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