at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 308

• Manufacturer Part Number: at91sam9263
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

1x = No change
• DEST_MSIZE: Destination Burst Transaction Length
Number of data items, each of width DMAC_CTLx.DST_TR_WIDTH, to be written to the destination every time a destina-
tion burst transaction request is made from either the corresponding hardware or software handshaking interface.
• SRC_MSIZE: Source Burst Transaction Length
Number of data items, each of width DMAC_CTLx.SRC_TR_WIDTH, to be read from the source every time a source burst
transaction request is made from either the corresponding hardware or software handshaking interface.
• S_GATH_EN: Source Gather Enable Bit
0 = Gather is disabled.
1 = Gather is enabled.
Gather on the source side is only applicable when the DMAC_CTLx.SINC bit indicates an incrementing or decrementing
address control.
• D_SCAT_EN: Destination Scatter Enable Bit
0 = Scatter is disabled.
1 = Scatter is enabled.
Scatter on the destination side is only applicable when the DMAC_CTLx.DINC bit indicates an incrementing or decrement-
ing address control.
• TT_FC: Transfer Type and Flow Control
The following transfer types are supported.
• Memory to Memory
• Memory to Peripheral
• Peripheral to Memory
Flow Control can be assigned to the DMAC, the source peripheral, or the destination peripheral.
• DMS: Destination Master Select
Identifies the Master Interface layer where the destination device (peripheral or memory) resides.
00 = AHB master 1
6249D–ATARM–20-Dec-07
TT_FC
000
001
010
011
100
101
110
111
Transfer Type
Memory to Memory
Memory to Peripheral
Peripheral to Memory
Peripheral to Peripheral
Peripheral to Memory
Peripheral to Peripheral
Memory to Peripheral
Peripheral to Peripheral
Flow Controller
DMAC
DMAC
DMAC
DMAC
Peripheral
Source Peripheral
Peripheral
Destination Peripheral
AT91SAM9263 Preliminary
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