cx25870 Conexant Systems, Inc., cx25870 Datasheet - Page 215

• 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-15. Overscan Values 800 x 600 NTSC, Character Clocked-Based Controller, 9-Pixel Resolution, 3:2 Clocking
Mode (2 of 2)
100381B
H_CLKI
1260
1260
1260
1260
1260
1260
1260
1080
1071
1071
1305
1323
1350
1350
Controller Pixels
Total
V_LINESI
760
730
745
720
735
725
715
805
825
800
735
725
721
714
V_ACTIVEO
Active
208
216
212
219
215
218
221
196
191
197
215
218
219
221
Encoder Pixels
Conexant
H_CLKO
Total
1216
1168
1192
1152
1176
1160
1144
1104
1122
1088
1218
1218
1236
1224
Appendix A Scaling and I/0 Timing Register Calculations
Horizontal
20.59
17.33
18.99
16.18
17.89
16.76
15.59
12.54
13.94
11.25
20.72
20.72
21.88
21.11
Overscan (Percent)
Vertical
14.40
11.11
12.76
11.52
10.29
19.34
21.40
18.93
11.52
10.29
9.88
9.05
9.88
9.05
Delta
–
–
–
10.43
12.00
12.06
6.19
6.22
6.24
6.30
6.37
6.47
6.54
9.20
6.81
7.46
7.68
A-33