SH7785 Datasheet, PDF (931/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

19. Display Unit (DU)
Bit
7 to 0
Initial
Bit Name Value R/W
PnALPHA Undefined R/W
Internal
Update Description
Yes
Plane n Blending Ratio
The alpha value (α) which is the blend ratio for
plane n should be set.
Blending result = (α × plane n + (H'100 − α) ×
lower plane)/ H'100
Note: Blending result, α, plane n, and lower
plane in the above formula are all 8-bit
data.
19.3.34 Plane n Display Size X Register (PnDSXR) (n = 1 to 6)
The plane n display size X registers (PnDSXR, n = 1 to 6) set the display size in the horizontal
direction of plane n. The value is retained during power-on reset and manual reset.
Bit: 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
————————————————
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W: R R R R R R R R R R R R R R R R
Internal update:
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
—————
PnDSX
Initial value: 0
0
0
0
0 ———————————
R/W: R 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/W
Internal update:
OOOOOOOOOOO
Initial
Bit
Bit Name Value R/W
31 to 11 ⎯
All 0
R
10 to 0 PnDSX Undefined R/W
Internal
Update Description
⎯
Reserved
These bits are always read as 0. The write value
should always be 0.
Yes
Plane n Display Size X
The horizontal-direction display size of plane n
should be set in dot clock units.
Note: When YC is set by the PnDDF bit in
PnMR, this value should be set to an even
number.
Rev.1.00 Jan. 10, 2008 Page 901 of 1658
REJ09B0261-0100