Table 6-36. Video Bandwidth - AMD Geode LX 600@0.7W Data Book

33234H
6.5.1.9 Video Overlay Support
The GUI block also supports a video overlay function. The
DC has flexible addressing capability for YUV 4:2:2 and
YUV 4:2:0 display surfaces. Video data is stored in a sepa-
rate buffer within the off-screen frame buffer. Independent
surface pitch control is provided for Y and U/V.
The DC fetches the contents of the video and transmits it to
the Video Processor once per frame.
Resolution
640x480
800x600
1024x768
1280x1024
1600x1200
286

Table 6-36. Video Bandwidth

Line Rate
Refresh Rate (Hz)
60
85
60
85
60
85
60
85
60
70
The Video Processor provides enhanced overlay scaling
and filtering options.
The width of the video output port is 32 bits. This allows the
display of high-resolution video source material (up to 1920
horizontal pixels) mixed with high-resolution graphics data.
Table 6-36 illustrates the minimum video port bandwidth
required for a number of different graphics display resolu-
tions.
Video Source
(KHz) Size (B)
31.5 1440
2160
43.3 1440
2160
37.9 1440
2160
53.7 1440
2160
48.4 1440
2160
68.7 1440
2160
64.0 1440
2160
91.1 1440
2160
75.0 1440
2160
87.5 1440
2160
Display Controller
Video Port Bandwidth
Required (MB/s)
45.4
68.0
62.4
93.5
54.5
81.9
77.3
116.0
69.7
105
98.9
148.4
92.2
138
131
197
108
162
126
189
AMD Geode™ LX Processors Data Book