ST92196A STMicroelectronics, ST92196A Datasheet - Page 125

• Manufacturer Part Number: ST92196A
• Description: 8/16-bit Mcu For Tv Applications With Up To 96k Rom, On-screen-display And 1 Or 2 Data Slicers
• Manufacturer: STMicroelectronics

OSD CONTROLLER (Cont’d)
Figure 59. OSDRAM Mapping
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- ON SCREEN DISPLAY CONTROLLER (OSD)
2p is the start address of the first row buffer
Notes:
a & b values depend on the row mode and
on the number of characters to display in the row
2n+b
2p+a
8Fh
00h
2n
2p
Palette
Buffer address, Mouse &
Segment 22h
OSDRAM
Row Buffer 2
Row Buffer 1
description section
2p+6
2p+5
2p+4
2p+3
2p+2
2p+1
2p
0Dh
0Ch
.
.
.
.
8Fh
6Fh
4Fh
2Fh
0Fh
0Eh
0Bh
0Ah
70h
50h
30h
10h
09h
08h
07h
06h
05h
04h
03h
02h
01h
00h
Any even address between 50h and 1FEh
Char + Palette Attrib. (Basic parallel mode)
Mouse font code (high) + foreground color
Horizontal Shift (high) + Row Char. Count
Next buffer start addr. (high) + Row mode
Mouse pointer horizontal position (high)
Mouse pointer horizontal position (low)
Mouse pointer vertical position (high)
Char + Palette Attrib. + Shape Attrib.
00h to 4F, 6Fh or 8Fh depending on
Mouse pointer vertical position (low)
First buffer start address (high)
Extended Background Palette
First buffer start address (low)
Extended Foreground Palette
GENERAL FEATURES
Next buffer start addr. (low)
Underline color set 2 (high)
Underline color set 1 (high)
Underline color set 2 (low)
Underline color set 1 (low)
Basic Background Palette
Basic Foreground Palette
(Extended parallel mode)
color palettes configured
Mouse font code (low)
Horizontal Shift (low)
Char (serial mode)
ROW BUFFER
Event line (high)
Event line (low)
Row Attributes
Active Range
Active Range
Free for user
Free for user