4.2.11. 1000BASE-X/SGMII PCS Reset
In PCS variations with embedded PMA, assert the respective reset signals or the power-down signal to trigger a hardware reset. You must assert the reset signal subsequent to asserting the reset_rx_clk, reset_tx_clk, or gxb_pwrdn_in signal. The reset sequence is also initiated when the active-low rx_freqlocked signal goes low.
For more information about the rx_freqlocked signal and transceiver reset, refer to the transceiver handbook of the respective device family.
Assert the reset or gxb_pwrdn_in signals to perform a hardware reset on MAC with PCS and embedded PMA variation.
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