19. Display Unit (DU)
Rev.1.00 Jan. 10, 2008 Page 949 of 1658
REJ09B0261-0100
Plane Priority Order:
The display priority order for planes is set using DPPR; if one plane is set
in two or more places in the priority order, the place with highest priority is selected.
For example, if the setting in DPPR is H'00CBD888, then the results of the priority order and
display on/off settings are as follows.
Plane with priority 1
Plane 1
Plane with priority 2
No corresponding plane
Plane with priority 3
No corresponding plane
Plane with priority 4
Plane 6
Plane with priority 5
Plane 4
Plane with priority 6
Plane 5
Display off planes
Plane 2 and plane 3
19.4.11
Blinking
For each plane, blinking operation can be performed by using the display area start address 0 and
1 registers.
Usually, double buffer control is performed for each plane according to the setting of the PnBM
bit in PnMR. However, blinking is performed with the period specified by the PnBTA and PnBTB
bits in PnBTR by setting the PnBM bits in PnMR to 10 (Auto display change mode (blinking
mode)). If the PnBTA and PnBTB bits are set to 0, operation is the same as when set to 1.
(m-1)th frame
m-th frame
First frame
Second frame
VSYNC
Operation of
the display unit (DU)
A0 is displayed on screen
A1 is displayed on screen
A0: Display area start address 0
A1: Display area start address 1
PnBTA (A0 display period is set)
PnBTB (A1 display period is set)
(Internal counter)
Blinking period
setting
BTA-1 BTA
0
1
Buffer switching performed
according to blinking period
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 ...