
PRELIMINARY
S3C6400X RISC MICROPROCESSOR
MULTI-FORMAT VIDEO CODEC
21-48
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.
Decoder operation
The BIT processor writes decoded coefficient without reordering-inverse zig-zag scanning. The reordering
process is performed when the inverse quantization module reads coefficients from the coefficient buffer interface.
The sub-modules such as the quantizer and AC/DC predictor handles zero if corresponding flag of coefficient is
zero.
Figure 21.39 MPEG-4 decoding case
Figure 21.39 H.264 decoding case
Note:
In the figure 21.36, figure 21.37, figure 21.38, and figure 21.39, MC+ means reconstruction, and MC- computing
residual.