
PRELIMINARY
S3C6400X RISC MICROPROCESSOR
JPEG CODEC
22-1
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.
22
JPEG CODEC
This chapter describes the functions and usage of JPEG CODEC in S3C6400.
OVERVIEW
The JPEG codec core is composed of control circuit, DCT/quantization, Huffman coder, marker process block,
and AHB slave interface control as shown in Figure 22-1. Both input/output image data bus and compressed data
bus are 8-bits. It has control registers inside. It is possible to set the operation modes, specify the Huffman table
number and DRI value into these registers.
FEATURE
The JPEG CODEC includes the following features:
z
Compression/decompression up to UXGA.
z
Encoding format : YCbCr4:2:2 or YCbCr4:2:0
z
Decoding format : YCbCr4:4:4, YCbCr4:2:2, YCbCr4:2:0 or Gray.
z
Support the compression of memory data in YCbCr4:2:2 or RGB565 format.(Input raw data)
z
Support the general-purpose color converter.