208
Chapter 6
DMA Functions (DMA Controller)
User’s Manual U16580EE3V1UD00
6.4.3 DMA transfer of serial interfaces
(1)
Serial data reception with DMA transfer
The DMAC has two dedicated channels (4 and 5) to support the serial data reception. Each of
both channels can be assigned to a serial interface (CSI30, CSI31
Note
, CSIB0, CSIB1
Note
,
UARTC0, UARTC1). As DMA trigger factor, which requests and starts the DMA transfer, the corre-
sponding interrupt signal at the end of reception is pre-defined (ref. to Table 6-2).
For each DMA trigger the data will be transferred from the corresponding serial reception register
to internal RAM. Depending on the serial interface the transfer data size can be set to 8 or 16 bits
(refer to Table 6-2).
In case of 8 bits transfer data size, the destination address is incremented by 1 for each
occurrence of DMA trigger. When selecting 16 bits transfer data size the destination address must
be even, and is incremented by 2 for each DMA trigger.
When the DMA transfer count of a DMA channel terminates, the DMA transfer is stopped and a
DMA completion interrupt is generated. The maximum DMA transfer count is 256.
Note:
Not available on
μ
PD70F3447.
Table 6-2:
DMA Configuration of Serial Data Reception
Serial Interface
DMA Trigger
Factor
Transfer Data
Size
Source
Destination
CSI30
INTC30
8 bits
SIRB0L
Any iRAM address
16 bits
SIRB0
Any even iRAM address
CSI31
Note
INTC31
8 bits
SIRB1L
Any iRAM address
16 bits
SIRB1
Any even iRAM address
CSIB0
INTCB0T
8 bits
CB0RXL
Any iRAM address
16 bits
CB0RX
Any even iRAM address
CSIB1
Note
INTCB1T
8 bits
CB1RXL
Any iRAM address
16 bits
CB1RX
Any even iRAM address
UARTC0
INTUC0T
8 bits
UC0RX
Any iRAM address
16 bits
Setting prohibited
UARTC1
INTUC1T
8 bits
UC1RX
Any iRAM address
16 bits
Setting prohibited
Содержание MuPD70F3187
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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 ...
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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 ...
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