ST STM32L4+ Series Reference Manual page 775

RM0432
24.3.11 DCMI data format description
Data formats
Three types of data are supported:
•
8/10/12/14-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 (black and white), YCbCr or RGB data, the maximum input size is 2048 × 2048
pixels. No limit in JPEG compressed mode.
For monochrome, RGB and YCbCr, the frame buffer is stored in raster mode. 32-bit words
are used. Only the little-endian format is supported.
Monochrome format
Characteristics:
•
Raster format
• 8 bits per pixel
The table below shows how the data are stored.
Byte address
RGB format
Characteristics:
•
Raster format
•
RGB
•
Interleaved: one buffer: R, G and B interleaved (such as BRGBRGBRG)
•
Optimized for display output
Figure 175. Pixel raster scan order
Table 159. Data storage in monochrome progressive video format
31:24
0 n + 3
4 n + 7
23:16
n + 2
n + 6
RM0432 Rev 6
Digital camera interface (DCMI)
15:8
n + 1
n + 5
7:0
n
n + 4
775/2301
789