ARM IM-AD1 - Manual (Page 65)

Reference Design Example
ARM DUI 0163B Copyright © 2001-2003. All rights reserved. 4-19
Figure 4-3 Full-step two-phase output waveforms
Figure 4-4 Full-step single-phase output waveforms
2 DOCOUNT Read/write Write a 1 to this bit to transfer the contents of the
buffer register to the count and speed registers.
This causes the corresponding number of steps
to be performed.
1 SINGLESTEP Read/write Write a 1 to this bit to advance the stepper motor
by one step. The step speed register, step count
register, and bit 2 are ignored.
0 DIR Read/write This bit controls the direction of rotation. The
actual direction of rotation (clockwise or
anticlockwise) depends on how the motor is
wired to the interface module.
Table 4-11 Stepper control register (continued)
Bits Name Access Function
Stepx_PH3
Stepx_PH2
Stepx_PH1
Stepx_PH4
Stepx_PH3
Stepx_PH2
Stepx_PH1
Stepx_PH4