cx25870 Conexant Systems, Inc., cx25870 Datasheet - Page 216
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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Appendix A Scaling and I/0 Timing Register Calculations
Table A-16. Overscan Values, 800 x 600 PAL-BDGHI, Pixel-Based Controller, 1-Pixel Resolution, >2.5 µs HBlank (1 of 2)
A-34
H_CLKI
945
950
950
940
950
950
950
955
935
960
930
925
925
965
925
925
970
920
975
975
975
915
975
980
910
985
900
905
900
990
900
Controller Pixels
Total
V_LINESI
750
750
775
750
725
800
825
750
750
750
750
825
800
750
775
750
750
750
775
750
800
750
725
750
750
750
825
750
800
750
775
V_ACTIVEO
Active
250
250
242
250
259
235
228
250
250
250
250
228
235
250
242
250
250
250
242
250
235
250
259
250
250
250
228
250
235
250
242
Encoder Pixels
Conexant
H_CLKO
Total
1134
1140
1178
1128
1102
1216
1254
1146
1122
1152
1116
1221
1184
1158
1147
1110
1164
1104
1209
1170
1248
1098
1131
1176
1092
1182
1188
1086
1152
1188
1116
Flicker-Free Video Encoder with Ultrascale Technology
Horizontal
13.17
13.63
16.42
12.71
10.65
19.03
21.48
14.08
12.24
14.53
11.77
19.36
16.84
14.97
14.16
11.30
15.41
10.81
18.56
15.84
21.10
10.33
12.94
16.27
16.70
17.12
14.53
17.12
11.77
9.83
9.34
Overscan (Percent)
Vertical
13.19
13.19
15.97
13.19
10.07
18.40
20.83
13.19
13.19
13.19
13.19
20.83
18.40
13.19
15.97
13.19
13.19
13.19
15.97
13.19
18.40
13.19
10.07
13.19
13.19
13.19
20.83
13.19
18.40
13.19
15.97
CX25870/871
Resolution
–0.02
–0.48
–0.95
–1.42
–1.47
–1.56
–1.81
–1.90
–2.38
–2.87
–3.36
–3.71
–3.86
–3.87
–4.20
0.44
0.44
0.58
0.63
0.65
0.89
1.34
1.78
2.22
2.59
2.65
2.70
2.87
3.08
3.50
3.93
100381B
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