Samsung S3C6400X User Manual page 572

S3C6400X RISC MICROPROCESSOR
CAMERA INTERFACE OPERATION
FOUR DMA PORTS
Camera Interface has Four DMA port. MSDMA input for preview, MSDMA input for codec, P-port(Preview out
port) and C-port(Codec out port) are separated from each other on AHB bus. At the view of system bus, four ports
are independent. The MSDMA reads the YCbCr 4:2:0 or YCbCr 4:2:2 or RGB image. The P-port and C-port store
YCbCr 4:2:0 or YCbCr 4:2:2 or RGB image data in the memory. The P-port and C-port can be selected memory
input data through MSDMA or camera input data through Camera. These four master ports support the variable
applications like DSC (Digital Steel 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.
The register setting can separately disabled for four DMA port.
External
Camera
Processor
External
Camera
Processor
ITU format
Window cut
ITU format
Figure 20-6. DMA ports through Camera processor data
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.
P-port
CAMIF
C-port
P-port
CAMIF
C-port
CAMERA INTERFACE
Frame Memory (SDRAM)
Preview
YCbCr 4:2:0
YCbCr 4:2:2
RGB 16/18/24 bit
Codec
YCbCr 4:2:0
YCbCr 4:2:2
RGB 16/18/24 bit
Frame Memory (SDRAM)
Preview
YCbCr 4:2:0
YCbCr 4:2:2
RGB 16/18/24 bit
Codec
YCbCr 4:2:0
YCbCr 4:2:2
RGB 16/18/24 bit
20-7