AMIS-30543 Datasheet, PDF (36/38 Pages) ON Semiconductor – Micro-Stepping Motor Driver

AMIS−30543
CUR[4:0]
Selects IMCmax peak. This is the peak or amplitude of the regulated current waveform in the motor coils.
Table 13. SPI CONTROL PARAMETER OVERVIEW CUR[4:0]
Current Range
(Note 17)
Index CUR[4:0]
Current (mA)
(Note 16)
Current Range
(Note 17)
Index CUR[4:0]
Current (mA)
(Note 16)
0
00000
132
16
10000
1405
0
1
00001
245
17
10001
1520
2
00010
355
18
10010
1695
3
00011
395
19
10011
1850
4
00100
445
20
10100
2070
5
00101
485
21
10101
2240
1
6
00110
540
22
10110
2440
7
00111
585
8
01000
640
23
10111
3
24
11000
2700
2845
9
01001
715
25
11001
3000
10
01010
780
26
11010
3000
11
01011
870
27
11011
3000
12
01100
955
2
13
01101
1060
28
11100
29
11101
3000
3000
14
01110
1150
30
11110
3000
15
01111
1260
31
11111
3000
16. Typical current amplitude at T_J = 125
17. Reducing the current over different current ranges might trigger overcurrent detection. See dedicated application note for solutions
SPI Status Register Description
All 5 SPI status registers have Read Access and are default to “0” after power−on or hard reset.
Table 14. SPI STATUS REGISTERS
Structure
Content
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Access
R
R
R
R
R
R
Address
Reset
0
0
0
0
0
0
SR0 (04h) Data is not latched PAR
TW
CPFAIL
WD
OPENX OPENY
SR1 (05h)
Data is latched
PAR OVCXPT OVCXPB OVCXNT OVCXNB
−
SR2 (06h)
Data is latched
PAR OVCYPT OVCYPB OVCYNT OVCYNB
TSD
SR3 (07h) Data is not latched PAR
MSP[8:2]
SR4 (0Ah) Data is not latched PAR
MSP[6:0]
Where:
R
Reset
PAR
Read only mode access
Status after power−on or hard reset
Parity check
Bit 1
R
0
−
−
−
Bit 0
R
0
−
−
−
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