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EL4581CN Datasheet(PDF) 5 Page - Intersil Corporation |
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EL4581CN Datasheet(HTML) 5 Page - Intersil Corporation |
5 / 10 page 5 FN7172.2 November 12, 2010 Timing Diagrams NOTES: 9. The composite sync output reproduces all the video input sync pulses, with a propagation delay. 10. Vertical sync leading edge is coincident with the first vertical serration pulse leading edge, with a propagation delay. 11. Odd-even output is low for even field, and high for odd field. 12. Back porch goes low for a fixed pulse width on the trailing edge of video input sync pulses. Note that for serration pulses during vertical, the back porch starts on the rising edge of the serration pulse (with propagation delay). FIGURE 10. START OF FIELD ONE PRE-EQUALIZING PULSE INTERVAL H SYNC INTERVAL PULSE INTERVAL POST-EQUALIZING REF SUBCARRIER PHASE, COLOR FIELD ONE TIME 1.5µs±230µs T1 FIELD ONE +H -0 1271µs+63.5µs -0µs ) ( (*SEE NOTE) SEE FIG 4 SEE FIG 2, 3 VERTICAL BLANKING INTERVAL = 20H 3H 3H 3H 1 2 3 4 5 6 7 8 9 10 19 20 21 H H VERTICAL SYNC PULSE INTERVAL 9 LINE VERTICAL INTERVAL H 0.5H H SIGNAL 1b. COMPOSITE SYNC OUTPUT, PIN 1 SIGNAL 1c. VERTICAL SYNC OUTPUT, PIN 3 SIGNAL 1d. ODD-EVEN OUTPUT, PIN 7 SIGNAL 1e. BACK PORCH OUTPUT, PIN 5 SIGNAL 1a. COMPOSITE VIDEO INPUT, FIELD ONE EL4581 |
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