TMC8462 Datasheet • Document Revision V1.4 • 2018-May -09
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7.3.4 Step and Direction Signal Generator
7.3.4.1 Register 18 – SD_CH0_STEPRATE
Bit
Description
ECAT
PDI
Range [Unit]
31:0
Signed accumulation constant c for SD_CH0.
This accumulation constant determines the
time tSTEP between two successive steps and
thereby the step frequency.
-/w
-/w
0. . . +(232) − 1
The Sign (MSB) of this accumulation constant is
used for the direction signal output (D0, D0n).
The accumulation constant c is 2th comple-
ment.
(see also Section 7.14)
Table 143: MFC IO Register 18 – SD_CH0_STEPRATE
7.3.4.2 Register 19 – SD_CH1_STEPRATE
Bit
Description
ECAT
PDI
Range [Unit]
31:0
Signed accumulation constant c for SD_CH1.
This accumulation constant determines the
time tSTEP between two successive steps and
thereby the step frequency.
-/w
-/w
0. . . +(232) − 1
The Sign (MSB) of this accumulation constant is
used for the direction signal output (D1, D1n).
The accumulation constant c is 2th comple-
ment.
(see also Section 7.14)
Table 144: MFC IO Register 19 – SD_CH1_STEPRATE
7.3.4.3 Register 20 – SD_CH2_STEPRATE
Bit
Description
ECAT
PDI
Range [Unit]
31:0
Signed accumulation constant c for SD_CH2.
This accumulation constant determines the
time tSTEP between two successive steps and
thereby the step frequency.
-/w
-/w
0. . . +(232) − 1
The Sign (MSB) of this accumulation constant is
used for the direction signal output (D2, D2n).
The accumulation constant c is 2th comple-
ment.
(see also Section 7.14)
Table 145: MFC IO Register 20 – SD_CH2_STEPRATE
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