AMIS-30512 Datasheet, PDF (25/30 Pages) ON Semiconductor – Micro-Stepping Motor Driver

AMIS−30512
Table 15. SPI Control Register 2
Control Register 2 (CR2)
Structure
Address
Content
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
03h
Reset
0
0
0
0
0
0
0
0
Data
MOTEN
SLP
SLAG
SLAT
−
−
−
−
Where:
R/W
Reset:
MOTEN
Read and Write access
Status after power−On or hard reset
Motor enable
SLP
SLAG
SLAT
Sleep
Speed load angle gain
Speed load angle transparency
Table 16. SPI Control Parameter Overview SLAT
Symbol
Description
Status
Behaviour
SLAT
Speed Load Angle Transparency bit
<SLAT> = 0
SLA is transparent
<SLAT> = 1
SLA is NOT transparent
Table 17. SPI Control Parameter Overview SLAG
Symbol
Description
Status
Value
SLAG
Speed Load Angle Gain setting
<SLAG> = 0
Gain = 0.5
<SLAG> = 1
Gain = 0.25
Table 18. SPI Control Parameter Overview PWMF
Symbol
Description
Status
Value
PWMF
Enables doubling of the PWM frequency
Table 19. SPI Control Parameter Overview PWMJ
<PWMF> = 0
<PWMF> = 1
f_PWM = 22.8 kHz
f_PWM = 45.6 kHz
Symbol
Description
Status
Behaviour
PWMJ
Enables jittery PWM
<PWMJ> = 0 Jitter disabled
<PWMJ> = 1 Jitter enabled
Table 20. SPI Control Parameter Overview SLP
Symbol
Description
Status
Behaviour
SLP
Enables sleep mode
<SLP> = 0
Active mode
<SLP> = 1
Sleep mode
Table 21. SPI Control Parameter Overview MOTEN
Symbol
Description
Status
Value
MOTEN
Activates the motor driver outputs
<MOTEN> = 0 Drivers disabled
<MOTEN> = 1 Drivers enabled
Table 22. SPI Control Parameter Overview DIRCTRL
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
CCW motion
<DIR> = 1
<DIRCTRL> = 0
CCW motion
<DIRCTRL> = 1
CW motion
Table 23. SPI Control Parameter Overview NXTP
Symbol
Description
Status
Value
NXTP
Selects if NXT triggers on rising or falling edge
<NXTP> = 0
Trigger on rising edge
<NXTP> = 1
Trigger on falling edge
CUR[4:0]
Selects IMCmax peak. This is the peak or amplitude of the regulated current waveform in the motor coils.
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