Tooth Generator eTPU Function
freescale semiconductor
Automotive
eTPU Function Set
The Tooth Generator eTPU function is intended to generate signals to engine position driver for development and test purposes.

The Tooth Generator provides a continuous output signal which mimics the pattern of the signal from a missing tooth detector on an automobile (crank signal). The Generator produces a 360 degree repeating pattern of teeth with a gap of missing teeth. The Generator features a selectable tooth count, missing tooth count, tooth period, a new tooth period, and a programmable rate of period change from the current period to the new period, as well as several ways to mimic various types of signal pattern errors and noise.

The Tooth Generator also provides a 720 degree single lobe cam output on a selected channel (cam signal), with selectable start and stop angle for the cam pulse.


Crank Signal
 
Cam Signal
Signal Parameters (changes apply after "OFF-ON") :


%
 

Error Mimics:





µs
µs
 



µs
µs


Freescale Semiconductor, Inc. 2006.
eTPU Product Summary Page