AMIS-30523 Datasheet, PDF (32/35 Pages) ON Semiconductor – CAN Micro-Stepping Motor Driver

AMIS−30523
CUR[4:0] Selects IMCmax peak. This is the peak or amplitude of the regulated current waveform in the motor coils.
Table 16. SPI CONTROL PARAMETER OVERVIEW CUR[4:0]
Current Range
(Note 20)
Index CUR[4:0]
Current (mA)
(Note 19)
Current Range
(Note 20)
Index CUR[4:0]
Current (mA)
(Note 19)
0 00000
33
16 10000
365
1 00001
64
17 10001
400
2 00010
95
18 10010
440
3 00011
104
2
19 10011
485
0
4 00100
115
20 10100
530
5 00101
126
21 10101
585
6 00110
138
22 10110
630
7 00111
153
8 01000
166
23 10111
750
3
24 11000
825
9 01001
190
25 11001
895
10 01010
205
26 11010
975
11 01011
230
27 11011
1065
1
12 01100
250
28 11100
1155
13 01101
275
29 11101
1245
14 01110
300
30 11110
1365
15 01111
325
31 11111
1480
19. Typical current amplitude at T_J = 125°C
20. Reducing the current over different current ranges might trigger overcurrent detection. See application note AND8372/D 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 17. 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
OVCXPT
OVCYPT
Read only mode access
Status after power−on or hard reset
Parity check
Bit 5
R
0
CPfail
OVCXPB
OVCYPB
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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