472 AMD Geodeā„¢ LX Processors Data Book
Video Input Port
33234H
.
Figure 6-46. BT.601 Mode Programmable Field DetectionFigure 6-47. BT.601 Mode Horizontal Timing
HSYNC
VSYNC
odd_field_detect_start field_detect_duration
ACTIVE LOW HSYNC/VSYNC (HSYNC Polarity = 0 / VSYNC Polarity = 0)
ACTIVE HIGH HSYNC/VSYNC (HSYNC Polarity = 1 / VSYNC Polarity = 1)
VSYNC
(for odd field)
(for even field) even field
odd field
line #1
HSYNC
VSYNC
odd_field_detect_start field_detect_duration
VSYNC
(for odd field)
(for even field) even field
odd field
line #1
A = 3 B = 12
A - horizontal_start for 601 (VIP Memory Offset 3Ch)
CLK
HSYNC
B - horizontal_end for 601 (VIP Memory Offset 38h)
video data
* Clock #1 occurs at leading transition of HSYNC
2
1* 3
D2 D3 D4 D5 D6
4
D1
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