Datasheet

TMC4361A Datasheet | Document Revision 1.22 • 2017-JAN-12
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Read entire documentation; especially the “Supplemental Directives” on page 224.
 MAIN MANUAL 
Configuration of Step/Dir Input Filter
Step/Dir input filtering setup differs slightly from the other groups, because the other four
groups already complete the whole INPUT_FILT_CONF register 0x03.
This is why it is possible to assign the Step/Dir input group to one of the existing groups by
setting the appropriate bit in front of the setup parameters.
i If no group is selected, Step/Dir input filtering is automatically assigned to the encoder input interface
filter group.
The following example shows the filter settings for Step/Dir interface input
pins, which are taken from the reference input pin group.
Step/Dir input pin filter settings are derived from the Reference input filter
group:
SR_SDIN = 6, FILT_L_SDIN = 3
NOTE:
 Other input filter groups are:
SR_ENC_IN = 5, FILT_L_ENC_IN = 6
SR_REF = 6, FILT_L_REF = 3
SR_S = 2, FILT_L_S = 4
SR_ENC_OUT = 0, FILT_L_ENC_OUT = 0
Step/Dir Input Filter Parameter
Figure 18: Step/Dir Input Filter Parameter
0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 1 0 1 1 0 1 1 0 0 1 1 0 0 1 0 1
Serial clock inputs
3
1
Bits of register 0x03:
Input filter group:
Filter parameter:
Example:
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9 8 7 6 5 4 3 2 1 0
START input Reference inputs Encoder inputs
FILT_L_EN
C_OUT
SR_ENC_O
UT
FILT_L_S SR_S FILT_L_REF
SR_ENC_R
EF
FILT_L_ENC_I
N
SR_ENC_IN
= possible selection bits to assign Step/Dir input filter parameter
Step/Dir Pin
Filter
Assignment