AN2577 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'AN2577' PDF : 34 Pages View PDF
AN2577
System design
Note:
Asserting HOLD will always subtract exactly one tooth from the TCR2 angle count. The
correction is made by stopping the count, and the angle count does not decrement or repeat
any count.
3.5
Tooth circuit failure
If the tooth circuit fails and the failure is detected by the host, the software may implement a
limp home strategy. The eTPU angle clock provides a method to disconnect the angle clock
system from the Channel 0 input so that spurious signals from the tooth circuit will not
disrupt the limp home system. In that event, the host may configure the eTPU such that
Channel 0 continues to monitor the tooth circuit for diagnostic purpose. See the Reference
Manual for details.
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