HD64F2357VF13 Datasheet, PDF (199/1049 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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
0
DMA request 0
Symbol
DREQ0
DMA transfer acknowledge 0 DACK0
DMA transfer end 0
1
DMA request 1
TEND0
DREQ1
DMA transfer acknowledge 1 DACK1
DMA transfer end 1
TEND1
I/O
Input
Output
Output
Input
Output
Output
Function
DMAC channel 0 external
request
DMAC channel 0 single address
transfer acknowledge
DMAC channel 0 transfer end
DMAC channel 1 external
request
DMAC channel 1 single address
transfer acknowledge
DMAC channel 1 transfer end
Rev.6.00 Oct.28.2004 page 169 of 1016
REJ09B0138-0600H