ST92196A STMicroelectronics, ST92196A Datasheet - Page 131

• 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)
8.5.6 Programming the Color Palettes
The Palette attributes are coded inside the two
Palettes (Basic background and foreground, and
Extended background and foreground); they are
therefore accessible in all modes, parallel as well
as serial.
A palette contains 16 colors each defined with a
16-bit word. For each color, you can define the red
level (1 of 8 values), the green level (1 value
among 8), the blue level (1 value among 8), and
the translucency level (1 value among 8).
131/268
- ON SCREEN DISPLAY CONTROLLER (OSD)
The color palettes also bring improvements in un-
derline control to allow for “Windows-like” buttons.
Once programmed, color palettes can be changed
in real-time when the OSD is running, that is to say
when the software is filling one row buffer while the
other one is displayed (but take care that the row
currently displayed may be using some of the
colors which you want to modify).