r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 342

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 7 DMA Controller (DMAC)
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The functions of MAR, IOAR, ETCR, DMACR, and DMABCR differ according to the transfer
mode (short address mode or full address mode). The transfer mode can be selected by means of
the FAE1 and FAE0 bits in DMABCRH. The register configurations for short address mode and
full address mode of channel 0 are shown in table 7.2.
Table 7.2
Rev. 1.00 Sep. 19, 2008 Page 312 of 1342
REJ09B0467-0100
FAE0
0
1
DMA control register_1A (DMACR_1A)
DMA control register_1B (DMACR_1B)
DMA band control register H (DMABCRH)
DMA band control register L (DMABCRL)
DMA write enable register (DMAWER)
DMA terminal control register (DMATCR)
Description
Short address mode specified (channels 0A and 0B operate independently)
Full address mode specified (channels 0A and 0B operate in combination as channel 0)
Short Address Mode and Full Address Mode (Channel 0)
MAR_0AH
MAR_0BH
MAR_0AH
MAR_0BH
DMACR_0A
ETCR_0A
ETCR_0B
ETCR_0A
ETCR_0B
IOAR_0A
IOAR_0B
IOAR_0A
IOAR_0B
MAR_0AL
MAR_0BL
DMACR_0A
DMACR_0B
MAR_0AL
MAR_0BL
DMACR_0B
Specifies transfer source/transfer destination address
Specifies transfer destination/transfer source address
Specifies number of transfers
Specifies transfer size, mode, activation source.
Specifies transfer source/transfer destination address
Specifies transfer destination/transfer source address
Specifies number of transfers
Specifies transfer size, mode, activation source.
Specifies transfer source address
Specifies transfer destination address
Not used
Not used
Specifies number of transfers
Specifies number of transfers (used in block transfer
mode only)
Specifies transfer size, mode, activation source, etc.