nest:
0
area:
ctrl:
data:
0 Y
1
X
1
0
0
0
0
0 D
¹
NULL
Y
0
X
0
0
1
0
Memory-mapped descriptor 0
Entry 0
Entry 1
Entry 2
¼
Entry Table 0
PAT Physical Address Translation Table
X
DMM_PAT_DESCR_x
0
DMM_PAT_AREA_x
DMM_PAT_CTRL_x
DMM_PAT_DATA_x
0
0
X
0
X 0
X
¹
NULL
0
X
0
PAT Internal Register Set
X
X
X
X
NULL
area
0
Preliminary
Use Case
www.ti.com
2.3.3.3
Single Auto-Configured Area Refill
These steps have to be performed to create the 16-byte aligned memory-mapped entry table containing
all entries of the defined area, as seen in
.
1. Create a 16-byte aligned memory-mapped descriptor structure where:
(a) the next field is set to NULL
(b) the area field is set with the relevant (x0, y0) (x1, y1) area definition
(c) the ctrl field is set with the requested direction D and the start bit asserted to start refilling as soon
as this descriptor enters the PAT refill engine
(d) the data field is set to the physical address of the created entry table
2. The DMM_PAT_DESCR_i register with the physical address of the created descriptor.
3. The refill is done when the DMM_PAT_STATUS_i[3] DONE bit is set.
4. A new refill can be initiated when the DMM_PAT_STATUS_i[0] READY bit is set.
Figure 2-52. DMM Single Auto-configured Area Refill
376
DMM/TILER
SPRUGX9 – 15 April 2011
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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