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TVP4020
Programmers Reference Manual
Graphics Programming
97
0
8
16
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31
Enable
TestMode
TestData
RejectTexel
TexelDisableUpdate
Reserved
Figure 5.30
YUVMode Register
The TestData bit controls when the chroma test occurs in relation to the
color conversion. Setting this bit causes the chroma test to occur on the
output of the unit; clearing it causes the chroma test to occur on the
input i.e. after or before color conversion respectively, assuming the
Enable bit is set.
The TestMode can be set to:
Accept, i.e. pass test if (upper bound <= color >= lower bound
Reject, i.e. fail test if (upper bound <= color >= lower bound
0
8
16
24
31
Blue
Alpha
Green
Red
Figure 5.31
ChromaUpperBound and ChromaLowerBound Registers RGB Format
0
8
16
24
31
V
Alpha
U
Y
Figure 5.32
ChromaUpperBound and ChromaLowerBound Registers YUV Format
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 ...