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PM0014 bảng dữ liệu(PDF) 42 Page - STMicroelectronics

tên linh kiện PM0014
Giải thích chi tiết về linh kiện  General-purpose DSP library
PDF  46 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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PM0014 bảng dữ liệu(HTML) 42 Page - STMicroelectronics

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Signal processing library functions
PM0014
42/46
Coefficients must be stored in memory as follow:
addr
Iir.CoeffPtr
----> b0
addr
Iir.CoeffPtr + 2 ----> b1
...
addr
Iir.CoeffPtr + 2 * (IirNumberCoeffs/2 - 1)---->
b(IirNumberCoeff/2)-1
addr
Iir.CoeffPtr + 2 * (IirNumberCoeffs/2)----> a0 = 0
addr
Iir.CoeffPtr + 2 * (IirNumberCoeffs/2 + 1) ----> a1
...
addr
Iir.CoeffPtr + 2 * (IirNumberCoeffs - 1)---->
a(IirNumberCoeff/2)-1
Assembly source
code:
iir2_q15_q15_q15.asm
Code size and cycles: Size: 130 bytes
Instruction Cycles: 36 + NbOutput * (17 + IirNumberCoeffs)
Test:
Two test cases are provided. For each test case, two files allow to
test the function: an input vector file (dirFilterX_q15_q15_q15.in)
and an output vector file (dirfilterX_q15_q15_q15.res). The
configuration is the following:
number of coefficients: 32
number of output samples: 201
To perform the test, initialize the Delay line[] to zero, then Coeff[]
and Input[] with the dirfilterX_q15_q15_q15.in file: the first values
are the coefficients of the filter and the rest of the values are the
input values. (See the example for declarations).



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