H8SXSLASH1663R datasheet(448/1504 Pages) RENESAS

448 / 1504 page

Section 10 DMA Controller (DMAC)

Rev. 2.00 Sep. 24, 2008 Page 416 of 1468

REJ09B0412-0200

Figure 10.15 shows an example of the extended repeat area operation.

External memory

When the area represented by the lower three bits of DSAR (eight bytes)

is specified as the extended repeat area (SARA4 to SARA0 = B'00011)

Repeat

An interrupt request by extended repeat area

overflow can be generated.

Area specified

by DSAR

H'23FFFE

H'23FFFF

H'240000

H'240001

H'240002

H'240003

H'240004

H'240005

H'240006

H'240007

H'240008

H'240009

H'240000

H'240001

H'240002

H'240003

H'240004

H'240005

H'240006

H'240007

Figure 10.15 Example of Extended Repeat Area Operation

When an interrupt by an extended repeat area overflow is used in block transfer mode, the

following should be taken into consideration.

When a transfer is stopped by an interrupt by an extended repeat area overflow, the address

the extended repeat area boundary. When an overflow on the extended repeat area occurs during a

transfer of one block, the interrupt by the overflow is suspended and the transfer overruns.

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