DMM_PAT_DESCR_x
NULL
0
DMM_PAT_AREA_x
DMM_PAT_CTRL_x
DMM_PAT_DATA_x
0 Y
1
X
1
0
0
0
0
0 D
¹
NULL
Y
0
X
0
0
1
0
PAT Internal Register Set
Entry 0
Entry 1
Entry 2
¼
Entry Table 0
PAT Physical Address Translation Table
Preliminary
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Use Case
2.3.3.1.4 PAT Refill Direction
The DMM_PAT_CTRL__x.DIRECTION field gives the “order” of the area refill with the same “SYX”
encoding as in the TILER orientations:
•
0: from left to right then from top to bottom
•
1: from right to left then from top to bottom
•
2: from left to right then from bottom to top
•
3: from right to left then from bottom to top
•
4: from top to bottom then from left to right
•
5: from top to bottom then from right to left
•
6: from bottom to top then from left to right
•
7: from bottom to top then from right to left
This feature allows the initiator HD_VPSS to start an access to an on going refill area. In this case, the
direction field is set in accordance with the orientation accesses made by the initiators. The
DMM_PAT_STATUS__x.ERROR is asserted to 1 if an access is done to a not yet refilled page.
2.3.3.2
Simple Manual 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
.
•
Write the DMM_PAT_AREA_i register with the relevant (x0, y0) (x1, y1) area definition
•
Write the DMM_PAT_DATA_i register with the physical address of the created entry table
•
Write the DMM_PAT_CTRL_i register with the requested refill direction and assert the
DMM_PAT_CTRL_i[0] START bit:
•
The refill is done when the DMM_PAT_STATUS_i[3] DONE bit is set.
•
A new refill can be initiated when the DMM_PAT_STATUS_i[0] READY bit is set.
Figure 2-51. DMM Simple Manual Area Refill
375
SPRUGX9 – 15 April 2011
DMM/TILER
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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