Input Dma Feature - Samsung S5PC110 Manual

S5PC110_UM

2.7.8 INPUT DMA FEATURE

Input DMA supports memory data scaling.
Two different image data are required for Picture-in-Picture (PIP) operation. The first image is saved in memory by
codecs like H.264, Camera, MPEG4, and so on, while the second image is saved in memory via input DMA path.
The input DMA path comprises of YCbCr/RGB output format through scaler/ DMA path. The LCD controller
displays and controls the two images.
If input DMA (reading the memory data) is used in the path, SEL_DMA_CAM (MSCTRL bit [3]) signal must be set
to '1'. This input path is called Memory Scaling DMA path. The window zoom function is disabled in Memory
Scaling DMA path.
NOTE: The memory image format for input DMA input includes:
−
YCbCr 4:2:0 (non-interleave)
−
YCbCr 4:2:2 (non-interleave)
−
YCbCr 4:2:2 (Interleave)
−
RGB
Figure 2-19 Input DMA or External Camera Interface
2 1BCAMERA INTERFACE
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