AMD SC1201 User Manual

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AMD Geode™ SC1200/SC1201 Processor Data Book
Video Processor Module
32579B
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/Blending
1
(Bit)
Flicker 
Filter
2
 (Bit)
Mode
Comment
13
11
10
9
30
29
0
0
1
0
0
0
Input: YUV Progressive Video
Mixing: RGB
Flicker Filter: ¼, ½, ¼
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.
1
0
0
0
0
0
Input: RGB Progressive Video
Mixing: RGB
Flicker Filter: ¼, ½, ¼
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.
0
1
0
1
0
1
Input: YUV Interlaced Video
Mixing: YUV
Flicker Filter: ½, 1, ½
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. 
0
1
0
0
0
0
Input: YUV Progressive Video
Mixing: YUV
Flicker Filter: ¼, ½, ¼
TV Display – Supported but not recommended.
— Non-optimal operation of the filter flicker 
CRT/TFT Display - Not supported.
0
0
1
0
0
0
Input: YUV Interlaced Video 
upscaled by 2
Mixing: RGB
Flicker Filter: ¼, ½, ¼
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].