TMS320F28379D: Xbar output connections

Rohit Baranwal

Hi, I am unsure as to which GPIO pins do the 8 Xbar outputs connect to. The ePWM Xbar outputs seem straightforward, they would connect to respective number ePWM module, correct? But it is not clear what the Xbar outputs connect to. For example, what GPIO pin does the XBAR3 output connect to?

over 7 years ago

0 Vivek Singh over 7 years ago

TI__Guru** 116981 points

Rohit,

This info is provided in pinmux section in device datasheet. Please refer "Table 4-3. GPIO Muxed Pins(1)(2)" and look for OUPUTXBAR mapping.

Regards,

Vivek Singh

0 Rohit Baranwal over 7 years ago in reply to Vivek Singh

Expert 1025 points

Ok, thanks. I found it. But, ePWM1 Xbar goes to ePWM1 only and so on, correct? Or can ePWM Xbar1 go to any ePWM module?

0 Nima Eskandari over 7 years ago in reply to Rohit Baranwal

TI__Guru 52200 points

Here is what EPWM XBAR does:

You have ONE ePWM XBAR module. It has its inputs, which comes from different places on the chip, you combine them and can create 8 outputs from the ePWM XBAR. These 8 outputs can be used by any of the PWM modules as TRIPxIN for their TZ module.

OUTPUT XBAR is the same, except instead of the 8 outputs going to all PWM modules, they can go to GPIOs and be output on the pins.

Nima Eskandari

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28379D: Xbar output connections