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324 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 Comment13 11 10 9 30 29
001000Input: 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
Section 7.2.1.3 "Capture Video Mode", Weave
subsection on page 318).
• CRT/TFT and TV Display.
— Can be used to support simultaneous operation.
100000Input: 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
Section 7.2.1.3 "Capture Video Mode", Weave
subsection on page 318).
• CRT/TFT and TV Display.
— Can be used to support simultaneous operation.
010101Input: 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.
010000Input: 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.
001000Input: 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
Section 7.2.2.5 "2-Tap Vertical and Horizontal
Upscalers" on page 322).
• 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].