•

automatic cable equalization (typically 300m of high

quality cable at 270Mb/s)

•

fully compatible with SMPTE 259M and operational

to 400 Mb/s

•

adjustment free receiver when used with the

GS9000B or GS9000S decoder and GS9010A

Automatic Tuning Sub-system

•

signal strength indicator

•

selectable cable or direct digital inputs

•

28 pin PLCC packaging

APPLICATIONS

• 4ƒ

Serial Digital Receiver

DATA SHEET

FEATURES

DEVICE DESCRIPTION

The GS9005A is a monolithic IC designed to receive SMPTE

259M serial digital video signals. This device performs the

functions of automatic cable equalization and data and clock

recovery. It interfaces directly with the

GENLINX

or GS9000S decoder, and GS9010A Automatic Tuning

Subsystem.

The VCO centre frequencies are controlled by external resistors

which can be selected by applying a two bit binary code to the

Standards Select input pins.

An additional feature is the Signal Strength Indicator output

which provides a 0.5V to 0V analog output relative to V

CC

indicating the amount of equalization being applied to the

signal.

The GS9005A is packaged in a 28 pin PLCC operating from a

single +5 or -5 volt supply.

Revision Date: August 1997

FUNCTIONAL BLOCK DIAGRAM

ORDERING INFORMATION

PART NUMBER

PACKAGE

TEMPERATURE

GS9005ACPJ

28 Pin PLCC

GS9005ACTJ

28 Pin PLCC Tape

SERIAL DATA

PLL

SERIAL CLOCK

LOOP

FILTER

SS0

SS1

EQUALIZER

CARRIER

DETECT

CABLE

IN

DIGITAL

IN

SIGNAL

STRENGTH

INDICATOR

AGC

CAPACITOR

LOGIC

COMPARATOR

Σ

FILTER

CONTROL

VOLTAGE

VARIABLE

FILTER

DC

RESTORER

DATA

LATCH

PHASE

COMPARATOR

CARRIER

DETECT

CHARGE

PUMP

STANDARD

SELECT

PEAK

DETECTOR

VCO

ANALOG

DIGITAL

SELECT

28

8,9

5,6

19

12

13 14 15 17

20

21

2

1

A/D

SERIAL DATA

SERIAL CLOCK

24

25

22

23

16

OUTPUT 'EYE'

MONITOR

÷2

ƒ/2 ENABLE

10

GS9005A

SPECIAL NOTE: R

VCO1

and R

VCO2

are functional over a

reduced temperature range of T

A

=0

° C to 50° C. R

VCO0

and R

VCO3

are functional over the full temperature range

of T

A

=0

° C to 70° C. This limitation does not affect

operation with the GS9010A ATS.

GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-5946

Gennum Japan Corporation: A-302 Miyamae Village, 2-10-42 Miyamae, Suginami-ku, Tokyo 168, Japan

tel. (03) 3334-7700

fax (03) 3247-8839

Document No. 520 - 28 - 11