SC1200UCL-266 AMD (ADVANCED MICRO DEVICES), SC1200UCL-266 Datasheet - Page 329

• Manufacturer Part Number: SC1200UCL-266
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of SC1200UCL-266

• Lead Free Status / Rohs Status: Not Compliant

Video Processor Module
7.2.4
The TVOUT block provides a full-featured TV output signal.
NTSC TV and PAL TV formats are both supported. A YUV
progressive scan image is delivered to the TVOUT block
from the Mixer/Blender block. Integrated horizontal scaling,
flicker filtering, scan rate conversion, and TV encoder pro-
duce a high quality TV output. See TVOUT block diagram,
Figure 7-13.
7.2.4.1
The flicker filter uses a 3-line moving window buffer, and
has fixed coefficients. The maximum line width is 768 pix-
els. F4BAR0+Memory Offset 814h[30:29] enables the
flicker filter’s two operating modes: Flicker filter interlaced
video data and flicker filter progressive video data.
AMD Geode™ SC1200/SC1201 Processor Data Book
Graphics Y(n-1) * ½ = ½ GY(n-1)
Graphics Y(n) * ½ = ½ GY(n)
Graphics Y(n+1) * ½ = ½ GY(n+1)
YUV Image from
½ Y Flicker Filter - Graphics Pixel
Mixer/Blender
TVOUT Block
Flicker Filter and Scan Rate Conversion
Mixer/Blender Block
3-Line Moving Window
Buffer
Figure 7-13. TVOUT Block Diagram
Table 7-4. Flicker Filter Operation
½ GY * ½ =
½ GY * 1 =
½ GY * ½ =
Progressive Scan to
Timing Generator
Interlace Scan
----------------
1 GY pixel
Flicker Filter
TV Encoder
Graphics Pixel
Converter
Flicker Filter, Interlaced Video and
YUV Mixing/Blending Mode
This is the recommended mode. With this mode only the
graphics data is flicker filtered. Interlaced video and YUV
blending must be the Mixer/Blender block’s mode (see Sec-
tion 7.2.3 "Mixer/Blender Block" on page 323). In this
mode, the Mixer/Blender block supports the flicker filter
process (see Figure 7-10 on page 323). Then the mixed/
blended data is flicker filtered using the formula shown in
Table 7-4. Using the ½, 1, ½ coefficients the graphics data
is pre-divided by 2 in the Mixer/Blender block. The video
data is interlaced so the previous and next line of the video
data stream is null. Therefore when the coefficients are
applied to the mixed data, the graphics data is modified
and the video data is not.
¼ GY(n-1)
½ GY(n)
¼ GY(n+1)
Flicker Filter ½, 1, ½ Coefficients
Video Y (m-1)
Null * ½ =
Video Y (m) * 1= VY(m)
Null * ½ =
Video Y (m+1)
Pre-Encoder
Horizontal
Encoder
Encoder
Scaler
VESA
32579B
TV
Video Pixel
Video Output Port
TV DACs
0
0
--------------
1 VY pixel
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