TI中文支持网1、F280049没找到外部TZ引脚。
2、输入X-BAR的INPUT1的输出到底是TZ1还是TRIP1。作为TRIP1时知道怎么用，作为TZ1时不会用。
Susan Yang：
sprui33d.pdf
18.9 Trip-Zone (TZ) Submodul
Each ePWM module is connected to six TZn signals ( TZ1 to TZ6). TZ1 to TZ3 are sourced from the GPIO mux. TZ4 is sourced from an inverted EQEPxERR signal on those devices with an EQEP module. TZ5 is connected to the system clock fail logic, and TZ6 is sourced from the EMUSTOP output from the CPU.
2 Note: When configuring the GPIOs and INPUT X-BAR/EPWM X-BAR options, be aware that a change in the X-BAR input selections may cause an unwanted event. Therefore, ideally, the user will set up the GPIO and X-BAR input configurations before enabling the ePWM Trip-Zone. If it is a requirement to change the GPIO/X-BAR configurations while the ePWM Trip-Zone is enabled, the user can turn off the TRIPs by clearing the TZSEL register and re-configuring the TRIP selection (TZSEL) after the INPUT XBAR selection is changed.
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Susan Yang：
请您先参考下上面的回复，用户手册讲解的比较详细
