Datasheet

SAM9263 [DATASHEET]
Atmel-6249N-ATARM-SAM9263-Datasheet_14-Mar-16
302
24.4.8 Source Gather Register for Channel x
Name: DMAC_SGRx
Address: 0x00800048 [0], 0x008000A0 [1]
Access: Read/Write
The address offset for each channel is: 0x48+[x * 0x58]
For example, SGR0: 0x048, SGR1: 0x0a0, etc.
The DMAC_CTLx.SINC field controls whether the address increments or decrements. When the DMAC_CTLx.SINC field
indicates a fixed-address control, then the address remains constant throughout the transfer and the DMAC_SGRx is
ignored.
• SGI: Source Gather Interval
Source gather count field specifies the number of contiguous source transfers of DMAC_CTLx.SRC_TR_WIDTH between
successive gather intervals. This is defined as a gather boundary.
• SGC: Source Gather Count
Source gather interval field (DMAC_SGRx.SGI) – specifies the source address increment/decrement in multiples of
DMAC_CTLx.SRC_TR_WIDTH on a gather boundary when gather mode is enabled for the source transfer.
31 30 29 28 27 26 25 24
––––––––
23 22 21 20 19 18 17 16
SGC SGI
15 14 13 12 11 10 9 8
SGI
76543210
SGI