Manual Color Space Conversion Matrix; Figure 68: Single Csc Channel - Analog Devices Advantiv ADV7604 Hardware Manual

QZERO_RGB_FULL, HDMI Map, Address 0x47, [1]
This bit is used to decode the HDMI colorimetry based when the AVI InfoFrame field Q[1:0] = 2b00.
This is valid only when
Function
QZERO_RGB_FU
LL
0
1
Note: The QZERO_ITC_DIS
receiving an AVI infoframe.
8.4.5

Manual Color Space Conversion Matrix

The CSC matrix in the ADV7604 is a 3 x 3 matrix with full programmability of all coefficients in
the matrix in manual mode. Each coefficient is 13-bit wide to ensure signal integrity is maintained
in the CSC section. The CSC contains three identical processing channels, one of which is shown in
Figure 68. The main inputs labeled In_A, In_B, and In_C can come from each ADC or from the
36-bit digital input from the HDMI section. Each input to the individual channels to the CSC is
multiplied by a separate coefficient for each channel.
In Figure 68, these coefficients are marked A1, A2, and A3. The variable labeled A4 in
used as an offset control for channel A in the CSC. There is also a further CSC control bit labeled
CSC_SCALE[1:0]; this bit can be used to accommodate coefficients that extend the supported
range. The functional diagram for a single channel in the CSC as per
other two remaining channels B and C. The coefficients for these channels are called B1, B2, B3,
B4, C1, C2, C3, and C4.
In_A [11:0]
In_B [11:0]
In_C [11:0]
The coefficients mentioned previously are detailed in
coefficients.
Rev. F August 2010
QZERO_ITC_DIS is set.
Description
RGB range is set to limited in the case of Q[1:0] = 2b00
RGB range is set to full in the case of Q[1:0] = 2b00
and QZERO_RGB_FULL
A1[12:0]
X +
A2[12:0]
X
A3[12:0]
X

Figure 68: Single CSC Channel

bits are only effective if the ADV7604 is
CSC_scale
A4[12:0]
X 2
1
+ +
0
Table 47 along with the default values for these
211
Figure 68
Figure 68 is repeated for the
Out_A [11:0]
ADV7604
is