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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

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 91 92

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