L6472 STMICROELECTRONICS [STMicroelectronics], L6472 Datasheet - Page 48

• Manufacturer Part Number: L6472
• Description: dSPIN fully integrated microstepping motor driver
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Programming manual
9.1.16
48/69
STEP_MODE
The STEP_MODE register has the following structure:
Table 18.
1. When the register is written this bit should be set to 1.
The STEP_SEL parameter selects one of five possible stepping modes:
Table 19.
Every time the step mode is changed, the electrical position (i.e. the point of microstepping
sinewave that is generated) is reset to the first microstep.
Any attempt to write the register when the motor is running causes the command to be
ignored and the NOTPERF_CMD flag to rise (see
When when SYNC_EN bit is set low, BUSY/SYNC output is forced low during the
commands execution, otherwise, when the SYNC_EN bit is set high, the BUSY/SYNC
output provides a clock signal according to the SYNC_SEL parameter.
SYNC_EN
Warning:
0
0
0
0
1
Bit 7
STEP_MODE register
Step mode selection
STEP_SEL[2..0]
Every time STEP_SEL is changed the value in the ABS_POS
register looses meaning and should be reset.
Bit 6
X
0
0
1
1
SYNC_SEL
Doc ID 022729 Rev 1
Bit 5
0
1
X
0
1
Bit 4
Full-step
Half-step
1/4 microstep
1/8 microstep
1/16 microstep
Section
Bit 3
1
(1)
9.1.19).
Bit 2
Step mode
STEP_SEL
Bit 1
Bit 0
L6472