Chapter 6 Control Mode of Operation ASDA-M
6-4 Revision December, 2014
Filter Width
If the received frequency is much higher than the setting, it will be
regarded as the noise and filtered out.
Setting
Value
Low-speed filter
frequency
(Min. pulse width*note1)
Setting
Value
High-speed filter
frequency
(Min. pulse width*note1)
0 0.83Mpps (600ns) 0 3.33Mpps (150ns)
1 208Kpps (2.4us) 1 0.83Mpps (600ns)
2 104Kpps (4.8us) 2 416Kpps (1.2us)
3 52Kpps (9.6us) 3 208Kpps (2.4us)
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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