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 I2C-SPI Control Center

Noise Filter

(video - Noise Filter)

Users can filter the signal whose length below 1-10 Clock according to the sampling frequency (see figure 1 for setting window).

Figure 1: Noise filter setting window.


For example, noise is produced during waveform capturing with 10MHz sampling frequency (see figure 2).

Figure 2: 100ns noise is produced in I2CSCK.


This noise can be filtered by the noise filter function. Set the sampling frequency as 10MHz. Since the Clock length is the reciprocal of sampling frequency (1/10MHz = 100ns), the condition only needs to be set as 1 Clock. See figure 3 for the filtered waveform.

Figure 3: Waveform after filtered.