Datasheet

295
SAM9263 [DATASHEET]
Atmel-6249N-ATARM-SAM9263-Datasheet_14-Mar-16
• 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
01: Reserved
10: Reserved
11: Reserved
TT_FC Transfer Type Flow Controller
000 Memory to Memory DMAC
001 Memory to Peripheral DMAC
010 Peripheral to Memory DMAC
011 Peripheral to Peripheral DMAC
100 Peripheral to Memory Peripheral
101 Peripheral to Peripheral Source Peripheral
110 Memory to Peripheral Peripheral
111 Peripheral to Peripheral Destination Peripheral