrupts ............................................................................................................... 993
20.3.1
Operation...................................................................................................................................993
20.3.2
Restore ......................................................................................................................................995
20.3.3
Priorities of maskable interrupts ................................................................................................996
20.3.4
Interrupt control registers (xxICn) ............................................................................................1000
20.3.5
Interrupt mask registers 0 to 5 (IMR0 to IMR5)........................................................................1005
20.3.6
In-service priority register (ISPR).............................................................................................1008
20.3.7
Maskable interrupt status flag (ID) ...........................................................................................1009
20.4
External Interrupt Request Input Pins (INTP00 to INTP18, INTADT0, INTADT1) ........... 1010
20.4.1
Noise elimination .....................................................................................................................1010
20.4.2
Edge detection.........................................................................................................................1010
20.5
Software Exception .............................................................................................................. 1015
20.5.1
Operation.................................................................................................................................1015
20.5.2
Restore ....................................................................................................................................1016
20.5.3
Exception status flag (EP) .......................................................................................................1017
20.6
Exception Trap ..................................................................................................................... 1017
20.6.1
Illegal opcode definition ...........................................................................................................1017
20.6.2
Debug trap...............................................................................................................................1019
20.7
Multiple Interrupt Servicing Control................................................................................... 1021
20.8
Interrupt Response Time of CPU........................................................................................ 1023