CIC Filter
A CIC (Cascaded Integrator Comb) filter is designed to allow high levels of interpolation without high levels of computation. Most of the interpolation in the OSP block is done in the CIC filter. The interpolation range of the CIC filter is 6x to 256x. The CIC filter is a series of combs (differentiators) followed by a zero stuffer, followed by a series of integrators. The CIC filter in the OSP has six stages (six combs and six integrators). The CIC filter can be enabled/disabled by setting the CIC Filter Enabled and FIR Filter Enabled properties.
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Note The FIR and the CIC Filters must have the same enable/disable setting. |
When using the CIC filter, consider the following:
