AMIS-30543 Datasheet, PDF (35/38 Pages) ON Semiconductor – Micro-Stepping Motor Driver

AMIS−30543
Table 12. 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 not transparent
<SLAT> = 1
SLA is 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 (only valid if ESM[2:0] = 000)
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
Uncompensated full step
111
Uncompensated full step
ESM[2:0] Stepmode
001
1/128 Micro−Step
010
1/64 Micro−Step
011
Compensated full step, 2 phase on
100
Compensated full step, 1 phase on
Other
Stepping mode defined by SM[2:0]
SLP
Enables sleep mode (if V_BB > 9 V)
<SLP> = 0
<SLP> = 1
Active mode
Sleep mode
MOTEN Activates the motor driver outputs
<MOTEN> = 0
Drivers disabled
<MOTEN> = 1
Drivers enabled
14. The typical values can be found in Table 4: DC Parameters and in Table 5: AC parameters
15. Depending on the wiring of the motor connections
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