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ADV7195
MR57
MR56
MR55
MR54
MR53
MR52
MR51
MR50
ADAPTIVE MODE
CONTROL
MR56
COLOR OUTPUT
SWAP
MR53
RGB MODE
MR51
0 MODE A
1 MODE B
0
1
DAC B = Pr
DAC C = Pr
0 DISABLE
1 ENABLE
ADAPTIVE FILTER
CONTROL
MR57
0 MODE A
1 MODE B
GAMMA
CORRECTION
MR55
0 DISABLE
1 ENABLE
GAMMA CURVE
MR54
0 CURVE A
1 CURVE B
SYNC ON PrPb
MR52
0 DISABLE
1 ENABLE
MR50
RESERVED FOR
REVISION CODE
Figure 25. Mode Register 5
Color Output Swap (MR53)
By default, DAC B is configured as the Pr output and DAC
C as the Pb output. In setting this bit to “1” the DAC out-
puts can be swapped around so that DAC B outputs Pb and
DAC C outputs Pr. Table III demonstrates this in more detail.
Adaptive Filter Control (MR57)
This bit enables the Adaptive Filter Control when set to “1.”
Sharpness Filter must be enabled as well (MR17 = “1”). The
Adaptive Filter Controls is explained in more detail under
Sharpness Filter Control and Adaptive Filter Control section.
This control is also available in RGB mode.
COLOR Y
Table III. Relationship Between Color Input Pixel Port, MR53
and DAC B, DAC C Outputs
CY (CY7–CY0)
(Address (SR4–SR0) = 06H)
In 4:4:4 Input Mode
CY7
CY6
CY5
CY4
CY3
CY2
CY1
CY0
Color Data
Analog Output
Input on Pins
Cr9–0
Cb/Cr9–0
Cr9-0
Cb/Cr9–0
MR53
0
0
1
1
Signal
DAC B
DAC C
DAC C
DAC B
COLOR CR
CY7 – CY0
COLOR Y VALUE
Figure 26. Color Y Register
In 4:2:2 Input Mode
Color Data
Analog Output
CCR (CCR7–CCR0)
(Address (SR4–SR0) = 07H)
Input on Pins
MR53
Signal
CCR7
CCR6
CCR5
CCR4
CCR3
CCR2
CCR1
CCR0
Cr9–0
0 or 1
Not Operational
Cb/Cr9–0
Cb/Cr9–0
0
1
DAC C (Pb)
DAC C (Pr)
CCR7 – CCR0
COLOR CR VALUE
Gamma Curve (MR54)
This bit selects which of the two programmable gamma curves
is to be used. When setting MR54 to “0,” the gamma correction
curve selected is Curve A. Otherwise Curve B is selected. Each
curve will have to be programmed by the user as explained in
the Gamma Correction Registers section.
Figure 27. Color Cr Register
COLOR CB
CCB (CCB7–CCB0)
(Address (SR4–SR0) = 08H)
Gamma Correction (MR55)
CCB7
CCB6
CCB5
CCB4
CCB3
CCB2
CCB1
CCB0
To enable Gamma Correction, and therefore activate the gamma
curve programmed by the user, this bit must be set to “1.” Other-
wise the programmable Gamma Correction facility is bypassed.
Programming of the gamma correction curves is explained in
the Gamma Correction Registers section.
Adaptive Mode Control (MR56)
For this control to be effective, Adaptive Filter Control must be
enabled (MR57 = “1”) as well as the Sharpness Filter (MR17 =
“1”). For filter plots, refer to Sharpness Filter Control and
Adaptive Filter Control section.
REV. A
CCB7 – CCB0
COLOR CB VALUE
Figure 28. Color Cb Register
These three 8-bit-wide registers are used to program the output
color of the internal test pattern generator, be it the lines of the
crosshatch pattern or the uniform field test pattern and are
available in PS mode and HDTV mode.
The standard used for the values for Y and the color difference
signals to obtain white, black and the saturated primary and
complementary colors conforms to the ITU-R BT 601-4 standard.
–19 –
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