cx25870 Conexant Systems, Inc., cx25870 Datasheet - Page 195

• Manufacturer Part Number: cx25870
• Description: Video Encoder With Adaptive Flicker Filtering And Hdtv Output
• Manufacturer: Conexant Systems, Inc.

CX25870/871
Flicker-Free Video Encoder with Ultrascale Technology
Table A-4. Overscan Values, 640 x 480 NTSC, Pixel-Based Controller, 1-Pixel Resolution, 2.5 µs HBlank (2 of 2)
100381B
H_CLKI
798
763
800
805
760
805
805
805
756
756
805
810
755
805
756
Controller Pixels
Total
V_LINESI
575
600
588
630
630
615
600
645
650
625
585
630
630
570
600
V_ACTIVEO
Active
220
210
215
200
200
205
210
196
194
202
216
200
200
222
210
Encoder Pixels
Conexant
H_CLKO
Total
874
872
896
966
912
943
920
989
936
900
897
972
906
874
864
Appendix A Scaling and I/0 Timing Register Calculations
Horizontal
11.62
11.41
13.79
20.03
15.30
18.08
16.03
21.89
17.47
14.17
13.88
20.53
14.74
11.62
10.59
Overscan (Percent)
Vertical
13.58
11.52
17.70
17.70
15.64
13.58
19.34
20.16
16.87
11.11
17.70
17.70
13.58
9.47
8.64
Resolution
–2.17
–2.40
–2.69
–2.70
–2.96
–2.99
2.15
2.26
2.34
2.44
2.45
2.55
2.77
2.83
2.97
A-13