AMIS-30532 Datasheet, PDF (26/29 Pages) ON Semiconductor – Micro-Stepping Motor Driver

CUR[4:0]
AMIS--30532
Selects IMCmax peak. This is the peak or amplitude of the regulated current waveform in the motor coils.
Table 15. SPI CONTROL PARAMETER OVERVIEW CUR[4:0]
Current Range
(Note 18)
Index
CUR[4:0]
Current (mA)
(Note 17)
Current Range
(Note 18)
Index
CUR[4:0]
Current (mA)
(Note 17)
0
00000
66
16
10000
735
1
00001
135
17
10001
800
2
00010
189
18
10010
883
3
00011
200
2
19
10011
975
0
4
00100
221
5
00101
244
20
10100
21
10101
1077
1189
6
00110
269
22
10110
1255
7
00111
297
23
10111
1485
8
01000
328
24
11000
1625
9
01001
366
25
11001
1767
10
01010
400
26
11010
1950
11
01011
442
1
12
01100
488
13
01101
538
3
27
11011
2153
28
11100
2378
29
11101
2552
14
01110
594
30
11110
2775
15
01111
654
31
11111
3015
17. Typical current amplitude at T_J = 125°C
18. Reducing the current over different current ranges might trigger overcurrent detection. See dedicated application note for solutions
SPI Status Register Description
All 4 SPI status registers have Read Access and are default to ”0” after power--on or hard reset.
Table 16. SPI STATUS REGISTERS
Address
SR0 (04h)
SR1 (05h)
SR2 (06h)
SR3 (07h)
Where:
R
Reset
PAR
Content
Access
Reset
Data is not
latched
Data is
latched
Data is
latched
Data is not
latched
Bit 7
R
0
PAR
PAR
PAR
PAR
Bit 6
R
0
TW
Bit 5
R
0
CPfail
OVCXPT OVCXPB
OVCYPT OVCYPB
Read only mode access
Status after power--on or hard reset
Parity check
Structure
Bit 4
Bit 3
R
R
0
0
WD
OPENX
OVCXNT OVCXNB
OVCYYNT OVCYNB
MSP[6:0]
Bit 2
R
0
OPENY
--
TSD
Bit 1
R
0
--
--
--
Bit 0
R
0
--
--
--
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