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CCS/TMS320F28377D: X-BAR Configuration for 2 DSP synchronization

Yizhe Xu
Prodigy 45 points

Part Number: TMS320F28377D

Tool/software: Code Composer Studio

Hi everyone, 

I need to synchronize two 28377D DSPs to control multiple devices. I plan to use OutputXbar of DSP1 to output the EPWM1SYNCO signal to a GPIO and directly connected to a GPIO of DSP2 as the InputXbar5 for EXTSYNCIN1.

For CPU2, seems I need to assign the GPIO and set it at INPUT5SELECT Register, anything else need to be configured if I set the ePWM1 of DSP2 referenced to the EXTSYNCIN1?

For CPU1, how do I configure the OutputXbar to output EPWM1SYNCO signal? Cannot find example code. 

Thank you for everyone's idea and advice.