Digital camera interface (DCMI) RM0090
466/1749 RM0090 Rev 18
15.6.2 Monochrome format
Characteristics:
• Raster format
• 8 bits per pixel
Table 83 shows how the data are stored.
15.6.3 RGB format
Characteristics:
• Raster format
• RGB
• Interleaved: one buffer: R, G & B interleaved: BRGBRGBRG, etc.
• Optimized for display output
The RGB planar format is compatible with standard OS frame buffer display formats.
Only 16 BPP (bits per pixel): RGB565 (2 pixels per 32-bit word) is supported.
The 24 BPP (palletized format) and grayscale formats are not supported. Pixels are stored
in a raster scan order, that is from top to bottom for pixel rows, and from left to right within a
pixel row. Pixel components are R (red), G (green) and B (blue). All components have the
same spatial resolution (4:4:4 format). A frame is stored in a single part, with the
components interleaved on a pixel basis.
Table 84 shows how the data are stored.
15.6.4 YCbCr format
Characteristics:
• Raster format
• YCbCr 4:2:2
• Interleaved: one Buffer: Y, Cb & Cr interleaved: CbYCrYCbYCr, etc.
Pixel components are Y (luminance or “luma”), Cb and Cr (chrominance or “chroma” blue
and red). Each component is encoded in 8 bits. Luma and chroma are stored together
(interleaved) as shown in Table 85.
Table 83. Data storage in monochrome progressive video format
Byte address 31:24 23:16 15:8 7:0
0 n + 3 n + 2 n + 1 n
4 n + 7 n + 6 n + 5 n + 4
Table 84. Data storage in RGB progressive video format
Byte address 31:27 26:21 20:16 15:11 10:5 4:0
0 Red n + 1 Green n + 1 Blue n + 1 Red n Green n Blue n
4 Red n + 4 Green n + 3 Blue n + 3 Red n + 2 Green n + 2 Blue n + 2
To Next Page
Loading...
Need help?
General
