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GS1522

Description
hdtv serial digital serializer
File Size403KB,20 Pages
ManufacturerGennum ( Semtech )
Websitehttp://www.gennum.com
Download Datasheet View All

GS1522 Overview

hdtv serial digital serializer

HD-LINX
GS1522
HDTV Serial Digital Serializer
PRELIMINARY DATA SHEET
FEATURES
• SMPTE 292M compliant
• 20:1 parallel to serial conversion
• NRZ(I) encoder & SMPTE scrambler with selectable
bypass
• NRZ to NRZ(I) serial data conversion
• 1.485Gb/s and 1.485/1.001Gb/s operation
• lock detect output
• selectable DUAL or QUAD 75Ω cable driver outputs
• 8 bit or 10 bit input data support
• 20 bit wide inputs
• 3.3V and 5V CMOS/TTL compatible inputs
• single +5.0V power supply
APPLICATIONS
SMPTE 292M Serial Digital Interfaces for Video Cameras,
Camcorders, VTR's, Signal Generators, Portable Equip-
ment, and NLE's.
ORDERING INFORMATION
PART NUMBER
GS1522-CQR
PACKAGE
128 pin MQFP
TEMPERATURE
0°C to 70°C
DESCRIPTION
The GS1522 is a monolithic bipolar integrated circuit
designed to serialize SMPTE 274M and SMPTE 260M bit
parallel digital signals.
This device performs the following functions:
Sync word mapping for 8-bit/10-bit operation.
Parallel to Serial conversion of Luma & Chroma data
Interleaving of Luma and Chroma data
Data Scrambling (using the X +X +1 algorithm)
Conversion of NRZ to NRZI serial data (using the (X+1)
algorithm)
Selectable DUAL or QUAD 75Ω Cable Driver outputs
Lock Detect Output
1.485Gb/s or 1.485/1.001Gb/s operation
9
4
GS1522
This device requires a single 5V supply and typically
consumes less than 1000mW of power while driving two
75Ω cables.
The GS1522 uses the GO1515 external VCO connected to
the internal PLL circuitry to achieve ultra low noise PLL
performance.
RESET BYPASS
R
SET0
SYNC_DETECT
_DISABLE
20
DATA_IN[19:0]
20
INPUT
LATCH
SYNC DETECT
SMPTE
SCRAMBLER
INTERLEAVER
O/P0
RESET
BYPASS
S
CLK
PARALLEL
TO SERIAL
CONVERTER
NRZ TO NRZI
O/P1
SDO1-
P
LOAD
MUTE
R
SET1
SDO1_EN
PLL_LOCK
SDO1+
SDO0-
SDO0+
PCLK_IN
PLL
GO1515
FUNCTIONAL BLOCK DIAGRAM
Revision Date: August 2000
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3
Tel. +1 (905) 632-2996 Fax. +1 (905) 632-5946 E-mail: info@gennum.com
www.gennum.com
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