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Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
Field
31–18
Reserved, must be cleared.
17–12
Red level (color display). Represents the red component level in the color.
R
11–6
Green level (color display). Represents the green component level in the color.
G
5–0
Blue level (color display). Represents the blue component level in the color.
B
22.4
Functional Description
The following sections describe the operation of the LCD controller with various industry standard LCD
displays.
22.4.1
LCD Screen Format
The number of pixels forming the screen width and screen height of the LCD panel are software
programmable.
Figure 22-27
The screen width (XMAX) and screen height (YMAX) parameters specify the LCD panel size. The LCDC
begins scanning the display memory at the location pointed to by the screen starting address register
(LCD_SSAR), represented by the shaded area in
The maximum page width is specified by the virtual page width (VPW) parameter. Virtual page height
(VPH) does not affect the LCDC and is limited only by memory size. By changing the SSA register, a
Freescale Semiconductor
Table 22-32. Eight Bits Per Pixel Active Matrix Color Mode
shows the relationship between the screen size and memory window.
Virtual Page Width (VPW)
Screen Starting Address (SSA)
Figure 22-27. LCD Screen Format
MCF5329 Reference Manual, Rev 3
Liquid Crystal Display Controller (LCDC)
R
G
Description
Screen Width (XMAX)
Figure
22-27, for display on the LCD panel.
8
7
6
5
4
3
2
1
0
B
22-29
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