Datasheet

TMC5062 DATASHEET (Rev. 1.11 / 2017-MAY-16) 35
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6.2.2.3 ENCMODE – Encoder Register
0X38, 0X58: ENCMODE – ENCODER REGISTER
Bit
Name
Comment
10
enc_sel_decimal
0
Encoder prescaler divisor binary mode:
Counts ENC_CONST(fractional part) /65536
1
Encoder prescaler divisor decimal mode:
Counts in ENC_CONST(fractional part) /10000
9
latch_x_act
1: Also latch XACTUAL position together with X_ENC.
Allows latching the ramp generator position upon an N channel event as
selected by pos_edge and neg_edge.
8
clr_enc_x
0
Upon N event, X_ENC becomes latched to ENC_LATCH only
1
Latch and additionally clear encoder counter X_ENC at N-event
7
neg_edge
n p
N channel event sensitivity
6
pos_edge
0 0
N channel event is active during an active N event level
0 1
N channel is valid upon active going N event
1 0
N channel is valid upon inactive going N event
1 1
N channel is valid upon active going and inactive going N event
5
clr_once
1: Latch or latch and clear X_ENC on the next N event following the write
access
4
clr_cont
1: Always latch or latch and clear X_ENC upon an N event (once per
revolution, it is recommended to combine this setting with edge sensitive
N event)
3
ignore_AB
0
An N event occurs only when polarities given by
pol_N, pol_A and pol_B match.
1
Ignore A and B polarity for N channel event
2
pol_N
Defines active polarity of N (0=neg., 1=pos.)
1
pol_B
Required B polarity for an N channel event (0=neg., 1=pos.)
0
pol_A
Required A polarity for an N channel event (0=neg., 1=pos.)