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S3C6400X RISC MICROPROCESSOR
Reserved
The calculation in YCbCr converter is based on the following matrix. YCbCr converter is used when SWSEL =
0x2 (RGB565) on encode mode.
Figure 22-9. Relationship matrix between RGB and YCbCr format
MISC
Register
MISC
MISC
Reserved
MODE_SEL
Reserved
MODE_Y16
Reserved
The DMS bit selects which decoding mode is to be used. When the bit is 0, the normal decoding procedure will be
used. When the DMS bit is 1, the incremental decoding mode is selected. In the mode, the JPEG unit decodes
the first 8 lines or 16 lines of an encoded image and then enables the partial_line_ready signal. After this, the
[7:0]
R/W
Reserved
R
COEF11
G
=
COEF21
B
COEF31
Address
0x7880102C
Bit
R/W
[31:8]
-
Reserved
Mode selector
0x1 : Memory (YCbCr4:2:2)
[7:5]
R/W
0x2 : Memory (RGB 565)
Others are prohibited.
[4:2]
-
Reserved. It has to be zero.
MODE_Y16
0 : c1 = 0
[1]
R/W
1 : c1 = 16
Refer to the explanation of COEF11 – COEF33
[0]
-
Reserved
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.
0
COEF13
COEF22
COEF23
*
COEF32
0
Description
Miscellaneous
Description
JPEG CODEC
Y - c1
Cb - 128
Cr - 128
Reset Value
0x0000_0000
22-25
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