FUJITSU MB91460 SERIES FR60 User Manual
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Chapter 26 DMA Controller
2.DMA Controller (DMAC) Registers
[Bits 29, 28] MOD (MODe)*: Transfer mode setting
These bits are the transfer mode setting bits and set the operating mode of the corresponding channel.
•
When reset: Initialized to 00
B
.
•
These bits are readable and writable.
[Bits 27 to 26] WS (Word Size)*: Transfer data width selection
These bits are the transfer data width selection bits and are used to select the transfer data width of the
corresponding channel. Transfer operations are repeated in units of the data width specified in this register for
as many times as the specified count.
•
When reset: Initialized to 00
B
.
•
These bits are readable and writable.
Table 2-4 Settings for Transfer Modes
MOD
Function
00
B
Block/step transfer mode (initial value)
01
B
Burst transfer mode
10
B
Demand transfer mode
11
B
Setting disabled
Table 2-5 Selection of the Transfer Data Width
WS
Function
00
B
Byte-width transfer (initial value)
01
B
Halfword-width transfer
10
B
Word-width transfer
11
B
Setting disabled
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