cx25870 Conexant Systems, Inc., cx25870 Datasheet - Page 187

• 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
Figure A-2. Allowable Overscan Compensation Ratios for Dual Display, 640x480 Input, PAL-BDGHI Output with 20 Clock
HBlank Period
100381B
NOTE(S):
Use this chart for SECAM, PAL-N, and PAL-Nc allowable overscan compensation ratios.
Legend:
= Pixel Clock Solution
= 8-Cycle Character Clock Solution
= 9-Cycle Character Clock Solution
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22
20
18
16
14
12
10
8
8
10
Overscan Compensation Pecentage Pairs for 640x480 PAL
12
Vertical Overscan Compensation Percentage
Conexant
14
Appendix A Scaling and I/0 Timing Register Calculations
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18
20
22
100381_027
A-5