cx25870 Conexant Systems, Inc., cx25870 Datasheet - Page 203

• 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-10. Overscan Values, 800 x 600 NTSC, Pixel-Based Controller, 1-Pixel Resolution (1 of 4)
100381B
H_CLKI
800
800
800
800
800
800
805
805
805
805
805
805
805
805
810
810
812
810
819
815
819
819
825
819
825
820
825
825
825
826
825
Controller Pixels
Total
V_LINESI
777
819
798
756
714
735
825
780
750
765
810
720
795
735
805
770
750
735
800
735
750
775
805
725
784
735
777
798
770
750
791
V_ACTIVEO
Active
203
193
198
209
221
215
191
202
210
206
195
219
199
215
196
205
210
215
197
215
210
204
196
218
201
215
203
198
205
210
200
Encoder Pixels
H_CLKO
Total
1184
1248
1216
1152
1088
1120
1265
1196
1150
1173
1242
1104
1219
1127
1242
1188
1160
1134
1248
1141
1170
1209
1265
1131
1232
1148
1221
1254
1210
1180
1243
Conexant
Appendix A Scaling and I/0 Timing Register Calculations
Horizontal
18.45
22.63
20.59
16.18
11.25
13.79
23.67
19.26
16.03
17.68
22.25
12.54
20.79
14.32
22.25
18.72
16.76
14.85
22.63
15.37
17.47
20.13
23.67
14.62
21.62
15.89
20.92
23.00
20.20
18.17
22.32
Overscan (Percent)
Vertical
16.46
20.58
18.52
13.99
11.52
21.40
16.87
13.58
15.23
19.75
18.11
11.52
19.34
15.64
13.58
11.52
18.93
11.52
13.58
16.05
19.34
10.29
17.28
11.52
16.46
18.52
15.64
13.58
17.70
9.05
9.88
Resolution
1.98
2.05
2.07
2.19
2.20
2.26
2.27
2.39
2.45
2.45
2.50
2.66
2.68
2.80
2.91
3.08
3.18
3.33
3.70
3.85
3.89
4.08
4.33
4.34
4.34
4.37
4.46
4.48
4.56
4.59
4.62
A-21