Texas Instruments DM38x DaVinci, User Manual

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Internal Modules
71 SPRUHI7A – December 2012 – Revised June 2016
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High-Definition Video Processing Subsystem (HDVPSS)
1.2.2.2.2.3 Quantized Coefficients for Color Space Converter in SDTV
This section quantizes all the coefficients of color space conversion based on a 10-bit system for SDTV
application. These coefficients can be input to the registers of programmable color space converter. Refer
to register section for the corresponding register setting.
Table 1-15. Quantized Coefficients of SDTV Application with Video Data Range
Conversion from RGB to YCbCr Conversion from YCbCr to RGB
Coefficient
Names Real Number
Format Quantized
Format Hex Format Coefficient
Names Real Number
Format Quantized
Format Hex Format
A0(13-bit) 0.299 306 0x0132 A0(13-bit) 1 1024 0x0400
B0(13-bit) 0.587 601 0x0259 B0(13-bit) -0.0003 0 0x0000
C0(13-bit) 0.114 117 0x0075 C0(13-bit) 1.3717 1405 0x057D
A1(13-bit) -0.172 -176 0x1F50 A1(13-bit) 1 1024 0x0400
B1(13-bit) -0.339 -347 0x1EA5 B1(13-bit) -0.3365 -345 0x1EA7
C1(13-bit) 0.511 523 0x020B C1(13-bit) -0.6984 -715 0x1D35
A2(13-bit) 0.511 523 0x020B A2(13-bit) 1 1024 0x0400
B2(13-bit) -0.428 -438 0x1E4A B2(13-bit) 1.7336 1775 0x06EF
C2(13-bit) -0.083 -85 0x1FAB C2(13-bit) -0.0016 -2 0x1FFE
D0(12-bit) 0 0 0x000 D0(12-bit) -176 -704 0xD40
D1(12-bit) 128 512 0x200 D1(12-bit) 132 528 0x210
D2(12-bit) 128 512 0x200 D2(12-bit) -222 -888 0xC88
Table 1-16. Quantized Coefficients of SDTV Application with Graphics Data Range
Conversion from RGB to YCbCr Conversion from YCbCr to RGB
Coefficient
Names Real Number
Format Quantized
Format Hex Format Coefficient
Names Real Number
Format Quantized
Format Hex Format
A0(13-bit) 0.257 263 0x0107 A0(13-bit) 1.1641 1192 0x04A8
B0(13-bit) 0.504 516 0x0204 B0(13-bit) -0.0018 -2 0x1FFE
C0(13-bit) 0.098 100 0x0064 C0(13-bit) 1.5958 1634 0x0662
A1(13-bit) -0.148 -152 0x1F68 A1(13-bit) 1.1641 1192 0x04A8
B1(13-bit) -0.291 -298 0x1ED6 B1(13-bit) -0.3914 -401 0x1E6F
C1(13-bit) 0.439 450 0x01C2 C1(13-bit) -0.8135 -833 0x1CBF
A2(13-bit) 0.439 450 0x01C2 A2(13-bit) 1.1641 1192 0x04A8
B2(13-bit) -0.368 -377 0x1E87 B2(13-bit) 2.0178 2066 0x0812
C2(13-bit) -0.071 -73 0x1FB7 C2(13-bit) -0.0012 -1 0x1FFF
D0(12-bit) 16 64 0x040 D0(12-bit) -223 -892 0xC84
D1(12-bit) 128 512 0x200 D1(12-bit) 136 544 0x220
D2(12-bit) 128 512 0x200 D2(12-bit) -277 -1108 0xBAC