CX25870 Datasheet, PDF (192/291 Pages) Conexant Systems, Inc – Video Encoder with Adaptive Flicker Filtering and HDTV Output

Appendix A Scaling and I/0 Timing Register Calculations
CX25870/871
Flicker-Free Video Encoder with Ultrascale Technology
Figure A-7. Allowable Overscan Compensation Ratios for Dual Display, 1024x768 Input, NTSC Output
22
20
18 4 us
16
14
3 us
12
10
2 us 1.75 us 1.5 us 1 us Horizontal Blanking
8
8
10
12
14
16
18
LEGEND
= Pixel Clock Solution
= 8-Cycle Character Clock Solution
= 9-Cycle Character Clock Solution
Vertical Overscan Compensation Percentage
NOTE(S):
Use this chart for PAL-M and PAL-60 allowable overscan ratios.
0 us
20
22
100381_063
A-10
Conexant
100381B