Digital camera interface (DCMI) RM0090
466/1731 DocID018909 Rev 11
15.6 Data format description
15.6.1 Data formats
Three types of data are supported:
• 8-bit progressive video: either monochrome or raw Bayer format
• YCbCr 4:2:2 progressive video
• RGB565 progressive video. A pixel coded in 16 bits (5 bits for blue, 5 bits for red, 6 bits
for green) takes two clock cycles to be transferred.
Compressed data: JPEG
For B&W, YCbCr or RGB data, the maximum input size is 2048 × 2048 pixels. No limit in
JPEG compressed mode.
For monochrome, RGB & YCbCr, the frame buffer is stored in raster mode. 32-bit words are
used. Only the little endian format is supported.
Figure 80. Pixel raster scan order
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
0IXELRASTER
SCANORDER
INCREASING
ADDRESSES
7ORD
7ORD
7ORD
0IXELROW
0IXELROWNn
AI
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
To Next Page
Loading...
Need help?
General
