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MB86R02 'Jade-D' Hardware Manual V1.64
Conversion Operation
RGB data is converted to YUV by the following matrix expression :
Y = a11×R + a12×G + a13×B + b1
Cb= a21×R + a22×G + a23×B + b2
Cr= a31×R + a32×G + a33×B + b3
Each coefficients can be defined by following registers.
Cb and Cr components are reduced half after this operation to form the 4:2:2 format.
RGBCMY (RGB Color convert Matrix Y coefficient)
Register
CaptureBaseAddress + C0
address
Bit number
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit field name
R/W
Initial value
This register sets the RGB color convert matrix coefficient.
Bit 31 to 22
a11
10bit signed real (lower8bit is fraction)
Bit 20 to 11
a12
10bit signed real (lower8bit is fraction)
Bit 9 to 0
a13
10bit signed real (lower8bit is fraction)
RGBCMCb (RGB Color convert Matrix Cb coefficient)
Register
CaptureBaseAddress + C4
address
Bit number
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit field name
R/W
Initial value
This register sets the RGB color convert matrix coefficient.
Bit 31 to 22
A21
10bit signed real (lower8bit is fraction)
Bit 20 to 11
A22
10bit signed real (lower8bit is fraction)
Bit 9 to 0
A23
H
a11
Re
RW
R
0001000010
0
b
H
a21
Re
RW
R
1111011010
0
b
a
10bit signed real (lower 8bit is fraction)
ij
:
b
8bit unsigned integer
i
:
a12
RW
0010000000
b
a22
RW
1110110110
b
Re
a13
R
RW
0
0000011001
b
Re
a23
R
RW
0
0001110000
b
18-133
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