wire [7:0] rx_data, tx_data;
wire tx_clk, tx_valid, tx_error, tx_ack;
wire rx_clk, rx_valid, rx_error, rx_ack;
wire [47:0] ucast_addr, mcast_addr;
wire pass_ucast, pass_mcast, pass_bcast, pass_pause, pass_all;
wire [7:0] rx_data, tx_data;
wire tx_clk, tx_valid, tx_error, tx_ack;
wire rx_clk, rx_valid, rx_error, rx_ack;
wire [47:0] ucast_addr, mcast_addr;
wire pass_ucast, pass_mcast, pass_bcast, pass_pause, pass_all;