The rate, or sample period, at which the core accepts input samples and generates output samples is determined by the hardware oversampling rate and rate change value specified on the core interface in the Vivado IDE.
The hardware oversampling rate can be specified by one of two methods: using the Input Sampling Frequency, per channel, and the intended Clock Frequency; or using the input or output sample period.
Note: When using the Advanced Interleaved Data Channels (see Interleaved Data Channel Filters ), the Input Sample Frequency is specified for the highest frequency channel (fs) supported by the selected advanced channel configuration. For N channels, this is the sample frequency of PN-0, as seen in Table: Advanced Interleaved Data Channel Patterns .
When the core is configured as an interpolating (up-sampling) or a decimating (down-sampling) filter the output rate is increased, or decreased, relative to the input rate by the integer or fractional rate change value specified on the core interface in the Vivado IDE.