AMIS-30621 Datasheet, PDF (56/59 Pages) AMI SEMICONDUCTOR – LIN Microstepping Motordriver

AMIS−30621
Table 59. Sleep WRITING FRAME
Byte
0
1
2
3
Content
Identifier
Data 1
Data 2
Checksum
Bit 7
0
Bit 6
0
Bit 5
1
Structure
Bit 4
Bit 3
1
1
0x00
0xFF
Checksum over data
Bit 2
1
Bit 1
0
Bit 0
0
SoftStop
If a SoftStop command occurs during a motion of the stepper motor, it provokes an immediate deceleration to Vmin (see
Minimum Velocity) followed by a stop, regardless of the position reached. Once the motor is stopped, TagPos register is
overwritten with value in ActPos register to ensure keeping the stop position.
Note: The dynamic ID allocation has to be assigned to _{• The LIN master requests a SoftStop.}
‘General Purpose 2 Data bytes’ ROM pointer ‘0000’. The
command is decoded only from the command data.
• The SoftStop will correspond to the following two
data bytes LIN writing frame (type #1).
Note: A SoftStop command occurring during a
DualPosition sequence is not taken into account.
Command SoftStop occurs in the following cases:
• The chip temperature rises above the thermal shutdown
threshold (see DC Parameters and Temperature
Management);
Table 60. SoftStop WRITING FRAME TYPE #1
Structure
Byte
Content
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
Identifier
*
*
0
ID4
ID3
ID2
ID1
ID0
1
Data 1
1
CMD[6:0] = 0x0F
2
Data 2
Broad
AD[6:0]
3
Checksum
Checksum over data
Where:
(*) According to parity computation
Broad: If broad = ‘0’ all the stepper motors connected to the LIN bus will stop with deceleration.
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