AMIS-30622 Datasheet, PDF (37/42 Pages) AMI SEMICONDUCTOR – I2C Microstepping Motordriver

AMIS-30622
GotoSecurePosition
The Master provides this command to one or all the Stepper-motors to move to the secure position
SecPos[10:0].
GotoSecurePosition command
Byte
Content
Structure
bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
0
Slave Address
1
1
OTP3 OTP2 OTP1 OTP0 HW
0
1 GotoSecurePosition 1
0
0
0
0
1
0
0
HardStop
This command is internally triggered when an electrical problem is detected in one or both coils, leading to
switch off the H-bridges. If this problem is detected while the motor is moving, the <StepLoss> flag is raised
allowing warning the Master that steps may have been lost at the next GetStatus command. The Master for
some safety reasons can also issue a HardStop command.
Byte
0
1
Content
Slave Address
HardStop
HardStop command
Structure
bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
1
1
OTP3 OTP2 OTP1 OTP0 HW
0
1
0
0
0
0
1
0
1
ResetPosition
This command is provided to the circuit by the Master to reset ActPos and TagPos registers, in order to allow a
positioning for an initialisation of the Stepper-motor position.
Byte
0
1
Content
Slave Address
ResetPosition
ResetPosition command
Structure
bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
1
1
OTP3 OTP2 OTP1 OTP0 HW
0
1
0
0
0
0
1
1
0
ResetToDefaults
The Master provides this command to the circuit in order to reset the whole Slave node into the initial state.
ResetToDefaults will for instance overload the RAM with the Reset state of the Registers parameters. This
is another way for the Master to initialise a slave node in case of emergency, or simply to refresh the RAM
content.
ResetToDefaults command
Byte
Content
Structure
bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
0
Slave Address
1
1
OTP3 OTP2 OTP1 OTP0 HW
0
1
ResetToDefaults
1
0
0
0
0
1
1
1
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