CX25870/871
Appendix A Scaling and I/0 Timing Register Calculations
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)
Controller Pixels
Total
Encoder Pixels
Overscan (Percent)
Active
Total
H_CLKI
V_LINESI
V_ACTIVEO
H_CLKO
Horizontal
Vertical
Resolution
798
763
800
805
760
805
805
805
756
756
805
810
755
805
756
575
600
588
630
630
615
600
645
650
625
585
630
630
570
600
220
210
215
200
200
205
210
196
194
202
216
200
200
222
210
874
872
896
966
912
943
920
989
936
900
897
972
906
874
864
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
9.47
2.15
–2.17
2.26
13.58
11.52
17.70
17.70
15.64
13.58
19.34
20.16
16.87
11.11
17.70
17.70
8.64
2.34
–2.40
2.44
2.45
2.55
–2.69
–2.70
2.77
2.83
–2.96
2.97
13.58
–2.99
100381B
Conexant
A-13
CONEXANT [ CONEXANT SYSTEMS, INC ]
