AMIS-30622 Datasheet, PDF (33/35 Pages) AMI SEMICONDUCTOR – I2C Microstepping Motordriver

AMIS-30622 I²C Microstepping Motordriver
Data Sheet
SetPosition
This command is provided to the circuit by the Master to
the motors to a given position relative to the zero position,
defined in number of half or micro steps, according to
StepMode[1:0] value.
SetPosition will not be performed if one of the following
flags is set to one:
• temperature shutdown <TSD>
• under voltage <UV2>
• step loss <StepLoss>
• electrical defect <ElDef>
Byte Content
0
Slave Address
1
SetPosition
2
N/A
3
N/A
4
Position byte1
5
Position byte2
bit 7
1
1
1
1
SetPosition Command
bit 6
bit 5
Structure
bit 4
bit 3
1
OTP3
OTP2
OTP1
0
0
0
1
1
1
1
1
1
1
1
1
TagPos[15:8]
TagPos[7:0]
bit 2
OTP0
0
1
1
bit 1
HW
1
1
1
bit 0
0
1
1
1
SoftStop
If a SoftStop command occurs during a motion of the
stepper motor, it provokes an immediate deceleration to
Vmin followed by a stop, regardless of the position
reached. This command occurs in the following cases:
• The chip temperature raises the thermal shutdown
threshold.
• The Master requests a SoftStop.
Byte
0
1
Content
Slave Address
SoftStop
bit 7
1
1
bit 6
1
0
SoftStop Command
bit 5
Structure
bit 4
OTP3
OTP2
0
0
bit 3
OTP1
1
bit 2
OTP0
1
bit 1
HW
1
bit 0
0
1
AMI Semiconductor - Rev. 2.3
www.amis.com
33