3

Pin Descriptions

PIN NUMBER

PIN NAME

FUNCTION

1

Composite Sync Out

Composite sync pulse output. Sync pulses start on a falling edge and end on a rising edge.

2

Composite Video in

AC coupled composite video input. Sync tip must be at the lowest potential (Positive picture phase).

3

Vertical Sync Out

Vertical sync pulse output. The falling edge of Vert Sync is the start of the vertical period.

4

GND

Supply ground.

5

Burst/Back Porch Output

Burst/Back porch output. Low during burst portion of composite video.

An external resistor to ground sets all internal timing. 681k, 1% resistor will provide correct timing

for NTSC signals.

7

Odd/Even Output

Odd/Even field output. Low during odd fields, high during even fields. Transitions occur at start of

Vert Sync pulse.

Positive supply. (5V)

EL4581