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PRELIMINARY
JPEG CODEC
S3C6400X RISC MICROPROCESSOR
22-6
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.
JPGDRI
Reset interval registers
Essential
--
JPGY
Vertical size register
Essential
JPGX Horizontal
size
register Essential
QTBL0
Quantizer table0 entry register.
Essential
--
QTBL1
Quantizer table1 entry register
Essential
--
QTBL2
Quantizer table2 entry register
Essential
--
QTBL3
Quantizer table3 entry register
Essential
--
HDTBL0,
HDCTBLG0
DC Huffman table0 entry register Essential
--
HACTBL0,
HACTBLG0
AC Huffman table0 entry register
Essential
--
HDCTBL1,
HDCTBLG1
DC Huffman table1 entry register Essential
--
HACTBL1,
HACTBLG1
AC Huffman table1 entry register
Essential
--
The contents of any register in Table 2 will not be changed unless they are written again or they are reset
Therefore it is possible to process the next frame by only performing the process start command, after a frame
process is completed. It is restarted by writing 0x1 on the
SW_JSTART
register.
JPEC CODEC PROGRAMMING GUIDE
JPEG engine has its own internal pending flag that is cleared by reading a
JPGIRQ
by software.
If all processes are finished, read
JPGSTS
to clear all internal interrupt pending flags.