NOVA electronics Inc. MCX514 -
207
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207
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7.3.6
Input Signal Filter Mode Setting
Code
Command
Symbol
Data Length (byte)
25
h
Input signal filter mode setting
FLM
2
“FLM” is the parameter setting the enable / disable of input signal filter and the time constant of 2 filters.
D7
D6
D5
D4
H
L
D15
D14
D13
D12
D11
D10
D9
D8
D3
D2
D1
D0
WR6
FL00
FL01
FL02
FE7
FE4
FE5
FE6
FE3
FE1
FE2
FE0
FL13
FL03
FL10
FL11
FL12
Filter Time Constant B
Enable / disable of Input Signal Filter
Filter Time Constant A
D7
~
0 FE7
~
0
For each input signals as shown in the table below, it can set whether the IC built-in filter function is
enabled or the signal is passed through.
0: disable (through), 1: enable
Specified bit
Input signal
Applied time constant
D0(FE0)
EMGN
D1(FE1)
nLMTP, nLMTM
D2(FE2)
nSTOP0, nSTOP1
Filter Time Constant A
D3(FE3)
nINPOS, nALARM
D4(FE4)
nPIO3
~
0
D5(FE5)
nPIO7
~
4
D6(FE6)
nSTOP2
Filter Time Constant B
D7(FE7)
nECA, nECB
D11
~
8 FL03
~
00
Set the time constant of the input signal filter specified by D5~D0 (FE5~0) to Filter Time Constant A.
D15
~
12 FL13
~
10
Set the time constant of the input signal filter specified by D7, D6 (FE7, 6) to Filter Time Constant B.
(When CLK=16MHz)
Time Constant
(Hex)
Removable maximum
noise width
Input signal delay time
0
437.5
n
sec
500
n
sec
1
875
n
sec
1μsec
2
1.75μsec
2μsec
3
3.5
μsec
4μsec
4
7
μsec
8μsec
5
14
μsec
16μsec
6
28
μsec
32μsec
7
56
μsec
64μsec
8
112μsec
128μsec
9
224μsec
256μsec
A
448μsec
512μsec
B
896μsec
1.024
m
sec
C
1.792
m
sec
2.048
m
sec
D
3.584
m
sec
4.096
m
sec
E
7.168
m
sec
8.192
m
sec
F
14.336
m
sec
16.384
m
sec
As for EXPLSN, PIN7
~
0 input signals, filter function is not available.
See chapter 2.11 for details of input signal filter function.
D15~D0 will be set to 0 at reset.