AMIS-30542 Datasheet, PDF (25/29 Pages) ON Semiconductor – AMIS-30542 Micro-Stepping Motor Driver

AMIS−30542
Table 14. SPI CONTROL PARAMETER OVERVIEW
Symbol
Description
Status
Value
DIRCTRL Controls the direction of rotation (in combination with
logic level on input DIR)
<DIR> = 0
<DIRCTRL> = 0
<DIRCTRL> = 1
CW motion (Note 15)
CCW motion
(Note 15)
<DIR> = 1
<DIRCTRL> = 0
CCW motion
(Note 15)
<DIRCTRL> = 1
CW motion (Note 15)
NXTP
Selects if NXT triggers on rising or falling edge
<NXTP> = 0
Trigger on rising edge
<NXTP> = 1
Trigger on falling edge
EMC[1:0] Turn On – Turn−off Slopes of motor driver (Note 14)
00
Very Fast
01
Fast
10
Slow
11
Very Slow
SLAT
Speed load angle transparency bit
<SLAT> = 0
SLA is transparent
<SLAT> = 1
SLA is NOT transparent
SLAG
Speed load angle gain setting
<SLAG> = 0
Gain = 0.5
<SLAG> = 1
Gain = 0.25
PWMF
Enables doubling of the PWM frequency (Note 14)
<PWMF> = 0
Default Frequency
<PWMF> = 1
Double Frequency
PWMJ
Enables jittery PWM
<PWMJ> = 0
Jitter disabled
<PWMJ> = 1
Jitter enabled
SM[2:0] Stepmode
000
1/32 Micro − Step
001
1/16 Micro − Step
010
1/8 Micro − Step
011
1/4 Micro − Step
100
Compensated Half Step
101
Uncompensated Half Step
110
Full Step
111
n.a.
SLP
Enables sleep mode
<SLP> = 0
Active mode
<SLP> = 1
Sleep mode
MOTEN Activates the motor driver outputs
<MOTEN> = 0
Drivers disabled
<MOTEN> = 1
Drivers enabled
M[1:0]
PWM Mode Control
00
Default control
01
DCMin Mode 1
10
DCMin Mode 1’
11
DCMin Mode 2
StrB[1:0] PWM Strobe B Control: DON mask comparator time
00
(Note 16)
01
4 PWM clock cycles
8 PWM clock cycles
10
12 PWM clock cycles
11
19 PWM clock cycles
StrC
PWM Strobe C Control: Switch time top/bottom
regulation
<StrC> = 0
<StrC> = 1
86% duty cycle PWM regulator
75% duty cycle PWM regulator
StrE[1:0] PWM Strobe E Control: Compensation bridge active
00
time (Note 16)
01
4 PWM clock cycles
8 PWM clock cycles
10
12 PWM clock cycles
11
19 PWM clock cycles
14. The typical values can be found in Table 5: DC Parameters and in Table 6: AC parameters
15. Depending on the wiring of the motor connections
16. The duration is depending on the selected PWM frequency
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