參數(shù)資料
型號: MC92305CD
廠商: Motorola, Inc.
英文描述: 16/32/64/128/256 QAM RECEIVER AND REED-SOLOMON DECODER
中文描述: 16/32/64/128/256的QAM接收器和Reed - Solomon解碼器
文件頁數(shù): 1/4頁
文件大?。?/td> 39K
代理商: MC92305CD
Current Information @ www.mot.com/ADC
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
MOTOROLA, INC. 1997
4/9/97
Product Preview
16/32/64/128/256 QAM RECEIVER AND
REED-SOLOMON DECODER
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.
Feature Summary
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 1.4
μ
s
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
2
C Interface for control/monitoring of system
RESETB
I&Q[9:0]
IQSWAP
ADCLKOUT
DOUT[7:0]
SDATA
IN_FMT
SCLK
AGCOUT
Figure 1. MC92305 Block Diagram
MC92305
Ordering Information
Device
MC92305CD
Package
80QFP
10
I &Q
DOUT
VCOOUT
ADCLKIN
DMODLOCK
SYMFE
MSSLOCK
CTLOUT
16/32/64/128/256
QAM DEMOD.
Symbol
To Byte
Mapping
Synch Word
Synchronization
Programmable
De-Interleaver
Reed-Solomon
Decoder
PRBS
Descrambler
I
2
C Interface
ADCLKOUT
CTLOUT
VCOOUT
AGCOUT
MSSLOCK
DMODLOCK
ADCLKIN
8
FRAME_START
FRAME_ERR
FRAME_SYNCH
DO_VAL
SCLK
SDATA
SYMFE
RESETB
IN_FMT
FRAME_SYNCH
FRAME_START
FRAME_ERR
DO_VAL
RAM
APLL
BITCLK
BITCLK
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.
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