Texas Instruments DRV2605EVM-CT Datenbogen
SLOS825C – DECEMBER 2012 – REVISED SEPTEMBER 2014
7.6.1 Status (Address: 0x00)
Figure 28. Status Register
7
6
5
4
3
2
1
0
DEVICE_ID[2:0]
Reserved
DIAG_RESULT
FB_STS
OVER_TEMP
OC_DETECT
RO-0
RO-1
RO-1
RO-0
RO-0
RO-0
RO-0
Table 4. Status Register Field Descriptions
BIT
FIELD
TYPE
DEFAULT
DESCRIPTION
7-5
DEVICE_ID[2:0]
RO
3
Device identifier. The DEVICE_ID bit indicates the part number to the user.
The user software can ascertain the device capabilities by reading this
register.
The user software can ascertain the device capabilities by reading this
register.
4: DRV2604 (contains RAM, does not contain licensed ROM library)
3: DRV2605 (contains licensed ROM library, does not contain RAM)
6: DRV2604L (low-voltage version of the DRV2604 device)
7: DRV2605L (low-voltage version of the DRV2605 device)
4
Reserved
3
DIAG_RESULT
RO
0
This flag stores the result of the auto-calibration routine and the diagnostic
routine. The flag contains the result for whichever routine was executed
last. The flag clears upon read. Test result is not valid until the GO bit self-
clears at the end of the routine.
routine. The flag contains the result for whichever routine was executed
last. The flag clears upon read. Test result is not valid until the GO bit self-
clears at the end of the routine.
Auto-calibration mode:
0: Auto-calibration passed (optimum result converged)
1: Auto-calibration failed (result did not converge)
Diagnostic mode:
0: Actuator is functioning normally
1: Actuator is not present or is shorted, timing out, or giving
out–of-range back-EMF
out–of-range back-EMF
2
FB_STS
RO
0
Contains status for the feedback controller. This indicates when the ERM
back-EMF has been zero for more than ~10 ms in ERM mode, and
indicates when the LRA frequency tracking has lost frequency lock in LRA
mode. This bit is for debug purposes only, and may sometimes be set
under normal operation when extensive braking periods are used. This bit
will clear upon read.
back-EMF has been zero for more than ~10 ms in ERM mode, and
indicates when the LRA frequency tracking has lost frequency lock in LRA
mode. This bit is for debug purposes only, and may sometimes be set
under normal operation when extensive braking periods are used. This bit
will clear upon read.
0: Feedback controller has not timed out
1: Feedback controller has timed out
1
OVER_TEMP
RO
0
Latching overtemperature detection flag. If the device becomes too hot, it
shuts down. This bit clears upon read.
shuts down. This bit clears upon read.
0: Device is functioning normally
1: Device has exceeded the temperature threshold
0
OC_DETECT
RO
0
Latching overcurrent detection flag. If the load impedance is below the
load-impedance threshold, the device shuts down and periodically attempts
to restart until the impedance is above the threshold.
load-impedance threshold, the device shuts down and periodically attempts
to restart until the impedance is above the threshold.
0: No overcurrent event is detected
1: Overcurrent event is detected
32
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