ST92196A STMicroelectronics, ST92196A Datasheet - Page 126
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ST92196A
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
Datasheet
1.ST92196A.pdf
(268 pages)
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OSD CONTROLLER (Cont’d)
8.5.5.2 Row Buffer Description
The start address for each buffer must be even.
Starting from address 2p+6, write a string corre-
sponding to the character codes and the possible
attributes as in the example below:
8.5.5.3 OSDRAM Mapping Example 1
The left column of
OSDRAM mapping for the following configuration:
– The display uses basic parallel mode
– Only the two basic color palettes are used
– 36 characters are displayed per row
– The First Buffer Start Address (to be stored in
– The Next Buffer Start Address to be stored in
1
2
3
4
5
6
...
Byte
0002h and 0003h) is 0050h
buffer 1 (address 0050h and 0051h) is 409Eh
(009Eh is the address of buffer 2, and 40h is the
code for basic parallel mode. Refer to
8.5.8.1).
Char or Attrib1
Char or Attrib2
Char or Attrib3
Char or Attrib4
Char or Attrib5
Char or Attrib6
...
Serial Mode
Figure 60
Char1
PaletteAttrib1
Char2
PaletteAttrib2
Char3
PaletteAttrib3
...
Parallel Mode
Basic
gives an example of
Char1
PaletteAttrib1
ShapeAttrib1
Char2
PaletteAttrib2
ShapeAttrib2
...
Parallel Mode
Extended
Section
- ON SCREEN DISPLAY CONTROLLER (OSD)
– The Next Buffer Start Address to be stored in
8.5.5.4 OSDRAM Mapping Example 2
The right column of
OSDRAM mapping for the following configuration:
– The display uses extended parallel mode
– The four color palettes are used
– 36 characters are displayed per row
– The First Buffer Start Address (to be stored in
– The Next Buffer Start Address to be stored in
– The Next Buffer Start Address to be stored in
Note: To keep some OSDRAM locations free,
configure only those features that you really use
(color palettes, underline palettes and mouse
pointer data), as shown in the two examples.
buffer 2 (address 009Eh and 009Fh) is 4050h
(0050h is the address of buffer 1, and 40h is the
code for basic parallel mode. Refer to
8.5.8.1
0002h and 0003h) is 0090h
buffer 1 (address 0090h and 0091h) is 8102h
(0102h is the address of buffer 2, and 80h is the
code for extended parallel mode. Refer to
tion 8.5.8.1
buffer 2 (address 0102h and 0103h) is 8090h
(0090h is the address of buffer 1, and 80h is the
code for extended parallel mode. Refer to
tion 8.5.8.1
for more details).
for more details).
for more details).
Figure 60
gives an example of
Section
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