Camera Interlace Input Support - Samsung S5PC110 Manual

S5PC110_UM

2.7.9 CAMERA INTERLACE INPUT SUPPORT

To get data from the external camera, S5PC110 provides two modes, namely, ITU-R BT 601 YCbCr 8-bit mode
and ITU-R BT 656 YCbCr 8-bit mode. It supports progressive input and interlaced input in both the modes.
2.7.9.1 Progressive Input
In progressive mode, all the input data is stored in four buffers (that is in ping-pong memory designated by SFR)
sequentially by the unit of frame. For more information, refer to
2.7.9.2 Interlaced Input
In interlaced mode, all the input data is stored in four buffers (that is in ping-pong memory designated by SFR).
However, in this mode, both field frame data and odd field frame data are stored successively. Therefore, even
field frame data is stored in first and third ping-pong memories, while odd field frame data is stored second and
fourth ping-pong memories. In case of image capture, start frame is always even field frame.
CAMERA
C
Even line
Even
CAMERA
Odd line
Odd
CAMERA
Even line
Even
CAMERA
Odd line
Odd
FIMC
st
1 frame (E ven field)
FIMC
n d
2 f r a m e ( O d d f i e l d )
FIMC
rd
3 frame (E ven field)
FIMC
st
4 frame (Odd field)
Figure 2-20 Frame Buffer Control
Figure 2-20.
Through
Frame mem. 1st
A A H H B B b b u u s s
DMA
Through
A H B b u s Frame mem. 2nd
A H B b u s
DMA
Frame mem. 3rd
Through
A A H H B B b b u u s s
DMA
Through
Frame mem. 4st
A A H H B B b b u u s s
DMA
2 1BCAMERA INTERFACE
pingpong
pingpong
pingpong
2-21