L64767 LSI Logic Corporation, L64767 Datasheet

L64767

Manufacturer Part Number

L64767

Description

Smatv Qam Encoder

Manufacturer

LSI Logic Corporation

Datasheet

1.L64767.pdf (32 pages)

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L64767

SMATV QAM Encoder

Datasheet

Introduction

Figure 1. L64767 SMATV QAM System

QPSK Satellite Receiver

MPEG-2 Transport

Transmission

LSI Logic

Network

L64704

MUX

LSI Logic’s L64767 SMATV QAM Encoder is a highly-integrated device

designed speciﬁcally for Satellite Master Antenna Television (SMATV)

applications. The L64767 is ideally suited to any application that requires

a low-power, highly integrated forward error correction (FEC)

transmission encoder. Typical applications include rooftop SMATV

systems, cable head-ends, and optical networks in ﬁber-deep networks.

Figure 1

device can process input from either an MPEG-2 transport encoder, a

satellite receiver, or a transmission network.

The L64767 simpliﬁes the design process for FEC and modulation

encoding systems by providing built-in signal processing capabilities and

a byte-parallel, power saving architecture. The L64767’s ease of use will

help system engineers create the next generation of time-to-volume

sensitive digital products. In contrast, previous solutions for these

systems forced system engineers to use many programmable and

discrete devices on large circuit boards. These end products were

expensive and power-intensive, both of which are unacceptable for

today’s SMATV applications.

April 1999

shows a basic SMATV QAM system using the L64767. The

L64767

PLL

D/A

Passive

Filter

Analog

Mod

Cable

Plant

MD97.1

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