AMIS-30421 Datasheet, PDF (34/41 Pages) ON Semiconductor – Micro-Stepping Stepper Motor Bridge Controller

AMIS−30421
Table 20. STATUS REGISTER 1 PARAMETERS
Parameter
Value
Value
Description
Info
0
No overcurrent
OVCXPT
Overcurrent detection in top transistor XP−terminal
p23
1
Overcurrent
0
No overcurrent
OVCXPB
1
Overcurrent detection in bottom transistor XP−terminal
p23
Overcurrent
0
No overcurrent
OVCXNT
Overcurrent detection in top transistor XN−terminal
p23
1
Overcurrent
0
No overcurrent
OVCXNB
1
Overcurrent detection in bottom transistor XN−terminal
p23
Overcurrent
0
No charge pump failure
CPFAIL
Charge pump failure detection
p23
1
Charge pump failure
OPEN_X
0
No open coil detected
Open coil detection for X−coil
1
Open coil detected
Note: a short circuit could trigger an open coil
p23
Status Register 2 (SR2)
Status Register 2 is located at address 0x06 and can only be read. Status Register 2 is a latched register. If an error occurs
the bit will be set and can only be cleared by reading out this bit². The register is used to report an overcurrent or open coil in
the Y−coil, or to report a thermal shutdown.
Notice that bit 7 is the parity bit (see READ operation p26).
Table 21. STATUS REGISTER 2
Address
0x06
Access
Reset
Data
Bit 7
R
0
PAR
Status Register 2 (SR2)
Bit 6
Bit 5
Bit 4
R
R
R
0
0
0
OVCYPT OVCYPB OVCYNT
Bit 3
R
0
OVCYNB
Bit 2
R
0
TSD
Bit 1
R
0
OPEN_Y
Bit 0
R
0
−
Table 22. STATUS REGISTER 2 PARAMETERS
Parameter
Value
Value
Description
Info
0
No overcurrent
OVCYPT
Overcurrent detection in top transistor YP−terminal
p23
1
Overcurrent
0
No overcurrent
OVCYPB
1
Overcurrent detection in bottom transistor YP−terminal
p23
Overcurrent
0
No overcurrent
OVCYNT
Overcurrent detection in top transistor YN−terminal
p23
1
Overcurrent
0
No overcurrent
OVCYNB
1
Overcurrent detection in bottom transistor YN−terminal
p23
Overcurrent
0
No thermal shutdown
TSD
Thermal Shutdown detection
p23
1
Thermal shutdown
0
No open coil detected
Open coil detection for X−coil
OPEN_Y
1
Open coil detected
Note: a short circuit could trigger an open coil
p23
2. In Sleep mode the register can be read out but will not be cleared!
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