Renesas SH7781 用户手册
19. Display Unit (DU)
Rev.1.00 Jan. 10, 2008 Page 841 of 1658
REJ09B0261-0100
19.3.1
Display Unit System Control Register
The display unit system control register (DSYSR) sets the system operation for the display unit
(DU).
(DU).
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/W
R
R
R
R/W
R
R
R
R
R
R
R
R
R
R
R
O
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
IUPD
—
—
—
DSEC
—
—
—
—
—
—
—
—
—
—
—
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
O
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
0
—
—
—
—
SCM
TVM
DEN
DRES
—
—
—
—
—
—
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 21
⎯ All
0
R
⎯ Reserved
These bits are always read as 0. The write value
should always be 0.
should always be 0.
20
DSEC
0
R/W
Yes
Display Data Endian Conversion
For details of data swap, see section 19.4.7,
Endian Conversion.
Endian Conversion.
0: Display data in memory is not byte-data/word-
data swapped
1: Display data in memory is byte-data/word-
data swapped
19 to 17
⎯ All
0
R
⎯ Reserved
These bits are always read as 0. The write value
should always be 0.
should always be 0.