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TVP4020
Programmers Reference Manual
Graphics Register Reference
169
Name:
Initial Blue Color
Unit:
Color DDA
Region: 0
Offset:
0x0000. 87B0
Tag:
0x00F6
Reset Value:
Undefined
Read/write
0
8
16
24
31
Integer
Not used
Fraction
Not used
Sign
This register is used to set the initial value for the Blue for a vertex when in Gouraud
shading mode. The value is 2's complement 9.11 fixed point format.
Name:
Chroma Lower Bound, Chroma Upper Bound
Unit:
YUV
Region: 0
Offset:
0x00008F10., 0x0000.8F08
Tag:
0x01E2, 0x01E1
Reset Value:
Undefined
Read/write
0
8
16
24
31
Blue
Alpha
Green
Red
0
8
16
24
31
V
Alpha
U
Y
Specifies the lower and upper bounds for the chroma test. The test is done against the
contents of the Texel0 register which holds data in the internal RGB format or the YUV
format (before conversion) of 8 bits per component. The test is done on all 8 bits of each
component. All components must be inside the bounds for the test to pass, if TestMode is
set to 1 in the YUVMode register, or fail if TestMode is set to 2 in the YUVMode register.
BStart
ChromaLowerBound,ChromaUpperBound
Summary of Contents for TVP4020 PERMEDIA 2
Page 1: ...Texas Instruments TVP4020 PERMEDIA 2 Programmer s Reference Manual Issue 4 ...
Page 284: ...TVP4020 Programmers Reference Manual A Gouraud Shaded Triangle 275 ...
Page 292: ...TVP4020 Programmers Reference Manual Register Tables 283 ...
Page 314: ...TVP4020 Programmers Reference Manual Index 305 ...
Page 315: ...Index TVP4020 Programmers Reference Manual 306 Index ...
Page 323: ...Index TVP4020 Programmers Reference Manual 314 ...