Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Data Sheet
Product codes
AT32UC3A3-XPLD
354
32072H–AVR32–10/2012
AT32UC3A3
• DMS: Destination Master Select
Identifies the Master Interface layer where the destination device (peripheral or memory) resides
• TT_FC: Transfer Type and Flow Control
The four following transfer types are supported:
• Memory to Memory, Memory to Peripheral, Peripheral to Memory and Peripheral to Peripheral.
The DMACA is always the Flow Controller.
• DST_SCATTER_EN: Destination Scatter Enable
0 = Scatter disabled
1 = Scatter enabled
Scatter on the destination side is applicable only when the CTLx.DINC bit indicates an incrementing or decrementing
address control.
address control.
• SRC_GATHER_EN: Source Gather Enable
0 = Gather disabled
1 = Gather enabled
Gather on the source side is applicable only when the CTLx.SINC bit indicates an incrementing or decrementing address
control.
control.
• SRC_MSIZE: Source Burst Transaction Length
Number of data items, each of width CTLx.SRC_TR_WIDTH, to be read from the source every time a source burst transac-
tion request is made from either the corresponding hardware or software handshaking interface.
tion request is made from either the corresponding hardware or software handshaking interface.
Table 19-5.
Destination Master Select
DMS
HSB Master
0
HSB master 1
1
HSB master 2
Other
Reserved
TT_FC
Transfer Type
Flow Controller
000
Memory to Memory
DMACA
001
Memory to Peripheral
DMACA
010
Peripheral to Memory
DMACA
011
Peripheral to Peripheral
DMACA
Other
Reserved
Reserved
SRC_MSIZE
Size (items number)
0
1
1
4
2
8