PXD20RM Datasheet, PDF (338/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

• Safety mode for tagging pixels on highest priority layers
• Digital video input with and without sync extraction per ITU-R BT.656 supporting multiple video
input formats including RGB666, RGB565, monochrome and YCbCr422
• Dedicated memory blocks to store a cursor and Color Look Up Tables (CLUTs)
• Temporal Dithering.
Each graphic layer has the following attributes:
• Can be placed with one pixel resolution in either axis
• Can also be placed in negative X and Y directions
• Supports multiple color-encoding formats including:
— 1, 2, 4 and 8 bits per pixel indexed colors with alpha channel
— APAL8 indexed colors with alpha channel
— RGB565 and RGB888 direct colors
— ARGB1555, ARGB4444, and BGRA8888 direct colors with an alpha channel
— YCbCr422 format
• Alpha blending with 8-bit resolution
• Chroma-key blending for anti-mask encoding
• Multiple alpha and chroma-key blending modes
• Transparency modes for anti-aliased text and graphics
• Luminance mode for highlighting content
• Tile mode for efficient creation of textured background content
• Support for Run Length Encoding (RLE) compression
• Optimized mode for use with DDR memory
11.1.3 Modes of operation
The DCU3 has four modes of operation:
• DCU_OFF: When in this mode, the DCU3 is turned off. All the logic in the design is put in reset
state to reduce power.
• NORMAL_MODE: The DCU3 displays and blends the graphics specified by the layer
descriptors.
• PDI_MODE: A mode which fetches video from an external video source and combines that with
the graphics configured on the layers.
• COLBAR_MODE: Color bar generation for testing purposes.
11-4
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor