Chapter 6 Control Mode of Operation ASDA-A2
6-4 Revision February, 2017
Filter Width
If the received frequency is much higher than the setting, it will be regarded as
the noise and filtered out.
Setting
Value
Min. pulse width*note1
(Low-speed filter frequency)
Setting
Value
Min. pulse width*note1
(High-speed filter frequency)
0 600 ns (0.83 Mpps) 0 150 ns (3.33 Mpps)
1 2.4 us (208 Kpps) 1 600 ns (0.83 Mpps)
2 4.8 us (104 Kpps) 2 1.2 us (416 Kpps)
3 9.6 us (52 Kpps) 3 2.4 us (208 Kpps)
4 No filter function 4 No filter function
NOTE
1) When the source of external pulse is from the high-speed differential signal and
the setting value is 0 (the high-speed filter frequency is 3.33Mpps at the moment),
then:
If the user uses 2~4MHz input pulse, it is suggested to set the filter value to 4.
Note: When the signal is the high-speed pulse specification of 4 Mpps and the
settings value of the filter is 4, then the pulse will not be filtered.
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