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參數(shù)資料
| 型號(hào)： | fft_on_chip |
| 廠商： | Altera Corporation |
| 英文描述： | Fast Fourier Transform(傅立葉變換) |
| 中文描述： | 快速傅里葉變換（傅立葉變換） |
| 文件頁(yè)數(shù)： | 1/4頁(yè) |
| 文件大?。?/td> | 155K |
| 代理商： | FFT_ON_CHIP |
Altera Corporation
1
round
Data Word Rounder
February 1997, ver. 1
Functional Specification 5
A-FS-05-01
Features
I
I
I
I
I
I
I
I
round reference design implementing a data word rounder
Parameterized input and output widths
Optimized for FLEX
10K and FLEX 8000 device families
Rounds arbitrary-length words to shorter words
Signed (two's complement) or unsigned operation
Built-in post-round adder
Supported by MAX+PLUS
II
Useful for a variety of applications, including digital filters, image
processing, and video processing
General
Description
In most digital signal processing (DSP) systems, word length and word
growth effects are important aspects of design. Because the result of a
calculation often contains more bits than is desired, some method must be
used to reduce the number of significant bits in a particular data path.
Although simple truncation of the least significant bits (LSBs) is the
easiest method to use, it produces excess noise in the LSB. The
function uses a technique of truncation and rounding to decrease the
number of significant bits while minimizing noise.
Figure 1
shows the
symbol for the
round
reference design.
round
Figure 1. round Symbol
The concept of rounding binary digits is the same as rounding decimal
digits. If the digit to the right of the decimal point is greater than 0.5,
round the digit up; otherwise, round the digit down. For example,
rounding the decimal number 1.25 (01.01
B
the decimal number 1.75 (01.11
B
) yields 2 (10
B
) yields 1 (01
B
).
), and rounding
DATAA[
]
DATAB[
]
RESULT[
]
COUT
OVERFLOW
WIDTHI=
REPRESENTATION=
WIDTHR=
round
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| FGC1500A-130DS | HIGH POWER INVERTER USE PRESS PACK TYPE |
| FGC3500AX-120DS | HIGH POWER INVERTER USE PRESS PACK TYPE |
| FGC6000AX-120DS | HIGH POWER INVERTER USE PRESS PACK TYPE |
| FGC800A-130DS | HIGH POWER INVERTER USE PRESS PACK TYPE |
| FHR4-4026H | Special Resistors |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| FFTP-03-D-03.85-01 | 制造商:Samtec Inc 功能描述:.050 X .050 C/L TWISTED PAIR FEMALE IDC ASSEMBLY - Bulk |
| FFTP-03-D-08.77-01 | 制造商:Samtec Inc 功能描述:.050 X .050 C/L TWISTED PAIR FEMALE IDC ASSEMBLY - Bulk |
| FFTP-03-D-08.77-01-R | 制造商:Samtec Inc 功能描述:.050 X .050 C/L TWISTED PAIR FEMALE IDC ASSEMBLY - Bulk |
| FFTP-03-D-18.00-01 | 制造商:Samtec Inc 功能描述:.050 X .050 C/L TWISTED PAIR FEMALE IDC ASSEMBLY - Bulk |
| FFTP-03-D-18.00-01-R | 制造商:Samtec Inc 功能描述:.050 X .050 C/L TWISTED PAIR FEMALE IDC ASSEMBLY - Bulk |
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