Renesas SH7781 用户手册
19. Display Unit (DU)
Rev.1.00 Jan. 10, 2008 Page 909 of 1658
REJ09B0261-0100
19.3.42
Plane n Wrap Around Start Position Register (PnWASPR) (n
= 1 to 6)
The plane n wrap-around start position registers (PnWASPR, n = 1 to 6) set the Y direction start
position of one wrap-around area of plane n. The value is retained during power-on reset and
manual reset.
position of one wrap-around area of plane n. The value is retained during power-on reset and
manual reset.
R/W:
Internal update:
R/W:
Internal update:
16
17
18
19
20
21
22
23
24
25
26
27
28
29
31
30
Bit:
Initial value:
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
O
O
O
O
O
O
O
O
O
O
0
0
0
0
—
—
—
—
—
—
—
—
—
—
0
0
—
—
—
—
PnWASPY
—
—
0
1
2
3
4
5
6
7
8
9
10
11
12
13
15
14
Bit:
Initial value:
Bit Bit
Name
Initial
Value R/W
Value R/W
Internal
Update Description
Update Description
31 to 14
⎯ All
0
R
⎯ Reserved
These bits are always read as 0. The write value
should always be 0.
should always be 0.
13 to 4
PnWASPY
Undefined R/W
Yes
Plane n Wrap Around Start Position Y
The Y direction start position of one wrap-
around area should be set with reference to the
address specified in PnDSA0R and PnDSA1R.
around area should be set with reference to the
address specified in PnDSA0R and PnDSA1R.
The start position can be set every 16 raster
lines.
lines.
3 to 0
⎯ All
0
R
⎯ Reserved
These bits are always read as 0. The write value
should always be 0.
should always be 0.