22 de signal width register (dewr) – Renesas SH7781 User Manual
Page 907
19. Display Unit (DU)
Rev.1.00 Jan. 10, 2008 Page 877 of 1658
REJ09B0261-0100
19.3.22
DE Signal Width Register (DEWR)
The DE signal width register (DEWR) sets the high-level width of the DE signal. 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
R
R
R
R
O
O
O
O
O
O
O
O
O
O
O
—
—
—
—
—
—
—
—
—
—
—
0
0
0
0
0
DEW
—
—
—
—
—
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 11
⎯ All
0
R
⎯ Reserved
These bits are always read as 0. The write value
should always be 0.
10 to 0
DEW
Undefined R/W
Yes
DE Signal Width
The high-level width of the DE signal should be
set in dot clock units.
If the HSYNC signal falls while the DE signal is
at high level, the DE signal also falls.