Advertisement
8.2
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 8-4. Short address mode or full address mode can be selected for channels 1
and 0 independently by means of bits FAE1 and FAE0.
Table 8-4
Short Address Mode and Full Address Mode (For 1 Channel: Example of
Channel 0)
FAE0
Description
0
Short address mode specified (channels A and B operate independently)
1
Full address mode specified (channels A and B operate in combination)
MAR0A
IOAR0A
ETCR0A
DMACR0A
MAR0B
IOAR0B
ETCR0B
DMACR0B
MAR0A
MAR0B
IOAR0A
IOAR0B
ETCR0A
ETCR0B
DMACR0A
DMACR0B
Specifies transfer source/transfer destination address
Specifies transfer destination/transfer source address
Specifies number of transfers
Specifies transfer size, mode, activation source, etc.
Specifies transfer source/transfer destination address
Specifies transfer destination/transfer source address
Specifies number of transfers
Specifies transfer size, mode, activation source, etc.
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.
213
Advertisement
