19. Display Unit (DU)
Rev.1.00 Jan. 10, 2008 Page 843 of 1658
REJ09B0261-0100
Bit Bit
Name
Initial
Value R/W
Internal
Update Description
9 DRES
1 R/W
None
Display
Reset
8 DEN 0 R/W
Yes
Display
Enable
00: Starts display synchronization operation.
In the case of a register not yet set,
unexpected operation may occur; hence
DRES should be set to 0 after setting all the
registers in the display unit (DU).
When DEN = 0, the display data is the value
set in the display-off output register (DOOR).
01: Starts display synchronization operation.
In the case of a register not yet set,
unexpected operation may occur; hence
DRES and DEN should be set to 0 and 1
respectively after setting all the registers in
the display unit (DU).
When DEN = 1, the display data is the value
stored in memory from the next frame.
10: Halts display and synchronization operation.
Halts display operation and synchronization
operation. Except for the following bits in
DSSR, register settings are held.
For these settings, operation is as follows.
1. All display data output is 0.
2. The following bits in DSSR are cleared to
0.
⎯
TV sync signal error flag (TVR)
⎯
Frame flag (FRM)
⎯
Vertical blanking flag (VBK)
⎯
Raster interrupt flag (RINT)
⎯
Horizontal blanking flag (HBK)
3. The
HSYNC
,
VSYNC
, ODDF pins are input
pins.
However, when the ODPM bit in DSMR is 1, the
ODDF pin output is clamped.
11: Setting prohibited
Summary of Contents for SH7781
Page 4: ...Rev 1 00 Jan 10 2008 Page iv of xxx REJ09B0261 0100 ...
Page 74: ...2 Programming Model Rev 1 00 Jan 10 2008 Page 44 of 1658 REJ09B0261 0100 ...
Page 272: ...8 Caches Rev 1 00 Jan 10 2008 Page 242 of 1658 REJ09B0261 0100 ...
Page 376: ...10 Interrupt Controller INTC Rev 1 00 Jan 10 2008 Page 346 of 1658 REJ09B0261 0100 ...
Page 694: ...13 PCI Controller PCIC Rev 1 00 Jan 10 2008 Page 664 of 1658 REJ09B0261 0100 ...
Page 762: ...14 Direct Memory Access Controller DMAC Rev 1 00 Jan 10 2008 Page 732 of 1658 REJ09B0261 0100 ...
Page 788: ...15 Clock Pulse Generator CPG Rev 1 00 Jan 10 2008 Page 758 of 1658 REJ09B0261 0100 ...
Page 828: ...17 Power Down Mode Rev 1 00 Jan 10 2008 Page 798 of 1658 REJ09B0261 0100 ...
Page 846: ...18 Timer Unit TMU Rev 1 00 Jan 10 2008 Page 816 of 1658 REJ09B0261 0100 ...
Page 1292: ...24 Multimedia Card Interface MMCIF Rev 1 00 Jan 10 2008 Page 1262 of 1658 REJ09B0261 0100 ...
Page 1326: ...25 Audio Codec Interface HAC Rev 1 00 Jan 10 2008 Page 1296 of 1658 REJ09B0261 0100 ...
Page 1482: ...28 General Purpose I O Ports GPIO Rev 1 00 Jan 10 2008 Page 1452 of 1658 REJ09B0261 0100 ...
Page 1538: ...30 User Debugging Interface H UDI Rev 1 00 Jan 10 2008 Page 1508 of 1658 REJ09B0261 0100 ...
Page 1688: ...Appendix Rev 1 00 Jan 10 2008 Page 1658 of 1658 REJ09B0261 0100 ...
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Page 1692: ...SH7785 Hardware Manual ...