There is a signal called ff_tx_rdy between the Triple Speed Ethernet (TSE) Megafunction's transmit FIFO block and the system. Please tell me under what conditions this signal will be deasserted.

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There is a signal called ff_tx_rdy between the transmit FIFO block of the Triple Speed Ethernet (TSE) Megafunction and the system. Under what conditions will this signal be deasserted?

ff_tx_rdy is deasserted when ff_tx_a_full is asserted, which means that the transmit FIFO has reached almost full condition.

Since ff_tx_a_full is a flag signal for the transmission FIFO, it is used for monitoring purposes.
ff_tx_rdy is used as a ready signal for the Avalon-ST interface to back pressure the transmitter (data transfer stop signal).

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