In reply to chr_sue:
The scenario i am working is neither of the two u pointed. my Uart rtl is transmitting some frame to my VIP. say its working in fifo mode and the interrupt trigger is configured at say on receiving 4 frames.
Here my VIP will be having a receiver agent, the frames are sampled by my receiver agent monitor and after getting all the four frames, now i wish to assert an interrupt. which i am intending to drive using event triggering. i will trigger an event in my monitor after completing my reception and and in my driver i will be waiting for this event to occur. as soon as i get the event triggered in monitor, i will drive interrupt_out from my VIP as 1.