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參數(shù)資料
| 型號： | MC92307 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 2K - Samples FFT-Processor |
| 中文描述： | 2K -個采樣的FFT處理器 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 121K |
| 代理商： | MC92307 |
MOTOROLA, INC. 1997
8/12/97
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Current information @www.mot.com.sps/ADC
PeimnayInomaion
RESB
Advance Information
2K - Samples FFT-Processor
The MC92307 is a pipelined Fast Fourier Transformation (FFT) processor with a
blocklength of 2048 complex samples. It is especially designed for use in digital ter-
restrial Set-Top boxes according to the DVB-T standard for 2K transmission. One
block of 2048 complex samples can be processed in 224
μ
s
Feature Summary
Processing of one block of 2048 complex samples (i.e. one 2K-OFDM symbol) in
224
μ
s.
Designed for direct interfacing with Motorola’s OFDM demodulator MC92308.
Overflow on certain OFDM subcarriers due to co-channel interferes is handled in-
ternally.
Readout of output samples can be shifted by half the blocklength to start at the
middle of the output block.
Either multiplexed or non-multiplexed input and output format (the multiplexed
mode allows direct interfacing with Motorola’s OFDM Demodulator MC92308).
Internal Bit reversal can be disabled to allow the construction of FFT modules for
blocklengths > 2K by using several devices in parallel.
Low clock rate inputs and outputs.
0.5
μ
m CMOS process at 3.3 V.
5 V tolerant inputs and outputs.
Figure 1. Block diagram of the FFT processor MC92307
Output
Reorder
Buffer
Input
Buffer
Twiddle Factor ROM
Control
FFT (11 stages)
incl. Rounding
8
CLK
OFFSET
RES[1:0]
FFTSTART
NOMUX
DIN
FFTSTART
8
DINR
16
24
12
DOUT
SYMSYNC
12
DOUTR
REVRSB
MC92307
This document contains information on a new product.
Specifications and information herein are subject to change without notice.
RESB
CLK
DINR[7:0]
DOUT[11:0]
DIN[7:0]
SYMSYNC
RES[1:0]
FFTSTART
OFFSET
DOUTR[11:0]
NOMUX
Ordering Information
Device
MC92307CI
Package
160QFP
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC92307CI | 2K - Samples FFT-Processor |
| MC92308 | OFDM Demodulator |
| MC92308CI | OFDM Demodulator |
| MC92314 | DVB-T Single Chip Demodulator Application Note |
| MC92500 | ATM Cell Processor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC92307CI | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:2K - Samples FFT-Processor |
| MC92308 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:OFDM Demodulator |
| MC92308CI | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:OFDM Demodulator |
| MC92314 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:DVB-T Single Chip Demodulator Application Note |
| MC9238E24B-FSR | 制造商:Mechatronics Fan Group 功能描述:92x92x38mm 24V, Bulk |
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