Part Number: TMS320F280049C
Hi expert,
My customer want to use PWM shift 180 celgree to expand the PWM signal.
they achieve the function and want to add the TZ signal then trip the expanded PWM signal.
They route the PWM_OE signal to CLB OUTPUTXBAR. But they can not see the PWM_OE on GPIO.
They test the TZ signal of PWM1. The TZ signal can normally turn off the output of PWM1 by hardware, but the output of CLB cannot be turned off. By checking the OE signal of CLB, they find that the OE signal is always high, even if TZ occurs, the OE signal is still high. Details are as follows:
The OE signal captured by the oscilloscope is always high, so when TZ occurs, the CLB output will not be pulled low
they test TZ1 and TZ2. So my question is PWM1_OE is what signal? TZ1 or TZ2 or some combination output?
In their PWM code, they enable TZ1,TZ2 and TZ3.
do you have any idea on the CLB generate PWM and also integrate TZ function.
since my customer need phase shift, so it have daley for TZ on expanded PWM. But acturally, they need immediate shut down.
BR
Emma
