AMIS-30521_10 Datasheet, PDF (24/28 Pages) ON Semiconductor – Micro-Stepping Motor Driver

AMIS−30521, NCV70521
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: CURRENT AMPLITUDE 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
33
16 10000
365
1 00001
64
17 10001
400
2 00010
95
18 10010
440
3 00011
104
0
4 00100
115
5 00101
126
2
19 10011
485
20 10100
530
21 10101
585
6 00110
138
22 10110
630
7 00111
153
23 10111
750
8 01000
166
24 11000
825
9 01001
190
25 11001
895
10 01010
205
26 11010
975
11 01011
230
1
12 01100
250
13 01101
275
3
27 11011
1065
28 11100
1155
29 11101
1245
14 01110
300
30 11110
1365
15 01111
325
31 11111
1480
16. Typical current amplitude at T_J = 125.
17. Reducing the current over different current ranges might trigger overcurrent detection, please refer to 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 14. SPI STATUS REGISTERS
Address
SR0 04h
SR1 05h
SR2 06h
SR3 07h
Content
Access
Reset
Data Not
Latched
Data is
Latched
Data is
Latched
Data Not
Latched
Bit 7
R
0
PAR
Bit 6
R
0
TW
PAR OVCXPT
PAR OVCYPT
PAR
Bit 5
R
0
CPfail
Structure
Bit 4
Bit 3
R
R
0
0
−
OPENX
OVCXPB
OVCXNT
OVCXNB
OVCYPB OVCYYNT OVCYNB
MSP[6:0]
Where:
R
Reset
PAR
Read only mode access
Status after Power−On or hard reset
Parity check
Bit 2
R
0
OPENY
−
TSD
Bit 1
R
0
−
Bit 0
R
0
−
−
−
−
−
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