Renesas SH7781 User Manual
Page 937
19. Display Unit (DU)
Rev.1.00 Jan. 10, 2008 Page 907 of 1658
REJ09B0261-0100
19.3.40
Plane n Start Position X Register (PnSPXR) (n
= 1 to 6)
The plane n start position X registers (PnSPXR, n = 1 to 6) set the horizontal start position of
plane n in memory. 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/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
O
O
O
O
O
O
O
O
O
O
O
O
—
—
—
—
—
—
—
—
—
—
—
—
0
0
0
0
PnSPX
—
—
—
—
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
Internal
Update Description
31 to 12
⎯ All
0
R
⎯ Reserved
These bits are always read as 0. The write value
should always be 0.
11 to 0
PnSPX
Undefined R/W
Yes
Plane n Start Position X
The horizontal start position of plane n in
memory should be set in dot units.
Notes: 1. When YC is set by the PnDDF bit in
PnMR, an even value should be set.
2. Setting of values exceeding twice the
value of the plane n memory width X
register (PnMWX) is prohibited.