Data Sheet

AMIS−30543
http://onsemi.com
36
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
0 00000 132
3
16 10000 1405
1 00001 245 17 10001 1520
2 00010 355 18 10010 1695
1
3 00011 395 19 10011 1850
4 00100 445 20 10100 2070
5 00101 485 21 10101 2240
6 00110 540 22 10110 2440
7 00111 585 23 10111 2700
8 01000 640 24 11000 2845
9 01001 715 25 11001 3000
2
10 01010 780 26 11010 3000
11 01011 870 27 11011 3000
12 01100 955 28 11100 3000
13 01101 1060 29 11101 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
Address
Content
Structure
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Access R R R R R R R R
Reset 0 0 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 Read only mode access
Reset Status after power−on or hard reset
PAR Parity check