When I send transactions to my AXI slave NAP in my design, I get the following simulation errors:
SimulError: at 364750 : Axi FIXED bursts are not supported if axi.useFixed is False
Why do I see this error?
The Speedster7t network on chip (NoC) supports AXI burst transactions using one of two modes:
- INCR (incrementing addresses), or;
- WRAP (incrementing addresses that wrap back to 0).
These AXI-4 modes are controlled by the
arburst signal for read transactions and
awburst signal for write transactions. These signals are defined within the standard as follows:
Therefore, you must ensure that your
arburst signal and
awburst signal to the AXI slave NAP are driven as either
2'b10. A value of
2'b11 is not supported.