* Seems like a useless feature. Why autogenerate the transactions at the transmit side. This should always be done at the receive side to minimize bits moving across the link. Can't really see a use for it anymore so I am removing it.
* If you want to hack the design to reduce latency, you can always grab the raw etx_core and drive signals directly through write port.
* May consider adding a fourth port to etx to allow bypassing the link interfac?
* Add an ifdef to bypass the fifos?
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