
L64005 MPEG-2 Audio/Video Decoder Technical Manual
6-29
Final Rev F
Copyright 1996 by LSI Logic Corporation. All rights reserved.
ENDR[8:0]
End Row for OSD
[40:32]
ENDR[8:0] contains the line number on which this OSD
region ends in the active image area.
OSDA[11:6]
OSD Address [11:6]
[31:26]
OSDA[11:16] forms part of the 20-bit OSD record
address eld. When OSDA[11:16] is cleared, the header
for the next OSD region immediately follows the bitmap
for this region. When set, OSDA[11:16] is the physical
address in words of the next OSD eld.
STARTC[9:0] Start Column for OSD
[25:16]
STARTC[9:0] contains the column number, in pixels, on
which this OSD region begins.
OSDA[17:12] OSD Address [17:12]
[15:10]
OSDA[17:12] forms part of the 20-bit OSD record
address eld. When OSDA[17:12] is cleared, the header
for the next OSD region immediately follows the bitmap
for this region. When set, OSDA[17:12] is the physical
address in words of the next OSD eld.
ENDC[9:0]
End Column for OSD
[9:0]
ENDC[9:0] contains the column number, in pixels, on
which this OSD region ends.
6.9.3.2 Color Fields
The 16-bit color elds, COL0 through COL15, are formatted as follows.
Figure 6.16
Color Fields
Y
Luminance
[15:10]
Y contains the luminance value with CCIR601 chromatic-
ity. This value is multiplied by four before being output.
MIX
Mix Enable
8
If set, the Mix Weight eld applies to this color. If clear,
the Mix Weight eld does not apply, and the pixel output
is completely OSD.
15
10
987
43
0
Y
0
MIX
Cb
Cr