D12320VF25IV Datasheet, PDF (255/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 7 DMA Controller (Not Supported in the H8S/2321)
7.2 Register Descriptions (1) (Short Address Mode)
Short address mode transfer can be performed for channels A and B independently.
Short address mode transfer is specified for each channel by clearing the FAE bit in DMABCR to
0, as shown in table 7.4. Short address mode or full address mode can be selected for channels 1
and 0 independently by means of bits FAE1 and FAE0.
Table 7.4 Short Address Mode and Full Address Mode (For 1 Channel: Example of
Channel 0)
FAE0
0
Description
Short address mode specified (channels A and B operate independently)
MAR0A
IOAR0A
ETCR0A
DMACR0A
Specifies transfer source/transfer destination address
Specifies transfer destination/transfer source address
Specifies number of transfers
Specifies transfer size, mode, activation source, etc.
MAR0B
IOAR0B
ETCR0B
DMACR0B
Specifies transfer source/transfer destination address
Specifies transfer destination/transfer source address
Specifies number of transfers
Specifies transfer size, mode, activation source, etc.
1
Full address mode specified (channels A and B operate in combination)
MAR0A
MAR0B
IOAR0A
IOAR0B
ETCR0A
ETCR0B
DMACR0A DMACR0B
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.
Rev.6.00 Sep. 27, 2007 Page 223 of 1268
REJ09B0220-0600