Rotation - Samsung S3C2416 User Manual

S3C2416X RISC MICROPROCESSOR
4.1.10 Related Registers
COORD_0
COORD_1
FG_COLOR
BG_COLOR
ROP_REG
CMD7_REG
CMD4_REG/CMD5_REG

4.2 ROTATION

The pixels can be rotated around the reference point (ox, oy) by 90/180/270 degree clockwise or perform a X-
axis/Y-axis flip around the horizontal or vertical line on which (ox, oy) lies. The effects of all rotation options are
summarized in the following table and illustrated in Figure 18-8.
4.2.1 Related Registers
ROT_OC_REG
ROTATE_REG
Coordinate of the leftmost topmost coordinate of the destination window
Coordinate of the rightmost bottommost coordinate of the destination window
Foreground Color
Background Color
Enable/disable Transparent Mode
The base address of the font data. Note that writing to this register starts the
rendering process in the memory-to-screen mode.
The host provides the font data through these two command registers. When the
host writes the first 32-bit data into CMD4_REG, the rendering process starts in
the host-to-screen mode. Then the host should provide the rest of data by writing
them into CMD5_REG continuously.
Coordinate of the rotation reference point
Rotation mode configuration
2D
18-9