19-8
MC9328MX1 Reference Manual
MOTOROLA
LCD Controller
Figure 19-6. Gray-Scale Pixel Generation
19.3.6 Color Generation
The value corresponding to each color pixel on the screen is represented by a 4-, 8-, 12- or 16-bit code in
the display memory.
For the 4- and 8- bit modes use the LCDC’s color mapping RAM to map the data to a 12-bit RGB code.
For passive matrix color displays, 4-bit and 8-bit mode, the 12-bit RGB code from the mapping RAM is
output to the FRC blocks that independently process the code corresponding to the red, green, and blue
components of each pixel to generate the required shade and intensity.
For active matrix display, the 12-bit output from the mapping RAM is output to the panel.
For 12-bit mode for passive matrix color display, the mapping RAM is by-passed and output directly to the
FRC block.
In 16-bit mode, pixel data is simply moved from display memory to the 16-bit LCDC output bus.
For active matrix displays, the 16-bit RGB code from the mapping RAM is output to the panel. For passive
color display, the maximum color depth is 12-bit and 16-bit color is not supported.
Figure 19-7 and Figure 19-8 on page 19-9 illustrate passive matrix and active matrix color pixel
generation.
1 0
1 1 0 0
7 6 5 4 3 2 1 0
2 bpp Data
4 bpp Data
1 0
1
1
-
-
-
-
-
-
-
-
FRC
1
To Panel
Содержание DragonBall MC9328MX1
Страница 68: ...1 12 MC9328MX1 Reference Manual MOTOROLA Introduction ...
Страница 86: ...2 18 MC9328MX1 Reference Manual MOTOROLA Signal Descriptions and Pin Assignments ...
Страница 116: ...3 30 MC9328MX1 Reference Manual MOTOROLA Memory Map ...
Страница 126: ...4 10 MC9328MX1 Reference Manual MOTOROLA ARM920T Processor ...
Страница 160: ...8 8 MC9328MX1 Reference Manual MOTOROLA System Control ...
Страница 272: ...13 32 MC9328MX1 Reference Manual MOTOROLA DMA Controller ...
Страница 281: ...Programming Model MOTOROLA Watchdog Timer Module 14 9 ...
Страница 282: ...14 10 MC9328MX1 Reference Manual MOTOROLA Watchdog Timer Module ...
Страница 300: ...15 18 MC9328MX1 Reference Manual MOTOROLA Analog Signal Processor ASP ...
Страница 438: ...18 16 MC9328MX1 Reference Manual MOTOROLA Serial Peripheral Interface Modules SPI 1 and SPI 2 ...
Страница 478: ...19 40 MC9328MX1 Reference Manual MOTOROLA LCD Controller ...
Страница 542: ...20 64 MC9328MX1 Reference Manual MOTOROLA Multimedia Card Secure Digital Host Controller Module MMC SD ...
Страница 574: ...21 32 MC9328MX1 Reference Manual MOTOROLA Memory Stick Host Controller MSHC Module ...
Страница 598: ...23 16 MC9328MX1 Reference Manual MOTOROLA Real Time Clock RTC ...
Страница 670: ...24 72 MC9328MX1 Reference Manual MOTOROLA SDRAM Memory Controller ...
Страница 726: ...25 56 MC9328MX1 Reference Manual MOTOROLA SmartCard Interface Module SIM ...
Страница 736: ...26 10 MC9328MX1 Reference Manual MOTOROLA General Purpose Timers ...
Страница 854: ...29 18 MC9328MX1 Reference Manual MOTOROLA I2C Module ...
Страница 900: ...30 46 MC9328MX1 Reference Manual MOTOROLA Synchronous Serial Interface SSI ...
Страница 942: ...32 26 MC9328MX1 Reference Manual MOTOROLA GPIO Module and I O Multiplexer IOMUX ...