cx25870 Conexant Systems, Inc., cx25870 Datasheet - Page 209
cx25870
Manufacturer Part Number
cx25870
Description
Video Encoder With Adaptive Flicker Filtering And Hdtv Output
Manufacturer
Conexant Systems, Inc.
Datasheet
1.CX25870.pdf
(291 pages)
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CX25870/871
Flicker-Free Video Encoder with Ultrascale Technology
Table A-13. Overscan Values 800 x 600 NTSC, Pixel-Based Controller, 1-Pixel Resolution, 3:2 Clocking Mode (1 of 4)
100381B
H_CLKI
1170
1170
1170
1176
1176
1175
1175
1155
1155
1155
1185
1155
1190
1155
1155
1150
1190
1155
1190
1150
1197
1197
1197
1200
1200
1197
1200
1200
1200
1140
Controller Pixels
Total
V_LINESI
770
735
805
750
825
756
819
795
810
735
735
825
765
780
765
819
810
750
720
756
800
750
775
777
798
725
756
714
735
735
V_ACTIVEO
Active
205
215
196
210
191
209
193
199
195
215
215
191
206
202
206
193
195
210
219
209
197
210
204
203
198
218
209
221
215
215
Encoder Pixels
Conexant
H_CLKO
Total
1144
1092
1196
1120
1232
1128
1222
1166
1188
1078
1106
1210
1156
1144
1122
1196
1224
1100
1088
1104
1216
1140
1178
1184
1216
1102
1152
1088
1120
1064
Appendix A Scaling and I/0 Timing Register Calculations
Horizontal
15.59
11.57
19.26
13.79
21.62
14.40
20.98
17.19
18.72
10.43
12.69
20.20
16.47
15.59
13.94
19.26
21.11
12.22
11.25
12.54
20.59
15.30
18.03
18.45
20.59
12.38
16.18
11.25
13.79
9.25
Overscan (Percent)
Vertical
15.64
11.52
19.34
13.58
21.40
13.99
20.58
18.11
19.75
11.52
11.52
21.40
15.23
16.87
15.23
20.58
19.75
13.58
13.99
18.93
13.58
16.05
16.46
18.52
10.29
13.99
11.52
11.52
9.88
9.05
Delta
–
–
–
–
–
–
–
–
–
–
–
–
0.05
0.21
0.22
0.40
0.41
1.17
1.24
1.36
1.37
1.66
1.72
1.98
1.98
2.07
2.09
2.19
2.20
2.26
0.04
0.08
0.92
1.03
1.10
1.20
1.28
1.29
1.31
1.36
1.46
2.27
A-27
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