Main modules:

Supply module

• 30W
• 240v/120V switchable
• Analog supply symmetric +5/-5V, 2A
• Digital supply 5V, 2A
• short circuit protected

Sync-Stripper

• Built around the LM1881, separates
• Analog-Inputs: Video in (composite)
• Analog Outputs: Sync Signal, Image Signal
• Digital Outputs: All lm1881 signals

Generates two video signals: Sync Signal where all image is replaced by black level. Image Signal: all sync pulses replaced by black level.

Re-syncer

Combines the “dirty” image again with the original sync signal.

Bus

1. sync signal (black picture)
2. color carrier
3. spare
4. spare
5. +5V analog
6. -5V analog
7. analog gnd
8. digital gnd
9. +5V digital
10. composite-sync
11. vertical sync
12. burst/back porch
13. odd/even
14. spare
15. spare
16. spare

Links

• http://www.maxim-ic.com/app-notes/index.mvp/id/734
• http://en.wikipedia.org/wiki/PAL