描述

在设计中将事务发送到AXI从属NAP时，出现以下模拟错误：

SimulError: at 364750 : Axi 固定 bursts are not supported if axi.useFixed is False

为什么会看到此错误？

回答

Speedster7t片上网络（NoC）使用以下两种模式之一七星彩票appAXI突发事务：

• INCR（递增地址），或；
• 包（递增的地址返回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'b01, or 2'b10.  A value of 2'b00 or 2'b11 is not supported.