DSP28035 EPWM1SYNCO set to disable

Thank you for your reply。

 DSP28035 EPWM1SYNCI   Input square wave signal. When the high-level time of the square wave signal is less than 3.8us, EPWM1SYNCO will output a Pulse on the rising edge; when the high-level time of the square wave signal is greater than 3.8us, the Pulse signal will lag; if the square wave signal is high Continue to increase, will generate multiple Pulse. why?

What is the width requirement of the EPWM1SYNCI input signal Pulse?

Thanks 

Hi,

SYNCI timing requirements are specified in the data sheet (http://www.ti.com/lit/ds/symlink/tms320f28035.pdf).
Refer to Table 6-50. ePWM Timing Requirements
If you are not using any GPIO filter/qualification on the SYNCI input - it should be a minimum of 2 System Clock cycles.

user1388828 said:

square wave signal is greater than 3.8us, the Pulse signal will lag; if the square wave signal is high Continue to increase, will generate multiple Pulse

This is not expected behavior. SyncOut Pulse should be generated on the rising edge of the incoming Synci signal only.
Can you share your SynI and Synco configuration?