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POST PROCESSOR
4. DMA operation of Source and Destination Image
There are three address categories such as start address, end address and offset address for DMA operation.
Each address category consists of three source address components of Y/Cb/Cr and three destination address
component of RGB/oCb/oCr. If a source image is stored in the non-interleaved format such as YCbCr420, all
source address components are valid as shown in Figure 15-6 (a). If a source image is stored by the interleaved
format such as a RGB graphic format or an YCbCr422 format, only Y component of three source components is
valid and two chroma address components are invalid as shown in Figure 15-6 (b). If a destination image is
stored in the non-interleaved format such as YCbCr420, all source address components RGB/oCb/oCr are valid
as shown in Figure 15-6 (a). If a source image is stored by the interleaved format such as a RGB graphic format
or an YCbCr422 format, only RGB component of three source components is valid and two chroma address
components of oCb/oCr are invalid as shown in Figure 15-6 (b).
ADDRStart_Y
ADDREnd_Y
ADDRStart_Cb
ADDREnd_Cb
ADDRStart_Cr
ADDREnd_Cr
ADDRStart RGB
ADDREnd_RGB
ADDRStart_oCb
ADDREnd_oCb
ADDRStart_oCr
ADDREnd_oCr
Figure 15-6 Start and end address set according to memory allocation type Block Diagram
Preliminary product information describe products that are in development,
15-10
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
Y
Source Image
Cb
Cr
Y
Destination Image
Cb
Cr
(a) Non-Interleaving
S3C6400X RISC MICROPROCESSOR
Video Data
ADDRStart_Y
ADDREnd_Y
Or
Graphic Data
ADDRStart_RGB
RGB
ADDREnd_RGB
(b) Interleaving
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