4

FN7442.5

August 9, 2006

Pin Descriptions

PIN NUMBER

PIN NAME

PIN 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

5HD

Low when input horizontal frequency is greater than 20kHz

6

CSET

(An external capacitor to ground); bypass pin for internal bias generator.

7

HORIZONTAL

OUTPUT

Horizontal output; falling edge active

8

VDD

Positive supply

Typical Performance Curves

FIGURE 4. MACROVISION COMPATIBILITY (NTSC)

0.5V/DIV

5V/DIV

5V/DIV

5V/DIV

HSYNC

VSYNC

CSYNC

VIN

100

µs/DIV

ISL59885