
344
AMD Geode SC1200/SC1201 Processor Data Book
Video Processor Module
Revision 7.1
The video data can be in progressive or interlaced format,
while the graphics data is always in the progressive format.
The Mixer/Blender can mix/blend either format of video
data with graphics data. F4BAR0+Memory Offset 4Ch[9]
programs the mix/blend format. Considering the color
space and the data format, the Mixer/Blender supports five
types of mixing/blending. Some of the mixing/blending
types have additional programming considerations to
enable them to work optimally. The valid mixing/blending
configurations are listed in see
Table 7-2 along with any
additional programming requirements.
Table 7-2. Valid Mixing/Blending Configurations
Mixing/Blending1
(Bit)
Flicker
Filter2 (Bit)
Mode
Comment
13
11
10
9
30
29
001000
Input: YUV Progressive Video
Mixing: RGB
Flicker Filter: , ,
TV Display – Supported but not recommended.
— Two color space conversions are required.
— Non-optimal operation of the flicker filter.
CRT/TFT Display.
— Produces highest quality RGB output (see
CRT/TFT and TV Display.
— Can be used to support simultaneous operation.
100000
Input: RGB Progressive Video
Mixing: RGB
Flicker Filter: , ,
TV Display – Supported but not recommended.
— Non-optimal operation of the flicker filter.
CRT/TFT Display.
— Produces highest quality RGB output (see
CRT/TFT and TV Display.
— Can be used to support simultaneous operation.
010101
Input: YUV Interlaced Video
Mixing: YUV
Flicker Filter: , 1,
TV Display – Supported and recommended.
— Produces the highest quality TV output.
— No video data color space conversions are
required
— Optimally uses the flicker filter.
CRT/TFT Display - Not supported.
010000
Input: YUV Progressive Video
Mixing: YUV
Flicker Filter: , ,
TV Display – Supported but not recommended.
— Non-optimal operation of the filter flicker
CRT/TFT Display - Not supported.
001000
Input: YUV Interlaced Video
upscaled by 2
Mixing: RGB
Flicker Filter: , ,
Typically Direct Video mode.
TV Display – Supported but not recommended.
— Two color space conversions are required.
— Non-optimal operation of the filter flicker
CRT/TFT Display.
— Must be vertically upscaled by a factor of 2 (see
CRT/TFT and TV Display.
— Can be used to support simultaneous operation.
1.
F4BAR0+Memory Offset 4Ch[13, 11:9].
2.
F4BAR0+Memory Offset 814h[30:29].