r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 938

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

19. Display Unit (DU)
19.3.41 Plane n Start Position Y Register (PnSPYR) (n = 1 to 6)
The plane n start position Y registers (PnSPYR, n = 1 to 6) set the vertical start position of plane n
in memory. The value is retained during power-on reset and manual reset.
Internal update:
Internal update:
Rev.1.00 Jan. 10, 2008 Page 908 of 1658
REJ09B0261-0100
Bit
31 to 16 ⎯
15 to 0
Initial value:
Initial value:
R/W:
R/W:
Bit:
Bit:
Bit Name
PnSPY
R/W
31
15
—
—
O
R
0
R/W
30
—
14
—
R
O
0
Initial
Value
All 0
Undefined R/W
R/W
29
13
—
—
R
O
0
R/W
28
12
—
—
R
O
0
R/W
R
R/W
27
11
—
—
O
R
0
Internal
Update
⎯
Yes
R/W
26
10
—
—
O
R
0
R/W
25
—
—
R
O
0
9
Description
Reserved
These bits are always read as 0. The write value
should always be 0.
Plane n Start Position Y
The vertical start position of plane n in memory
should be set in raster line units.
Note: Setting a value exceeding {twice the plane
R/W
24
—
—
R
O
0
8
PnSPY
n wrap-around start position Y
(PnWASPY) + twice the plane n wrap-
around memory width Y (PnWAMWY)} is
prohibited.
R/W
23
—
—
R
O
0
7
R/W
22
—
—
O
R
0
6
R/W
21
—
—
O
R
0
5
R/W
20
—
—
R
O
0
4
R/W
19
—
—
R
O
0
3
R/W
18
—
—
R
O
0
2
R/W
17
—
—
O
R
0
1
R/W
16
—
—
O
R
0
0