L64105 LSI Logic Corporation, L64105 Datasheet - Page 321

• Manufacturer Part Number: L64105
• Description: Mpeg-2 Audio/video Decoder
• Manufacturer: LSI Logic Corporation

Figure 9.16 OSD Storage Formats
OSD Odd Field Pointer
OSD Odd Field Pointer
Bitmap
Header
Data
Termination
Bitmap Data
Bitmap Data
Bitmap Data
Bitmap Data
Bitmap
for Area 1
Header
for Area 2
for Area 1
for Area 1
In Linked List OSD Mode, the OSD areas do not need to reside
consecutively in memory. The first OSD area for each field is addressed
using the programmed OSD pointers. Subsequent OSD areas are
addressed using the OSD address bits, OSDA[18:0], of the current OSD
header. To terminate the Linked List OSD, the OSD address in the
header for the last area should point to a termination header that has a
start row (STARTR) below the last line of the display.
On-Screen Display
Data
Frame 1
Frame 1
Frame n
Frame n
Header
Header
Header
Header
Header
Header
Termination
Header
Contiguous OSD
Linked List OSD
OSD Even Field Pointer
OSD Even Field Pointer
Bitmap
Header
Termination
Data
Bitmap Data
Bitmap Data
Bitmap Data
Bitmap Data
for Area 1
for Area 2
for Area 1
for Area 1
Frame 1
Frame 1
Frame n
Frame n
Header
Header
Header
Header
Header
Header
Header
Bitmap
Data
Termination
Header
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