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參數(shù)資料
| 型號： | FIR Filters |
| 廠商： | Altera Corporation |
| 英文描述： | FIR Compiler(有限的脈沖響應濾波器) |
| 中文描述： | 飛行編譯器（有限的脈沖響應濾波器） |
| 文件頁數(shù)： | 16/19頁 |
| 文件大?。?/td> | 323K |
| 代理商： | FIR FILTERS |
Altera Corporation
16
fir_3x3
Symmetrical Video FIR Filter
Features
I
I
I
I
Symmetrical video FIR filter reference design
High performance: > 100 MSPS
Parallel implementation for maximum performance
Parameterized data widths and symmetry
General
Description
The Altera
fir_3x3
symmetrical video FIR filter is a linear-phase design
with an operation speed of over 100 MSPS. By efficiently using the Altera
FLEX architecture, this filter provides an extremely fast, flexible, and cost-
effective convolution operation. These filters are implemented with the
vector-multiplier approach described in
Application Note 73
(
Implementing
FIR Filters in FLEX Devices
)
. The coefficients are stored in LUTs and their
values are determined at compilation; however, the coefficients can be
changed by reconfiguring the device.
Figure 13
shows the symbol for the
fir_3x3
symmetrical video FIR filter.
Figure 13. FIR_3x3 Video Filter Symbol
Function Prototype
The AHDL Function Prototype for the
fir_3x3
function is shown below:
FUNCTION fir_3x3 (xin[3..1][width..1], clk, aclr)
WITH (width, rom_p, output_p, internal_p,
pipelined)
RETURNS (y[output_p..1]);
FIR_3x3
Y[OUTPUT_P..1]
INTERNAL_P =
PIPELINED =
CLK
ACLR
XIN[3..1][WIDTH..1]
ROM_P =
OUTPUT_P =
WIDTH =
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