HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 978
HD6417320
Manufacturer Part Number
HD6417320
Description
Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
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Section 26
2. The register settings for the address of the image data must be changed (LDSARU and
3. LDLAOR should be power of 2 (when the horizontal width after rotation is 240 pixels,
4. Graphics software should be set up for the number 3 setting.
5. LDSARU should be changed to represent the address of the data for the lower-left pixel of the
For example, the registers have been set up for the display of image data in landscape format (320
× 240), which starts from LDSARU = 0x0c001000, on a 320 × 240 LCD panel. The graphics
driver software is complete. Some changes are required to apply hardware rotation and use the
panel as a 240 × 320 display. If LDLAOR is 512, the graphics driver software uses this power of 2
as the offset for the calculation of the addresses of Y coordinates in the image data. Before setting
ROT to 1, the image data must be redrawn to suit the 240 × 320 LCD panel. LDLAOR will then
be 256 because the size has changed and the graphics driver software must be altered accordingly.
Rev. 3.00 Jan. 18, 2008 Page 916 of 1458
REJ09B0033-0300
LDLAOR).
LDLAOR should be set to 256).
image rather than of the data for the upper-left pixel of the image.
1) Normal mode
Picture image
LCD panel
LCD Controller (LCDC)
Figure 26.8
LDSARU (start point)
Start point
Operation for Hardware Rotation (Normal Mode)
Picture image
Picture image
LDSARU + LDLAOR − 1
LDSARU + LDLAOR × LDVDLNR − 1(end point)
End point
Scanning starts from LDSARU.
Scanning is done from small address
to large address of X coordination.
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