GS1578A Data Sheet

33657 - 4

March 2006

3 of 15

1. Pin Out

1.1 Pin Assignment

Figure 1-1: 16-Pin QFN

1.2 Pin Descriptions

GS1578A

(top view)

1

SDI

SDI

2

3

4

SDO

SDO

VCC

12

11

10

9

5

7

68

13

14

15

16

Center Pad

(bottom of package)

RSET

SD / HD

Table 1-1: Pin Descriptions

Pin Number

Name

Timing

Type

Description

1,2

SDI, SDI

Analog

Input

Serial digital differential input.

–

Power

Most negative power supply connection. Connect to GND.

Analog

Input

External output amplitude control resistor.

5,6,7,8,13,14,

15,16

NC

–

–

No Connect. Not bonded internally.

–

Power

Most positive power supply connection. Connect to +3.3V.

10

SD/HD

Non

Synchronous

Input

Output slew rate control. When set HIGH, the output will meet

SMPTE 259M rise/fall time specifications. When set LOW, the

serial outputs will meet SMPTE 292M rise/fall time

specifications.

11,12

SDO, SDO

Analog

Output

Serial digital differential output.

–

Center Pad

–

Power

Connect to most negative power supply plane following the

recommendations in Recommended PCB Footprint on

page 14.