ch5001a ETC-unknow, ch5001a Datasheet - Page 24

• Manufacturer Part Number: ch5001a
• Description: Cmos Color Digital Video Camera
• Manufacturer: ETC-unknow

Matrix Coefficient Registers
Registers CSC11, CSC12, CSC13, CSC14, CSC21, CSC22, CSC23, CSC24, CSC31, CSC32, CSC33 and CSC34
specify the color space conversion matrix values used to convert from the color space of the filters to the RGB
domain dictated by television phosphors. The values are 2’s complement and 64 will be added to each value
internally to make the range of possible values -64 to +191. There is a second set of fixed matrix multiplier
coefficient values that can be multiplexed with the register values under the control of the MONO pin. The matrix
multiplication equation, default register values and second set of register values are shown below:
Red Offset Register
Register ROS specifies the offset given to the red channel after color space conversion. The value is a 2’s
complement number in the range of –16 to +15. After adjustments to the matrix multiplier coefficients have been
made, this value can be used to perform a black balance adjustment.
Table 10. Register Values for Color Space Conversion Matrix
CHRONTEL
24
BIT:
SYMBOL:
TYPE:
DEFAULT:
BIT:
SYMBOL:
TYPE:
DEFAULT:
Output
Register (H)
G
R
B
0A
0B
0C
0D
0E
0F
06
07
08
09
10
11
=
CSC##7
R/W
7
7
0AH
0EH
06H
Decimal
Matrix Coefficient Register
-52
-52
-64
-64
-32
-32
-64
-64
-64
-64
40
-5
Default Value
0BH
07H
0FH
CSC##6
R/W
6
6
1111 1011
1100 1100
1100 1100
1100 0000
1100 0000
1110 0000
1110 0000
1100 0000
1100 0000
1100 0000
1100 0000
0010 1000
0CH
08H
10H
Binary
CSC##5
R/W
5
5
0DH
09H
11H
CSC##4
‘MONO’ Multiplexed Value
Decimal
ROS4
R/W
R/W
*
4
0
4
-48
-48
-48
-48
-48
-48
-48
-48
-48
-48
-48
-48
Input
Pg1
Pg2
Pb
Pr
CSC##3
ROS3
R/W
R/W
1101 0000
1101 0000
1101 0000
1101 0000
1101 0000
1101 0000
1101 0000
1101 0000
1101 0000
1101 0000
1101 0000
1101 0000
3
0
3
Binary
CSC##2
ROS2
R/W
R/W
2
0
2
Symbol:CSC11-CSC34
Address:06h-11h
Bits:8 each
Symbol:ROS
Address:12h
Bits:5
201-0000-032 Rev 3.0, 6/2/99
CSC##1
ROS1
R/W
R/W
1
0
1
CH5001A
CSC##0
ROS0
R/W
R/W
0
0
0