参数资料
型号: COREFIR-RM
厂商: Microsemi SoC
文件页数: 55/67页
文件大小: 0K
描述: IP MODULE COREFIR
标准包装: 1
系列: *
Coefficient Specification
3.
4.
An extra empty line must be placed after the last coefficient of the last set.
The file must match the core parameters entered through the GUI:
? Coefficient bit width (COEF_WIDTH)
? Number of coefficient sets (COEF_SETS)
? Symmetry of the filter (COEF_SYMM) – applies to the Fully Enumerated type only
? Coefficient radix: decimal, hexadecimal, or binary
A few examples of the filter coefficient file are given in Figure 49 , Figure 50 , and Figure 54 .
coefficient_set_1
5
6
10
25
63
-1
-11
-32
-63
Figure 49 · Coefficient File Example – 9 Taps, 7 Bits, Radix-10
Figure 49 shows a non-symmetric 9-tap 7-bit constant coefficient filter. Coefficients are entered using
decimal (Radix-10) entries.
coefficient_set_1
5
6
A
19
3F
7F
75
60
41
coefficient_set_1
0000101
0000110
0001010
0011001
0111111
1111111
1110101
1100000
1000001
Figure 50 · Coefficient File Examples – 9 Taps, 7 Bits, Radix-16, and Radix-2
Figure 50 shows the same set of constant coefficients in hexadecimal and binary formats. All coefficient files
shown in Figure 49 and Figure 50 will produce the same filter. The filter impulse response is shown in Figure
If the COEF_SYMM core parameter is set to generate a symmetric or anti-symmetric filter, any of the
coefficient files of Figure 49 and Figure 50 can identify such filters. The impulse response examples of the
symmetric 17-tap filter and anti-symmetric 18-tap filter are depicted in Figure 52 and Figure 53 , respectively.
This applies to the Fully Enumerated type only.
56
CoreFIR v8.5 Handbook
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