PRELIMINARY
FIMV-MFC V1.0
MULTI-FORMAT
VIDEO
CODEC
2
1-45
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.
Coefficient Buffer Interface
The coefficient buffer interface provides a channel for the BIT processor to read quantized coefficients resulted
from encoding process or to send variable-length-decoded coefficients to the video codec module for decoding
process. The coefficient buffer interface also performs reordering of coefficients based on the scan type.
Block diagram
Figure 21.35 illustrates the block diagram of the coefficient buffer interface. All sub-modules related to processing
coefficient as input or as output are connected to the coefficient buffer interface. The BIT processor sets scan type
based on the result from encoding process or from decoding process. To remove reading coefficient with zero-
value, there are flag registers-6x64 bits- to indicate it.
Figure 21.35 Coefficient memory interface block diagram