L64105 LSI Logic Corporation, L64105 Datasheet - Page 318

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

9.9.2.2 Header Control Information
Figure 9.14 OSD Header Control Fields
9-26
HIC[1]
15
15
OSDA[11:6]
14
OSDA[5:0]
10 9
SDRAM Word 2
SDRAM Word 0
The layout of the control information in the OSD header is shown in
Figure
HIC[1:0]
Table 9.8
OSDA[18:0]
STARTR[8:0] OSD Start Row
Video Interface
9 8
HIC[1:0]
0b00
0b01
0b10
0b11
9.14.
STARTC[9:0]
STARTR[8:0]
Description
High Color Modes
2 bits/pixel
8 bits/pixel
4 bits/pixel
Reserved
High Color Mode
These two bits are used to set 2-, 4-, or 8-bit color mode
according to
OSD Address
Word 0 [14:9], Word 1 Bit 9, Word 2 [15:10], Word 3
[15:10]
When programmed, OSDA[18:0] contains the SDRAM
address of the next OSD display area in a linked list.
These fields are ignored in contiguous OSD mode.
The field line number (0 to 313) from the offset of the new
field time where this OSD area begins is written into
STARTR[8:0]. STARTR[8:0] is also used to end a linked-
list OSD display by pointing to a line below the main
display area.
0 15
0 15
Table
MIX[3:0]
OSDA[17:12]
9.8.
12 11 10
Word 0 bit 15 and Word 1 bit 11
SDRAM Word 3
SDRAM Word 1
10 9
9
8
ENDC[9:0]
ENDR[8:0]
Word 0 [8:0]
0
0