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Ixiasoft
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Ixiasoft
10.2.10. Over-run/Under-run Conditions
Consistent with UART implementation in PC16550D, the soft UART will not implement over-run or under-run prevention on the Avalon® -MM interface.
Preventing over-runs and under-runs on the Avalon® -MM interface by back-pressuring a pending transaction may cause more harm than good as the interconnect can be held up by the far slower UART.