Datasheet > MC92305

MC92305

更新时间： 2024-09-24 22:46:19

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		解码器
页数	文件大小	规格书
4页	42K
描述
16/32/64/128/256 QAM RECEIVER AND REED-SOLOMON DECODER

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中文翻译

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数据手册

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MC92305 数据手册

Current Information @ www.mot.com/ADC

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

MC92305

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AGCOUT

ADCLKOUT

VCOOUT

RESETB

I&Q[9:0]

16/32/64/128/256 QAM RECEIVER AND

REED-SOLOMON DECODER

IQSWAP

ADCLKIN

CTLOUT

DMODLOCK

MSSLOCK

SYMFE

SDATA

IN_FMT

SCLK

The MC92305 is a high performance digital demodulator/decoder optimized for

demodulation and block error correction of QAM signals used in Digital Video Broad-

cast by Cable (DVB-C) and DAVIC 1.0 compliant applications.

DOUT[7:0]

DO_VAL

FRAME_SYNCH

Feature Summary

BITCLK

FRAME_ERR

FRAME_START

•

Single A/D IF interface

Maximum signaling rate of 7Mbaud (42Mbits/sec for 64 QAM and

56Mbits/sec for 256 QAM)

DVB compliant QAM Coherent Demodulator

Transversal/Decision Feedback adaptive equalizer

No external components or control required

Micro-reflection cancellation up to 1.4µs

Ordering Information

•

Device

Package

•

MC92305CD

80QFP

Nyquist baseband filtering (α=0.15)

1-bit Σ∆ control outputs for AGC, VCO and optional external NCO

Programmable De-Interleaving For MPEG Transport Packets

DVB Compliant (204,188,16) Reed Solomon Decoding

DVB Compliant PRBS Descrambling

0.5 micron CMOS, 3.3V technology

I C Interface for control/monitoring of system

FRAME_SYNCH

DOUT

I &Q

SYMFE

Symbol

To Byte

Mapping

PRBS

Descrambler

Synch Word

Synchronization

RESETB

IN_FMT

16/32/64/128/256

QAM DEMOD.

ADCLKOUT

CTLOUT

VCOOUT

Reed-Solomon

Decoder

FRAME_START

FRAME_ERR

AGCOUT

Programmable

De-Interleaver

MSSLOCK

DMODLOCK

ADCLKIN

RAM

DO_VAL

SCLK

SDATA

I²C Interface

APLL

BITCLK

Figure 1. MC92305 Block Diagram

This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.

MOTOROLA, INC. 1997

4/9/97

12 3 4

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