AMIS-30542 Datasheet, PDF (26/29 Pages) ON Semiconductor – AMIS-30542 Micro-Stepping Motor Driver

AMIS−30542
CUR[4:0]
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
122
16
10000
1390
1
00001
230
17
10001
1520
2
00010
350
18
10010
1680
3
00011
370
2
19
10011
1810
0
4
00100
410
20
10100
2000
5
00101
455
21
10101
2165
6
00110
500
22
10110
2400
7
00111
550
23
10111
2650
8
01000
615
24
11000
2880
9
01001
680
25
11001
3090
10
01010
750
26
11010
3325
11
01011
840
3
27
11011
3570
1
12
01100
916
28
11100
3825
13
01101
1010
29
11101
4090
14
01110
1110
30
11110
4370
15
01111
1205
31
11111
4750
17. Typical current amplitude at T_J = 125
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
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 OVCYYNT OVCYNB
TSD
SR3 (07h) 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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