Data Sheet

AMIS−30543
http://onsemi.com
35
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 CW motion (Note 15)
<DIRCTRL> = 1 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 Active mode
<SLP> = 1 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