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HD6432351 датащи(PDF) 233 Page - Renesas Technology Corp

номер детали HD6432351
подробное описание детали  16-Bit Single-Chip Microcomputer
PDF  1025 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD6432351 датащи(HTML) 233 Page - Renesas Technology Corp

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Section 7 DMA Controller (DMAC)
Rev. 3.00 Sep 15, 2006 page 199 of 988
REJ09B0330-0300
7.1.4
Pin Configuration
Table 7.2 summarizes the DMAC pins.
In short address mode, external request transfer, single address transfer, and transfer end output
are not performed for channel A.
The DMA transfer acknowledge function is used in channel B single address mode in short
address mode.
When the
DREQ pin is used, do not designate the corresponding port for output.
With regard to the
DACK pins, setting single address transfer automatically sets the corresponding
port to output, functioning as a
DACK pin.
With regard to the
TEND pins, whether or not the corresponding port is used as a TEND pin can
be specified by means of a register setting.
Table 7.2
DMAC Pins
Channel
Pin Name
Symbol
I/O
Function
0
DMA request 0
DREQ0
Input
DMAC channel 0 external
request
DMA transfer acknowledge 0
DACK0
Output
DMAC channel 0 single
address transfer acknowledge
DMA transfer end 0
TEND0
Output
DMAC channel 0 transfer end
1
DMA request 1
DREQ1
Input
DMAC channel 1 external
request
DMA transfer acknowledge 1
DACK1
Output
DMAC channel 1 single
address transfer acknowledge
DMA transfer end 1
TEND1
Output
DMAC channel 1 transfer end



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