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CCS/TMS320C6678: SRIO transfer done to trig a LSU interrupt

Part Number: TMS320C6678

Tool/software: Code Composer Studio

Hello TI experts,

C6678 Core0, DirectIO mode SRIO to a slave FPGA. I'd like to generate an interrupt to DSP when write/read is done.

In my application, I think I should use LSU interrupt. What I guess is about  LSU0_ICSR: ICS0 – SRCID0, Transaction complete, No Errors.

That's a general interrupt but not a dedicated doorbell interrupt.

However, I can only see system event input No.20 INTDST(n+16), which means doorbell interrupt.

How can I map the LSU interrupt to one of the 12 CPUINT?

Please correct me if I am wrong.

Thank you.

Peijun