TMS320F28377D: TZCTL2[TZAU,TZAD,TZBU,TZBD]

Part Number: TMS320F28377D

Hi,

I can get what defines by DCAEVT2U/D and DCAEVT1U/D using TZCTL2 and TZCTLDCx.

But I got nothing as desired when I use TZxU/TZxD. When the TZFLAG is set, the PWM are not what defined by TZxU(set) and TZxD(clr). Only one of TZxU or TZxD works.

Is there any special considerations? What do I probably miss?

-------------My configurations---------

1. Both TZSEL[OST1] with input and TZFRC[OST1] are tried to set TZOSTFLG or TZCBCFLG(target).     All values in TZCLR[CBCPULSE] are also tried for TZCBC.

2. TZCTL2.bit.ETZE=1.  I do notice this definition.   

3. TZAU=1(High); TZAD=2(Low);

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Thanks very much!