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SDMA Register Manual
Table 11-36. DMA4_CCRi
Address Offset
0x0000 0080 + (i* 0x60)
Index
i = 0 to 31
Physical Address
0x4805 6080 + (i* 0x60)
Instance
SDMA
Description
Channel Control Register
Type
RW
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
RESERVED
FS
BS
ENABLE
PREFETCH
RESERVED
RESERVED
RD_ACTIVE
WR_ACTIVE
DST_AMODE
SRC_AMODE
SUPERVISOR
READ_PRIORITY
WRITE_PRIORITY
SEL_SRC_DST_SYNC
SYNCHRO_CONTROL
BUFFERING_DISABLE
CONST_FILL_ENABLE
SUSPEND_SENSITIVE
SYNCHRO_CONTROL_UPPER
TRANSPARENT_COPY_ENABLE
Bits
Field Name
Description
Type
Reset
31:27
RESERVED
Reserved. Write 0s for future compatibility. Read returns
RW
0x00
0.
26
WRITE_PRIORITY
Channel priority on the Write side
RW
0x0
0x0: Channel has low priority on the Write side during the
arbitration process
0x1: Channel has high priority on Write sided during the
arbitration process
25
BUFFERING_DISABLE
This bit allows to disable the default buffering functionality
RW
0x-
when transfer is source synchronized.
0x0: buffering is enable across element/packet when
source is synchronized to element, packet, frame or
blocks
0x1: buffering is disabled across element/packet when
source is synchronized to element, packet, frame or
blocks
24
SEL_SRC_DST_SYNC
Specifies that element, packet, frame or block transfer
RW
0x-
(depending on CCR.bs and CCR.fs) is triggered by the
source or the destination on the DMA request
0x0: Transfer is triggered by the destination. If synch on
packet the packet element number is specified in the
CDFI register
0x1: Transfer is triggered by the source. If synchronized
on packet the packet element number is specified in the
CSFI register
23
PREFETCH
Enables the prefetch mode
RW
0x0
0x0: Prefetch mode is disabled. When
Sel_Src_Dst_Sync=1 transfers are buffered and pipelined
between DMA requests
0x1: Prefetch mode is enabled. Prefetch mode is active
only when destination is synchronized. It is SW user
responsibility not to have at the same time Prefetch=1
when Sel_Src_Dst_Sync=1. This mode is not supported
22
SUPERVISOR
Enables the supervisor mode
RW
0x0
0x0: Supervisor mode is disabled
0x1: Supervisor mode is enabled
21
RESERVED
Reserved for non-GP devices
RW
0x0
2385
SWPU177N – December 2009 – Revised November 2010
SDMA
Copyright © 2009–2010, Texas Instruments Incorporated