Samsung S3C2451X User Manual page 597

S3C2451X RISC MICROPROCESSOR
EXTERNAL/INTERNAL CONNECTION GUIDE
All CAMIF input signals should not occur inter-skewing to pixel clock line.
Camera A
CAMERA INTERFACE OPERATION
TWO DMA PORTS
CAMIF has two DMA port. P-port(Preview port) and C-port(Codec port) are separated from each other on AHB
bus. At the view of system bus, two ports are independent. The P-port stores the RGB image data into memory
for preview. The C-port stores the YCbCr 4:2:0 or 4:2:2 image data or RGB image data into memory for Codec as
MPEG-4, H.263, etc. These two master ports support the variable applications like DSC (Digital Still Camera),
MPEG-4 video conference, video recording, etc. For example, P-port image can be used as preview image, and
C-port image can be used as JPEG image in DSC application. Also, the register setting can separately disable P-
port or C-port.
CAMCLK
CAMRST
No Skew
PDATA[7:0]
Figure 23-6. IO connection guide
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
VSYNC
HREF
PCLK
CAMERA INTERFACE
CAMIF
23-5