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opexsys
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1 hour ago

AVST FIFO and AVST Demultiplexer IP Simulation Behavior

Hi,  

I am using Quartus version 25.3. I simulated 2 IP's independently and had questions about their behavior.  

1. For the Avalon Streaming (AVST) Demultiplexer IP (figure 1) , is there a reason why the endofpacket (eop) signal remains asserted after the packet leaves the output, when I simulate with packet support (figure 2)? Is this normal? AVST Demultiplexer IP version 19.3.1. 

2. For the AVST SC FIFO  (Figure 3) , is there a reason the negative edge of output eop is unknown (red) (Figure 4)? Is this normal? AVST SC FIFO version 19.3.2. 

Thank you for the help! 

AVST Demultiplexer Parameters: 

AVST Demultiplexer Waveform:

 

AVST SC FIFO Parameters:



AVST SC FIFO Waveform:

 

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