Datasheet

TMC2209 DATASHEET (Rev. 1.03 / 2019-JUN-26) 29
www.trinamic.com
5.5 Chopper Control Registers
DRIVER REGISTER SET (0X6C…0X7F)
R/W
Addr
n
Register
Description / bit names
Range [Unit]
RW
0x6C
32
CHOPCONF
Chopper and driver configuration
See separate table!
Reset default=
0x10000053
R
0x6F
32
DRV_
STATUS
Driver status flags and current level read
back
See separate table!
RW
0x70
22
PWMCONF
StealthChop PWM chopper configuration
See separate table!
Reset default=
0xC10D0024
R
0x71
9+8
PWM_SCALE
Results of StealthChop amplitude regulator.
These values can be used to monitor
automatic PWM amplitude scaling (255=max.
voltage).
bit 7… 0
PWM_SCALE_SUM:
Actual PWM duty cycle. This
value is used for scaling the
values CUR_A and CUR_B read
from the sine wave table.
0…255
bit 24… 16
PWM_SCALE_AUTO:
9 Bit signed offset added to the
calculated PWM duty cycle. This
is the result of the automatic
amplitude regulation based on
current measurement.
signed
-255…+255
R
0x72
8+8
PWM_AUTO
These automatically generated values can be
read out in order to determine a default /
power up setting for PWM_GRAD and
PWM_OFS.
bit 7… 0
PWM_OFS_AUTO:
Automatically determined offset
value
0…255
bit 23… 16
PWM_GRAD_AUTO:
Automatically determined
gradient value
0…255