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UART with FIFO Buffer MegaCore Function User Guide
GettingSpecifications
The AHB slave interface offers higher performance, because primarily it
operates with one wait state (compared to zero wait states for the
peripheral slave interface), which allows you to register the hrdata
output.
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You can add external logic to the low-level peripheral slave
interface to provide one-wait state behavior.
The cores \lib directory contains a class.ptf file that shows the peripheral
technology file (PTF) settings for the bus interface as an AHB slave
interface and a low-level peripheral slave interface.
In an AMBA system a simple peripheral such as a UART has an AMBA
peripheral bus (APB) interface. If you want to standardize on an APB
interface, you can make the peripheral slave interface behave like an APB
interface using minimal external logic.
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Specifications
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