Filter
Top Products
FX2N-5A Special function block Buffer Memory (BFM) 7
7-25
7.2.16 BFM 25 Filter-level selection register (READ/WRITE)
The following Table shows the possible values of BFM 25 for using the digital Filter of the
FX
2N
-5A-Device:
Table 7.2: Bit assignment in BFM 25
Bit No. Channel No. Description
b0
CH1 to CH4
Filter: 0 = off
1 = 2nd level
2 = 5th level
3 = 7th level
b1
b2
b3
b4
CH1 to CH4
Cut-off frequency factor F
1
:
0 = no cut-off frequency selected
1 = (0.1
×
1/sampling time)Hz
2 = (0.05
×
1/sampling time)Hz
3 = (0.025
×
1/sampling time)Hz
4 = (0.01
×
1/sampling time)Hz
b5
b6
b7
b8
reserved
b9
reserved
b10
reserved
b11
reserved
b12
reserved
b13
reserved
b14
reserved
b15
reserved