216
Chapter 6
DMA Functions (DMA Controller)
User’s Manual U16580EE3V1UD00
6.4.4 Forcible termination of DMA transfer
A once started DMA transfer can be forcible terminated when the corresponding DEn bit in the DMAMC
register is cleared (0). However, if the DEn bit is cleared while DMA transferring, an once started data
transfer is stopped first after it has been finished (see Figure 6-20).
Figure 6-20:
CPU and DMA Controller Processing of DMA Transfer Termination (Example)
SAR2 = 0AH
DTCR2 = 8
DMAS2 = 0
DE2 = 1
(DMA transfer channel 2
enabled)
(DMA transfer channel 2
forcibly disabled)
DMA transfer to TR0CCR3
DMA transfer to TR0CCR3
DMA transfer to TR0CCR2
DMA transfer to TR0CCR2
DMA transfer to TR0CCR1
DMA transfer to TR0CCR1
DTCR2 =7
DTCR2 = 6
DE2 = 0
CPU
processing
DMAC
processing
DMA trigger occurred
(INTTR0CD)
DMA trigger occurred
(INTTR0CD)
No further DMA trigger (INTTR0CD) will be accepted
Summary of Contents for V850E/PH2
Page 6: ...6 Preface User s Manual U16580EE3V1UD00...
Page 16: ...16 User s Manual U16580EE3V1UD00...
Page 28: ...28 User s Manual U16580EE3V1UD00...
Page 32: ...32 User s Manual U16580EE3V1UD00...
Page 84: ...84 Chapter 2 Pin Functions User s Manual U16580EE3V1UD00 MEMO...
Page 144: ...144 Chapter 3 CPU Functions User s Manual U16580EE3V1UD00 MEMO...
Page 192: ...192 Chapter 5 Memory Access Control Function PD70F3187 only User s Manual U16580EE3V1UD00 MEMO...
Page 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO...
Page 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00...
Page 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO...
Page 970: ...970 Chapter 20 Port Functions User s Manual U16580EE3V1UD00...
Page 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO...
Page 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO...
Page 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO...
Page 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO...
Page 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO...
Page 1052: ...1052 User s Manual U16580EE3V1UD00...
Page 1053: ......