215
Chapter 6
DMA Functions (DMA Controller)
User’s Manual U16580EE3V1UD00
Figure 6-19:
Operation of DMA Channel 6/7
Note:
DMA transfer completion interrupt has the same interrupt vector address as the corresponding
transmission start interrupt specified by DTFRX register, and replaces that interrupt.
Remark:
n = 0, 1
(number of serial interface channel)
x = 6, 7
(number of DMA transfer channel)
Operation of DMA channel 6/7
DEx bit = 1 ?
DEx bit newly
written ?
DMA trigger
factor occurred ?
Transfer content from iRAM to serial
transmit buffer (spec. by DTFRx register):
SFDBn or CBnTX
(MARx)
Increment source pointer:
MARx MARx + 2
Decrement DMA transfer count register:
DTCRx DTCRx - 1
DTCRx = 0?
Set DMA transfer status bit: DMASx = 1
Generate interrupt signal (INTDMAx
Note
)
yes
no
yes
yes
no
no
yes
no
DMA transfer will be enabled by write
access to the corresponding DEn bit.
DMA trigger factor is the interrupt
source specified by DTFRx register.
DMADSCx bit = 1 ?
Transfer content from iRAM to serial
transmit buffer (spec. by DTFRx register):
SFDBnL, CBnTXL or UCnTX
(MARx)
Increment source pointer:
MARx MARx + 1
yes
(16 bit)
no
(8 bit)
←
←
←
←
←
Содержание MuPD70F3187
Страница 6: ...6 Preface User s Manual U16580EE3V1UD00 ...
Страница 16: ...16 User s Manual U16580EE3V1UD00 ...
Страница 28: ...28 User s Manual U16580EE3V1UD00 ...
Страница 32: ...32 User s Manual U16580EE3V1UD00 ...
Страница 84: ...84 Chapter 2 Pin Functions User s Manual U16580EE3V1UD00 MEMO ...
Страница 144: ...144 Chapter 3 CPU Functions User s Manual U16580EE3V1UD00 MEMO ...
Страница 192: ...192 Chapter 5 Memory Access Control Function μPD70F3187 only User s Manual U16580EE3V1UD00 MEMO ...
Страница 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO ...
Страница 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00 ...
Страница 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO ...
Страница 970: ...970 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 ...
Страница 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO ...
Страница 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO ...
Страница 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO ...
Страница 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO ...
Страница 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO ...
Страница 1052: ...1052 User s Manual U16580EE3V1UD00 ...
Страница 1053: ......