Datapath Options - 7.2 English

FIR Compiler (PG149)

Document ID
PG149
Release Date
2022-10-26
Version
7.2 English

Input Data Type : The filter input data can be specified as either signed or unsigned. The signed option employs conventional two’s complement arithmetic. This parameter is automatically set in IP integrator but can also be overridden.

Input Data Width : The precision (in bits) of the filter input data samples. This parameter is automatically set in IP integrator but can also be overridden.

Input Data Fractional Bits : The number of Input Data Width bits used to represent the fractional portion of the filter input data samples. This field is for information only. It is used in conjunction with Coefficient Fractional Bits to calculate the filter Output Fractional Bits value. This parameter is automatically set in IP integrator but can also be overridden.

Output Rounding Mode : Specifies the type of rounding to be applied to the output of the filter.

Output Width : When using Full Precision, this field is disabled and indicates the output precision (in bits) of the filter output data samples, including bit growth. When using any other Rounding Mode, this field allows you to specify the desired output sample width.

Output Fractional Bits : This field reports the number Output Width bits used to represent the fractional portion of the filter output samples.