r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 1705

Manufacturer Part Number

r5s77631ay266bgv

Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series

Manufacturer

Renesas Electronics Corporation.

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.

The point that corresponds to LDSARU moves from the upper left to the lower left of the display,

so LDSARU should be changed to 0x0c001000 + 256 * 319.

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

Figure 37.8 Operation for Hardware Rotation (Normal Mode)

LDSARU (start point)

Picture image

LDSARU + LDLAOR − 1

LDSARU + LDLAOR × LDVDLNR − 1(end point)

Scanning starts from LDSARU.

Scanning is done from small address

to large address of X coordination.

Rev. 1.00 Oct. 01, 2007 Page 1639 of 1956

Section 37 LCD Controller (LCDC)

REJ09B0256-0100