Samsung S5PC110 Manual page 1745

S5PC110_UM
12.4 BLOCK DIAGRAM IN/OUT DATA FORMAT
12.4.1 CONTROL CIRCUIT AND AHB INTERFACE
This block sets and initializes the operation mode with internal registers. Use this register to set the operation
modes and conditions such as Huffman table number and restart interval value.
12.4.2 DCT/ QUANTIZATION
During compression, it transforms 8x8 image data to DCT coefficients. Then the quantization process is
performed over DCT coefficients by utilizing the quantization tables. During decompression, dequantization is
done and then a DCT coefficient is transformed into image data.
12.4.3 HUFFMAN CODER AND MARKER PROCESS
During compression, Huffman encoding is performed based on the Huffman table and marker process generates
the JPEG bit stream. During decompression, marker process parses a JPEG file and Huffman decoding is done.
12.4.4 QUANTIZATION TABLE
It is the place to store quantization tables.
12.4.5 HUFFMAN TABLE
It is the place to store Huffman tables.
12.4.6 PERFORMANCE
JPEG IP supports compression/ decompression of image file with size up to 8192x8192.
Supported minimum size is 32x32.
RGB565 (1plane)
YCbCr4:2:2 (1plane)
YCbCr4:4:4
YCbCr4:2:2
YCbCr4:2:0
8bit gray
Figure 12-2
JPEG
Encoder
JPEG
YCbCr4:2:2 (1plane)
Decoder
YCbCr4:2:0 (2plane)
JPEG In/Output Data Format
YCbCr4:2:2
YCbCr4:2:0
12 11BJPEG
12-3