Filter
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The sample FIR is a quick and dirty low pass filter with linear phase. The design parameters of the filter are a
–3dB cutoff at Ω
c
= 30π rad/sec, ω
c
= 0.3π rad and an attenuation of 50dB at Ω
r
= 45π rad/sec, ω
r
= 0.45π
rad. For example, a sampling rate of 64000 samples/second (T
-1
= 64000 samples/s), yields a analog
frequency cutoff of 9.6kHz and the 50dB attenuation corner point at 14.4kHz.
xor_iodimm.c performs the XOR logic function on 3 inputs. The XOR is performed on the first two inputs
and the result output to the first output. The result of the second and third input XOR are sent to the
second output. The source code for xor_iodimm.c is available in /opt/samples/card_specific/
iodimm/dio.
in0 in1 in2 out0 out1