AMIS-30521 Datasheet, PDF (20/26 Pages) AMI SEMICONDUCTOR – Micro-stepping Motor Driver

AMIS-30521 Micro-stepping Motor Driver
Data Sheet
Table 17: SPI Control Parameter Overview SLAG
Symbol
Description
SLAG
Speed Load Angle Gain setting
Status
<SLAG> = 0
<SLAG> = 1
Value
Gain = 0.5
Gain = 0.25
Table 18: SPI Control Parameter Overview PWMF
Symbol
Description
PWMF
Enables doubling of the PWM frequency
Status
<PWMF> = 0
<PWMF> = 1
Value
f_PWM = 22.8kHz
f_PWM = 45.6kHz
Table 19: SPI Control Parameter Overview PWMJ
Symbol
Description
PWMJ
Enables jittery PWM
Status
<PWMJ> = 0
<PWMJ> = 1
Behavior
Jitter disabled
Jitter enabled
Table 20: SPI Control Parameter Overview SLP
Symbol
Description
SLP
Enables sleep mode
Status
<SLP> = 0
<SLP> = 1
Behavior
Active mode
Sleep mode
Table 21: SPI Control Parameter Overview MOTEN
Symbol
Description
MOTEN
Activates the motor driver outputs
Status
<MOTEN> = 0
<MOTEN> = 1
Value
Drivers disabled
Drivers enabled
Table 22: SPI Control Parameter Overview DIRCTRL
Symbol
Description
DIRCTRL
Controls the direction of rotation
(in combination with logic level on input DIR)
Status
<DIR> = 0
<DIR> = 1
<DIRCTRL> = 0
<DIRCTRL> = 1
<DIRCTRL> = 0
<DIRCTRL> = 1
Value
CW motion
CCW motion
CCW motion
CW motion
Table 23: SPI Control Parameter Overview NXTP
Symbol
Description
NXTP
Selects if NXT triggers on rising or falling edge
Status
<NXTP> = 0
<NXTP> = 1
Value
Trigger on rising edge
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.
Table 24: SPI Control Parameter Overview CUR[4:0]
Index
CUR[4:0]
Current (mA)
0
00000
30
1
00001
60
2
00010
90
3
00011
100
4
00100
110
5
00101
120
6
00110
135
7
00111
150
8
01000
160
9
01001
180
A
01010
200
B
01011
220
C
01100
240
D
01101
270
E
01110
300
F
01111
325
Index
10
11
12
13
14
15
16
17
18
19
1A
1B
1C
1D
1E
1F
CUR[4:0]
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
Current (mA)
365
400
440
485
535
595
650
725
800
885
970
1070
1190
1300
1450
1600
AMI Semiconductor – June 2007, M-20683-001
20
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