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/*
 *       top.v
 *
 *       Copyright (C) 2018, 2019, 2020, 2021 Mind Chasers Inc.
 *       
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *   
 *   Private Island Top for Darsena / ECP5UM
 *
 */
 
 `include "directives.v"

module top(
	input  rstn,

	// REFCLK
	input refclkp_d0, refclkn_d0, 
	input refclkp_d1, refclkn_d1,

	// SGMII0
	input	sgmii0_hdinp,
	input	sgmii0_hdinn,
	output	sgmii0_hdoutp,
	output	sgmii0_hdoutn,
	
	// SGMII1
	input	sgmii1_hdinp,
	input	sgmii1_hdinn,
	output	sgmii1_hdoutp,
	output	sgmii1_hdoutn,
	
	// SGMII2
	input	sgmii2_hdinp,
	input	sgmii2_hdinn,
	output	sgmii2_hdoutp,
	output	sgmii2_hdoutn,
	
	// SGMII3
	input	sgmii3_hdinp,
	input	sgmii3_hdinn,
	output	sgmii3_hdoutp,
	output	sgmii3_hdoutn,
	
	// PHYs
	output phy_mdc,
	
	output phy0_resetn,
	inout phy0_mdio,
	input [1:0] phy0_gpio,
	input phy0_intn,
	
	output phy1_resetn,
	inout phy1_mdio,
	input [1:0] phy1_gpio,
	input phy1_intn,
	
	// Microcontroller SPI and bit banging
	input spi_cs,
	input spi_clk,
	output spi_miso,
	input spi_mosi,
	output fpga_int,
	input  fpga_gpio,
	
	// I2C
	inout i2c_scl,
	inout i2c_sda,

	// K02 UART
	input uart_txd,
	output uart_rxd,
	
`ifdef DARSENA_V02
	output fpga_jtag_e,
	// FTDI UART signals muxed with JTAG
	input ftdi_tck_txd,
	output ftdi_tdi_rxd,
`endif

    output [2:0] led,
	
    // Arduino Compatible GPIO
    inout ard_sda,
    inout ard_scl,
    inout ard_rxd1,
    inout ard_txd1,
    inout ard_rxd2,
    inout ard_txd2,
    inout ard_rxd3,
    inout ard_txd3,
    inout pe0,		// 
    inout pe1,		// 
    inout pe3,
    inout pe4,
    inout pe5,
    inout pg5,
    inout ph3,		// UART RX for SFP Testing
    inout ph4,		// UART TX for SFP Testing
    inout [9:0] pa  
);
	


`include "sgmii_params.v"
`include "ethernet_params.v"

/* PARAMS */
localparam MDIO_ROM_ADDR_SZ = 7;

/* nets and variables */

// clocks
wire 	clk_slow, clk_1_25, clk_10, clk_20;
wire 	clk_100;
wire 	refclko;

// pulses
wire pulse_10ms, pulse_1_6ms;

// misc resets
wire [3:0] phy_resetn;	// bit[0] will get pruned out for now
wire [3:0] mac_reset;

// dcu resets
wire [1:0] pcs_rst_dual;
wire [1:0] serdes_rst_dual;
wire [1:0] tx_serdes_rst;	

// channel resets
wire [3:0] rx_pcs_rst;
wire [3:0] rx_serdes_rst;
wire [3:0] tx_pcs_rst;

// MDIO controller and driver
wire mdio_cont_work_start, mdio_cont_work_run;
wire mdio_cont_work_done;
wire [MDIO_ROM_ADDR_SZ-1:0] mdio_routine_addr;
wire [1:0] mdio_mux_sel;
wire mdio_done, mdo_oe;
wire mdo;
reg mdi;
wire [15:0] mdio_wd;
wire [15:0] mdio_rd;
wire [4:0] mdio_reg_addr;
wire mdio_ld, mdio_run;
wire mdio_rwn;
wire bin_to_ascii_run;

`ifdef SHIELD_GIGE_SMA
	wire phy2_resetn, phy2_mdc;
	wire phy2_mdio_o, phy2_mdio_i, phy2_mdio_oe;
`elsif SHIELD_SFP_SMA
	wire sfp_los, sfp_rate_select, sfp_pres_n, sfp_i2c_scl, sfp_tx_fault, sfp_tx_disable, sfp_i2c_sda;
`endif

// MDIO Data block
wire [MDIO_ROM_ADDR_SZ-1:0] rom_a;
wire [7:0] rom_d;
wire [4:0] mdio_reg_addr_set;
wire [7:0] mdio_w_data_h_set, mdio_w_data_l_set;
wire [4:0] mdio_page_set;

// I2C
wire sda_oe, scl_oe, sda_o, scl_o;

// bin to ASCII
wire [15:0] bin_to_ascii_d_in;
wire [6:0] cont_rd;
wire read_fifo_we;
wire [8:0] fifo_r_d;

// PCS, mac
wire pcs_pclk;
wire [1:0] pll_lol;
wire sgmii_rx_k[0:3], sgmii_tx_k[0:3];
wire sgmii_tx_disp_correct[0:3];
wire sgmii_rx_cv_err[0:3], sgmii_rx_disp_err[0:3], sgmii_rx_cdr_lol[0:3];
wire sgmii_lsm_status[0:3], sgmii_rx_los_low[0:3];
wire [7:0] rx_data0, rx_data1, rx_data2, rx_data3;
wire [7:0] tx_data0, tx_data1, tx_data2, tx_data3;
wire [6:0] read_fifo_d_i;
wire [3:0] rx_sample;
wire [3:0] pcs_error;

// ipv4
wire [3:0] ipv4_pkt_start;
wire [3:0] ipv4_pkt_complete;

reg cont_fifo_re_m1, cont_fifo_re_m2;
wire cont_fifo_empty;
wire i2c_fifo_re;
wire i2c_cont_we, i2c_cont_done;
wire i_cont_fifo_re;	
wire bin_to_ascii_we, mdio_rd_we, cont_rd_we;	
wire [3:0] phy_up;

// Interrupts
wire [6:0] int_do;
wire [3:0] mac_int;
wire int_sel;

// Common Internal Memory Bus
wire[10:0] mem_addr;
wire [8:0] mem_d_i;
reg [8:0] mem_d_o;
wire mem_we, mem_oe;
wire [4:0] mem_do_mux_sel;

// DPRAM
wire [10:0] param_phy0_addr, param_phy1_addr, param_phy2_addr, param_phy3_addr;
wire [8:0] param_phy0_din, param_phy1_din, param_phy2_din, param_phy3_din;
wire [8:0] param_phy0_dout, param_phy1_dout, param_phy2_dout, param_phy3_dout;
wire param_phy0_ce, param_phy1_ce, param_phy2_ce, param_phy3_ce;
wire param_phy0_we, param_phy1_we, param_phy2_we, param_phy3_we;
wire [8:0] param_ram_0_do, param_ram_1_do, param_ram_2_do, param_ram_3_do;

wire [7:0] i2c_d_o;
wire [8:0] micro_fifo_do;
wire sys_mem_rx_ce, sys_mem_tx_ce, sys_mem_ptrs_sel;
wire [3:0] param_sel;

// drop_fifos and filter
wire rx0_k_m1, rx0_k_m2, rx0_k_m3, rx0_k_m4;
wire [7:0] rx0_data_m1, rx0_data_m2, rx0_data_m3, rx0_data_m4;

wire rx1_k_m1, rx1_k_m2, rx1_k_m3, rx1_k_m4;
wire [7:0] rx1_data_m1, rx1_data_m2, rx1_data_m3, rx1_data_m4;

wire rx2_k_m1, rx2_k_m2, rx2_k_m3, rx2_k_m4;
wire [7:0] rx2_data_m1, rx2_data_m2, rx2_data_m3, rx2_data_m4; 

wire rx3_k_m1, rx3_k_m2, rx3_k_m3, rx3_k_m4;
wire [7:0] rx3_data_m1, rx3_data_m2, rx3_data_m3, rx3_data_m4; 

wire [3:0] rx_mac_keep;
wire [3:0] rx_sc_wr_done;

// drop filter outputs
wire rx_df_fifo_we_01, rx_df_fifo_we_02, rx_df_fifo_we_03;
wire rx_df_fifo_we_10, rx_df_fifo_we_12, rx_df_fifo_we_13;
wire rx_df_fifo_we_20, rx_df_fifo_we_21, rx_df_fifo_we_23, rx_df_fifo_we_2u;
wire rx_df_fifo_we_30, rx_df_fifo_we_31, rx_df_fifo_we_32;
wire rx_df_fifo_we_u2;

wire [8:0]  rx_df_fifo_d_01, rx_df_fifo_d_02, rx_df_fifo_d_03; 
wire [8:0]  rx_df_fifo_d_10, rx_df_fifo_d_12, rx_df_fifo_d_13; 
wire [8:0]  rx_df_fifo_d_20, rx_df_fifo_d_21, rx_df_fifo_d_23, rx_df_fifo_d_2u; 
wire [8:0]  rx_df_fifo_d_30, rx_df_fifo_d_31, rx_df_fifo_d_32;
wire [8:0]  rx_df_fifo_d_u2;

// pkt filter
wire [3:0] trigger;
wire [3:0] rx_enet_bcast;
wire [3:0] rx_ipv4_arp;
wire rx_pf_keep_01;
wire rx_pf_keep_02;
wire rx_pf_keep_03;
wire rx_pf_keep_10;
wire rx_pf_keep_12;
wire rx_pf_keep_13;
wire rx_pf_keep_20;
wire rx_pf_keep_21;
wire rx_pf_keep_23;
wire rx_pf_keep_2u;
wire rx_pf_keep_30;
wire rx_pf_keep_31;
wire rx_pf_keep_32;
wire rx_pf_keep_u2;

// rx_fifos
wire [3:0] rx_sc_fifo_we;
wire rx_sw_fifo_re_01, rx_sw_fifo_re_02, rx_sw_fifo_re_03;
wire rx_sf_fifo_empty_01, rx_sf_fifo_empty_02, rx_sf_fifo_empty_03;
wire rx_sw_fifo_re_10, rx_sw_fifo_re_12, rx_sw_fifo_re_13;
wire rx_sf_fifo_empty_10, rx_sf_fifo_empty_12, rx_sf_fifo_empty_13;
wire rx_sw_fifo_re_20, rx_sw_fifo_re_21, rx_sw_fifo_re_23, rx_sw_fifo_re_2u;
wire rx_sf_fifo_empty_20, rx_sf_fifo_empty_21, rx_sf_fifo_empty_23, rx_sf_fifo_empty_2u;
wire rx_sw_fifo_re_30, rx_sw_fifo_re_31, rx_sw_fifo_re_32;
wire rx_sf_fifo_empty_30, rx_sf_fifo_empty_31, rx_sf_fifo_empty_32;
wire rx_sw_fifo_re_u2, rx_uc_fifo_empty_u2;
wire [8:0] rx_sc_fifo_d0, rx_sc_fifo_d1, rx_sc_fifo_d2, rx_sc_fifo_d3;
wire [8:0] rx_sf_fifo_d_01, rx_sf_fifo_d_02, rx_sf_fifo_d_03;
wire [8:0] rx_sf_fifo_d_10, rx_sf_fifo_d_12, rx_sf_fifo_d_13;
wire [8:0] rx_sf_fifo_d_20, rx_sf_fifo_d_21, rx_sf_fifo_d_23, rx_sf_fifo_d_2u;
wire [8:0] rx_sf_fifo_d_30, rx_sf_fifo_d_31, rx_sf_fifo_d_32;
wire [8:0] rx_uc_fifo_d_u2;
wire rx_sf_almost_full_01, rx_sf_almost_full_02, rx_sf_almost_full_03;
wire rx_sf_almost_full_10, rx_sf_almost_full_12, rx_sf_almost_full_13;
wire rx_sf_almost_full_20, rx_sf_almost_full_21, rx_sf_almost_full_23;
wire [2:0] tx_src_sel0, tx_src_sel1, tx_src_sel2, tx_src_sel3;


// between switch and mac
wire [8:0] tx_sw_fifo_d0, tx_sw_fifo_d1, tx_sw_fifo_d2, tx_sw_fifo_d3, tx_sw_fifo_du;
wire [3:0] tx_sc_fifo_re;
wire tx_uc_fifo_re;
wire [3:0] tx_sw_fifo_empty;
wire tx_sw_fifo_we;

wire [2:0] tx_sw_mode0, tx_sw_mode1, tx_sw_mode2, tx_sw_mode3;
wire tx_sw_modeu;
wire [3:0] tx_sc_done;

// 100 Mbit
wire[3:0] mode_100Mbit;

wire pkt_filter_sel_01, pkt_filter_sel_02, pkt_filter_sel_03;
wire pkt_filter_sel_10, pkt_filter_sel_12, pkt_filter_sel_13;
wire pkt_filter_sel_20, pkt_filter_sel_21, pkt_filter_sel_23, pkt_filter_sel_2u;
wire pkt_filter_sel_u2;

// FCS
wire [1:0] fcs_addr0, fcs_addr1, fcs_addr2, fcs_addr3;
wire [7:0] fcs_din0, fcs_din1, fcs_din2, fcs_din3;
wire [7:0] fcs_dout0, fcs_dout1, fcs_dout2, fcs_dout3;
wire[3:0] fcs_init, fcs_enable;

// half FIFO / DPRAM interface for uP
wire hfifo_we, hfifo_re; 
wire [8:0] hfifo_tx_d, hfifo_rx_d;
wire hfifo_empty;
wire micro_fifo_int;
wire tx_uc_block;
	
// SCI
wire[1:0] sci_sel_dual;
wire[3:0] sci_sel_ch;
wire[7:0] sci_rddata0, sci_rddata1 ;
wire[1:0] sci_int;

// Metrics
wire tx_custom, metrics_start;
wire [8:0] metrics_d;

// Network Debug & Metrics
reg [3:0] rx_active, tx_active;
wire [3:0] mac_rx_active;
wire [3:0] drop_rx0_active, drop_rx1_active, drop_rx2_active, drop_rx3_active;
wire [3:0] sync_rx0_active, sync_rx1_active, sync_rx2_active, sync_rx3_active;
wire [3:0] mac_tx_active;
wire [3:0] rx_sc_error;
wire [3:0] rx_eop, rx_sop;
wire [3:0] tx_eop, tx_sop;
wire [10:0] rx0_byte_cnt, rx1_byte_cnt, rx2_byte_cnt, rx3_byte_cnt;
wire [10:0] tx0_byte_cnt, tx1_byte_cnt, tx2_byte_cnt, tx3_byte_cnt;

// Debug LEDs
reg lsm_status, rx_cdr_lol, rx_los_low;

// Misc Debug
wire ext_sci_int;

/****************************
 * 
 *   Logic Begins Below 
 *   
 ***************************/

/* Lattice requires GSR to be in top-level module and be named GSR_INST */
GSR GSR_INST(.GSR(rstn));
PUR PUR_INST(.PUR(1'b1));

assign phy_mdc = clk_10;

assign phy0_resetn = phy_resetn[0];
assign phy1_resetn = phy_resetn[1];

`ifdef SHIELD_GIGE_SMA
	assign phy2_resetn = phy_resetn[2];
	assign phy2_mdc = clk_10;
`elsif SHIELD_SFP_SMA
	assign sfp_tx_disable = 1'b0;
	assign sfp_i2c_scl = 1'b1;
	assign sfp_rate_select = 1'b1;
`endif

	
/* 
 * Clocks derived from the internal OSCG
 */
clk_gen clk_gen_0(
	.rstn( rstn ),
	.clk_10( clk_10 ),
	.clk_5( ),
	.clk_2_5( ),	
	.clk_1_25( clk_1_25 ),
	.clk_slow( clk_slow )
);


/* 
*   main controller
*   
*   controls worker blocks
*   interfaces with uC via I2C
*
*/      
controller #(.ADDR_SZ( MDIO_ROM_ADDR_SZ ))controller_0
(
	.rstn( rstn ),
	.clk( clk_10 ),
	.init(1'b1),
	.pulse_100ms( 1'b0 ),
	// PCS status lines
	.pcs_rx_error( pcs_error ),
	.pll_lol( pll_lol ),
	// link status
	.port_up( phy_up ),
//	.sfp_los(sfp_los),
	// mdio_controller interface
	.mdio_cont_start(mdio_cont_work_start),
	.mdio_cont_done(mdio_cont_work_done),
	.mdio_routine_addr( mdio_routine_addr ),
	.mdio_run( mdio_run ),
	// mdio_data params
	.mdio_page( mdio_page_set ),
	.mdio_reg_addr( mdio_reg_addr_set ),
	.mdio_w_data_h( mdio_w_data_h_set ),
	.mdio_w_data_l( mdio_w_data_l_set ),
	// bin_to_ascii interface
	.bin_to_ascii_run( bin_to_ascii_run ),
	// ext_sys_fifo interface: controller to external I/F FIFO
	.fifo_mux_sel( read_fifo_mux_sel ),
	.fifo_we( cont_rd_we ),
	.read_fifo_d_o( cont_rd ),
	// i2c interface
	.i2c_rx_we ( i2c_cont_we ),
	.i2c_rx_done ( i2c_cont_done ),
	.i2c_d_in( i2c_d_o ),
	// reset and config
	.pcs_rst_dual( pcs_rst_dual ),
	.serdes_rst_dual( serdes_rst_dual ),
	.tx_serdes_rst( tx_serdes_rst ),
	.phy_resetn( phy_resetn ),
	.mac_reset( mac_reset ),
	.tx_pcs_rst( tx_pcs_rst ),
	.rx_serdes_rst( rx_serdes_rst ),
	.rx_pcs_rst( rx_pcs_rst ),
	.mdio_mux_sel( mdio_mux_sel ),
	// TX custom packet
	.tx_custom( tx_custom )

);

/*
 * Controls the routing of data and transmit modes
 */
switch switch_0(
	.rstn( rstn ),
	.clk( pcs_pclk ),
	// PHY status
	.phy_up( phy_up ),
	.mode_100Mbit ( mode_100Mbit ),
	// FIFO input data from RX FIFOs
	.rx_d_01( rx_sf_fifo_d_01 ),
	.rx_d_02( rx_sf_fifo_d_02 ),
	.rx_d_03( rx_sf_fifo_d_03 ),
	.rx_d_10( rx_sf_fifo_d_10 ),
	.rx_d_12( rx_sf_fifo_d_12 ),
	.rx_d_13( rx_sf_fifo_d_13 ),
	.rx_d_20( rx_sf_fifo_d_20 ),
	.rx_d_21( rx_sf_fifo_d_21 ),
	.rx_d_23( rx_sf_fifo_d_23 ),
	.rx_d_2u( rx_sf_fifo_d_2u ),
	.rx_d_30( rx_sf_fifo_d_30 ),
	.rx_d_31( rx_sf_fifo_d_31 ),
	.rx_d_32( rx_sf_fifo_d_32 ),
	.rx_d_u2( rx_uc_fifo_d_u2 ),
	// RX FIFO read enables
	.rx_fifo_re_01( rx_sw_fifo_re_01 ),
	.rx_fifo_re_02( rx_sw_fifo_re_02 ),
	.rx_fifo_re_03( rx_sw_fifo_re_03 ),
	.rx_fifo_re_10( rx_sw_fifo_re_10 ),
	.rx_fifo_re_12( rx_sw_fifo_re_12 ),
	.rx_fifo_re_13( rx_sw_fifo_re_13 ),
	.rx_fifo_re_20( rx_sw_fifo_re_20 ),
	.rx_fifo_re_21( rx_sw_fifo_re_21 ),
	.rx_fifo_re_23( rx_sw_fifo_re_23 ),
	.rx_fifo_re_2u( rx_sw_fifo_re_2u ),
	.rx_fifo_re_30( rx_sw_fifo_re_30 ),
	.rx_fifo_re_31( rx_sw_fifo_re_31 ),
	.rx_fifo_re_32( rx_sw_fifo_re_32 ),
	.rx_fifo_re_u2( rx_sw_fifo_re_u2 ),
	// RX FIFO Empty flags
	.rx_fifo_empty_01( rx_sf_fifo_empty_01 ),
	.rx_fifo_empty_02( rx_sf_fifo_empty_02 ),
	.rx_fifo_empty_03( rx_sf_fifo_empty_03 ),
	.rx_fifo_empty_10( rx_sf_fifo_empty_10 ),
	.rx_fifo_empty_12( rx_sf_fifo_empty_12 ),
	.rx_fifo_empty_13( rx_sf_fifo_empty_13 ),
	.rx_fifo_empty_20( rx_sf_fifo_empty_20 ),
	.rx_fifo_empty_21( rx_sf_fifo_empty_21 ),
	.rx_fifo_empty_23( rx_sf_fifo_empty_23 ),
	.rx_fifo_empty_2u( rx_sf_fifo_empty_2u ),
	.rx_fifo_empty_30( rx_sf_fifo_empty_30 ),
	.rx_fifo_empty_31( rx_sf_fifo_empty_31 ),
	.rx_fifo_empty_32( rx_sf_fifo_empty_32 ),
	.rx_fifo_empty_u2( rx_uc_fifo_empty_u2 ),
	// RX Byte Count
	.rx_wr_done(rx_sc_wr_done),
	.rx0_byte_cnt(rx0_byte_cnt),
	.rx1_byte_cnt(rx1_byte_cnt),
	.rx2_byte_cnt(rx2_byte_cnt),
	.rx3_byte_cnt(rx3_byte_cnt),
	// TX FIFO output from internal muxes
	.tx_d0( tx_sw_fifo_d0),
	.tx_d1( tx_sw_fifo_d1 ),
	.tx_d2( tx_sw_fifo_d2 ),
	.tx_d3( tx_sw_fifo_d3 ),
	.tx_du( tx_sw_fifo_du ),
	// TX FIFO read enable inputs (need to route to RX output FIFOs)
	.tx_fifo_re( tx_sc_fifo_re ),
	.tx_fifo_we_u ( tx_sw_fifo_we ),
	// TX FIFO Empty Flags (need to route to RX output FIFOs)
	.tx_fifo_empty( tx_sw_fifo_empty ),
	// TX modes for the PHYs and uc
	.tx_mode0( tx_sw_mode0 ),
	.tx_mode1( tx_sw_mode1 ),
	.tx_mode2( tx_sw_mode2 ),
	.tx_mode3( tx_sw_mode3 ),
	.tx_modeu( tx_modeu ),
	// TX byte cnt
	.tx0_byte_cnt(tx0_byte_cnt),
	.tx1_byte_cnt(tx1_byte_cnt),
	.tx2_byte_cnt(tx2_byte_cnt),
	.tx3_byte_cnt(tx3_byte_cnt),
	// TX state machine done flag
	.tx_f( tx_sc_done ),
	// TX custom packet
	.tx_custom	( tx_custom )
);


/*
 * RX and TX controller logic tied to PCS/SGMII protocol
 */
mac mac_0(
	.rstn( ~mac_reset[0] ),
	.phy_resetn ( phy_resetn[0] ),
	.clk( pcs_pclk ),	
	.tap_port ( 1'b0 ),
	// PCS / SERDES health
	.rx_lsm( sgmii_lsm_status[0] ),
	.rx_cv_err ( sgmii_rx_cv_err[0] ),
	.rx_disp_err( sgmii_rx_disp_err[0] ),
	.rx_cdr_lol( sgmii_rx_cdr_lol[0] ),
	.rx_los ( sgmii_rx_los_low[0] ),
	//  AN
	.phy_type(2'b00),		// SGMII=0
	.pulse_1_6ms(pulse_1_6ms),
	.pulse_10ms(pulse_10ms),
	.fixed_speed(SGMII_SPEED_AN),
	.an_disable( 1'b0 ),
	.an_duplex(  ),
	.phy_up( phy_up[0] ),
	.mode_100Mbit( mode_100Mbit[0] ),
	// Switch I/F
	.tx_mode( tx_sw_mode0 ),
	.tx_f( tx_sc_done[0] ),
	// PCS data I/F
	.rx_k( sgmii_rx_k[0] ),
	.rx_data( rx_data0 ),
	.tx_k( sgmii_tx_k[0] ),
	.tx_data( tx_data0 ),
	.tx_disp_correct( sgmii_tx_disp_correct[0] ),
	// TX FCS
	.fcs_init( fcs_init[0] ),
	.fcs_enable( fcs_enable[0] ),
	.fcs_addr( fcs_addr0 ),
	.fcs_dout( fcs_din0 ),
	.fcs_din( fcs_dout0 ),
	// MAC RX / FIFO Write
	.rx_fifo_we( rx_sc_fifo_we[0] ),
	.rx_fifo_d( rx_sc_fifo_d0 ),
	.rx_error( rx_sc_error[0] ),
	.rx_keep( rx_mac_keep[0] ),
	.rx_wr_done( rx_sc_wr_done[0] ),
	.rx_byte_cnt(rx0_byte_cnt),
	.rx_mode(),
	// MAC TX / FIFO Read
	.tx_byte_cnt_i(tx0_byte_cnt),
	.tx_src_sel(tx_src_sel0),
	.tx_fifo_re( tx_sc_fifo_re[0] ),
	.tx_fifo_d( tx_sw_fifo_d0 ),
	.tx_fifo_empty( tx_sw_fifo_empty[0] ),
	// Packet Filter
	.rx_sample( rx_sample[0] ),
	.ipv4_pkt_start( ipv4_pkt_start[0] ),
	.trigger( ),
	.rx_k_m1( rx0_k_m1 ), 
	.rx_k_m2( rx0_k_m2 ), 
	.rx_k_m3( rx0_k_m3), 
	.rx_k_m4( rx0_k_m4 ),
	.rx_data_m1( rx0_data_m1 ), 
	.rx_data_m2( rx0_data_m2 ), 
	.rx_data_m3( rx0_data_m3), 
	.rx_data_m4( rx0_data_m4 ),
	// Param RAM
	.dpr_ad( param_phy0_addr ),
	.dpr_we( param_phy0_we ),
	.dpr_ce( param_phy0_ce ),
	.dpr_di( param_phy0_din ),
	.dpr_do( param_phy0_dout ),
	// Flags, Metrics, Interrupts, and Debug
	.rx_enet_bcast( rx_enet_bcast[0] ),
	.rx_ipv4_arp( rx_ipv4_arp[0] ),	
	.mac_int( mac_int[0] ),
	.rx_sop( rx_sop[0] ),
	.rx_eop( rx_eop[0] ),
	.tx_sop( tx_sop[0] ),
	.tx_eop( tx_eop[0] ),
	.metrics_start ( ),
	.metrics_d ( 9'h0 ),
	.rx_active( mac_rx_active[0] ),
	.tx_active( mac_tx_active[0] )
);


ipv4_rx ipv4_rx_0(
		.rstn( rstn ),
		.clk( pcs_pclk ),	
		// control
		.phy_resetn ( phy_resetn[0] ),
		.phy_up( phy_up[0] ),
		// packet data
		.pkt_start( ipv4_pkt_start[0] ),
		.rx_eop( rx_eop[0] ),
		.rx_data_m1( rx0_data_m1 ), 
		.rx_data_m2( rx0_data_m2 ), 
		.rx_data_m3( rx0_data_m3), 
		.rx_data_m4( rx0_data_m4 ),	
		// flags
		.pkt_complete(ipv4_pkt_complete[0]),
		.trigger_src_addr(  ),
		.trigger_dst_addr( trigger[0] ),
		.keep(  )
		);


pkt_filter pkt_filter_01(
		.rstn( rstn ),
		.clk( pcs_pclk ),
		// input for programming
		.sel( pkt_filter_sel_01 ),
		.we( mem_we ),
		.addr( mem_addr[3:0] ),
		.d_in( mem_d_i[7:0] ),
		// registered data
		.rx_data_m1( rx0_data_m1 ), 
		.rx_data_m2( rx0_data_m2 ), 
		.rx_data_m3( rx0_data_m3), 
		.rx_data_m4( rx0_data_m4 ),	
		// filter
		.new_frame ( rx_sop[0] ),
		.block( 1'b0 ),
		.invert( 1'b1 ),
		.trigger( trigger[0] ),
		.keep( rx_pf_keep_01 )
);

drop_fifo drop_fifo_01(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		.enable( 1'b1 ),
		// control
		.keep ( rx_pf_keep_01 | rx_mac_keep[0] ),
		.passthrough( 1'b0 ),
		// input
		.we_in( rx_sc_fifo_we[0] ),
		.wr_done( rx_sc_wr_done[0] ),
		.d_in( rx_sc_fifo_d0 ),
		// output
		.we_out( rx_df_fifo_we_01 ),
		.d_out( rx_df_fifo_d_01 ),
		// debug
		.active( drop_rx0_active[1] )
);
	
sync_fifo sync_fifo_rx_01(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		// input
		.we ( rx_df_fifo_we_01 & phy_up[1] ),
		.d_in ( rx_df_fifo_d_01 ),
		// output
		.re ( rx_sw_fifo_re_01 ),
		.d_out( rx_sf_fifo_d_01 ),
		.empty( rx_sf_fifo_empty_01 ),
		.almost_full(  ),
		.reset_ptrs( 1'b0 ),
		// debug
		.active( sync_rx0_active[1] )
);
	
pkt_filter pkt_filter_02(
		.rstn( rstn ),
		.clk( pcs_pclk ),
		// input for programming
		.sel( pkt_filter_sel_02 ),
		.we( mem_we ),
		.addr( mem_addr[3:0] ),
		.d_in( mem_d_i[7:0] ),
		// registered data
		.rx_data_m1( rx0_data_m1 ), 
		.rx_data_m2( rx0_data_m2 ), 
		.rx_data_m3( rx0_data_m3), 
		.rx_data_m4( rx0_data_m4 ),	
		// filter
		.new_frame ( rx_sop[0] ),
		.block( rx_sf_almost_full_02 ),
		.invert(1'b1),
		.trigger(trigger[0]),
		.keep( rx_pf_keep_02 )
);

drop_fifo drop_fifo_02(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		.enable( 1'b1 ),
		// control
		.keep ( rx_pf_keep_02 | rx_mac_keep[0] ),
		.passthrough( 1'b0 ),
		// input
		.we_in( rx_sc_fifo_we[0] ),
		.wr_done( rx_sc_wr_done[0] ),
		.d_in( rx_sc_fifo_d0 ),
		// output
		.we_out( rx_df_fifo_we_02 ),
		.d_out( rx_df_fifo_d_02 ),
		.active( drop_rx0_active[2] )
	);

sync_fifo sync_fifo_rx_02(
	.rstn( rstn ),
	.clk ( pcs_pclk ),
	// input
	.we ( rx_df_fifo_we_02 & phy_up[2] ),
	.d_in ( rx_df_fifo_d_02 ),
	// output
	.re ( rx_sw_fifo_re_02 ),
	.d_out( rx_sf_fifo_d_02 ),
	.empty( rx_sf_fifo_empty_02 ),
	.almost_full( rx_sf_almost_full_02 ),
	.reset_ptrs( 1'b0 ),
	// debug
	.active(sync_rx0_active[2]  )
);


pkt_filter pkt_filter_03(
		.rstn( rstn ),
		.clk( pcs_pclk ),
		// input for programming
		.sel( pkt_filter_sel_03 ),
		.we( mem_we ),
		.addr( mem_addr[3:0] ),
		.d_in( mem_d_i[7:0] ),
		// registered data
		.rx_data_m1( rx0_data_m1 ), 
		.rx_data_m2( rx0_data_m2 ), 
		.rx_data_m3( rx0_data_m3), 
		.rx_data_m4( rx0_data_m4 ),	
		// filter
		.new_frame ( rx_sop[0] ),
		.block( rx_sf_almost_full_03 ),
		.invert( 1'b0 ),
		.trigger( trigger[0] ),
		.keep( rx_pf_keep_03 )
	);

drop_fifo drop_fifo_03(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		.enable( 1'b0 ),
		// control
		.keep ( rx_pf_keep_03 | rx_mac_keep[0] ),
		.passthrough( 1'b0 ),
		// input
		.we_in( rx_sc_fifo_we[0] ),
		.wr_done( rx_sc_wr_done[0] ),
		.d_in( rx_sc_fifo_d0 ),
		// output
		.we_out( rx_df_fifo_we_03 ),
		.d_out( rx_df_fifo_d_03 ),
		.active( drop_rx0_active[3] )
	);

sync_fifo sync_fifo_rx_03(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		// input
		.we ( rx_df_fifo_we_03 & phy_up[3] ),
		.d_in ( rx_df_fifo_d_03 ),
		// output
		.re ( rx_sw_fifo_re_03 ),
		.d_out( rx_sf_fifo_d_03 ),
		.empty( rx_sf_fifo_empty_03 ),
		.almost_full( rx_sf_almost_full_03 ),
		.reset_ptrs( 1'b0 ),
		// debug
		.active( sync_rx0_active[3] )
	);

fcs fcs_0(
	.rstn( rstn ),
	.clk( pcs_pclk ),
	.init( fcs_init[0] ),
	.enable( fcs_enable[0] ), 
	.addr( fcs_addr0 ),
	.din( fcs_din0 ),
	.dout( fcs_dout0 )
);

/*
 * Param RAM
 */
dpram param_ram_0(
		.rstn(rstn),
		.a_clk(clk_10),
		.a_clk_e(param_sel[0]),
		.a_we(mem_we),
		.a_oe(mem_oe),
		.a_addr(mem_addr),
		.a_din(mem_d_i[8:0]),
		.a_dout(param_ram_0_do),
		// port B
		.b_clk( pcs_pclk),
		.b_clk_e(param_phy0_ce),
		.b_we(param_phy0_we),
		.b_oe( 1'b1  ),
		.b_addr( param_phy0_addr ),
		.b_din( param_phy0_dout ),
		.b_dout( param_phy0_din )
	);

mac mac_1(
	.rstn( ~mac_reset[1] ),
	.phy_resetn ( phy_resetn[1] ),
	.clk( pcs_pclk ),
	.tap_port ( 1'b0 ),
	// PCS / SERDES health
	.rx_lsm( sgmii_lsm_status[1] ),
	.rx_cv_err ( sgmii_rx_cv_err[1] ),
	.rx_disp_err( sgmii_rx_disp_err[1] ),
	.rx_cdr_lol( sgmii_rx_cdr_lol[1] ),
	.rx_los ( sgmii_rx_los_low[1] ),
	// AN
	.phy_type(2'b00),		// SGMII==0
	.pulse_1_6ms(pulse_1_6ms),
	.pulse_10ms(pulse_10ms),
	.fixed_speed(SGMII_SPEED_AN),
	.an_disable( 1'b0 ),
	.an_duplex(  ),
	.phy_up( phy_up[1] ),
	.mode_100Mbit( mode_100Mbit[1] ),
	// Switch I/F
	.tx_mode( tx_sw_mode1 ),
	.tx_f( tx_sc_done[1] ),
	// PCS data I/F
	.rx_k( sgmii_rx_k[1] ),
	.rx_data( rx_data1 ),
	.tx_k( sgmii_tx_k[1] ),
	.tx_data( tx_data1 ),
	.tx_disp_correct( sgmii_tx_disp_correct[1] ),
	// FCS
	.fcs_init( fcs_init[1] ),
	.fcs_enable( fcs_enable[1] ),
	.fcs_addr( fcs_addr1 ),
	.fcs_dout( fcs_din1 ),
	.fcs_din( fcs_dout1 ),
	// MAC RX / FIFO Write
	.rx_fifo_we(  rx_sc_fifo_we[1]  ),
	.rx_fifo_d( rx_sc_fifo_d1 ),
	.rx_error( rx_sc_error[1] ),
	.rx_keep( rx_mac_keep[1] ),
	.rx_wr_done( rx_sc_wr_done[1] ),
	.rx_byte_cnt(rx1_byte_cnt),
	.rx_mode(),
	// MAC TX / FIFO Read
	.tx_byte_cnt_i(tx1_byte_cnt),
	.tx_src_sel(tx_src_sel1),
	.tx_fifo_re( tx_sc_fifo_re[1] ),
	.tx_fifo_d( tx_sw_fifo_d1 ),
	.tx_fifo_empty( tx_sw_fifo_empty[1] ),
	// Packet Filter
	.rx_sample( ),
	.ipv4_pkt_start( ipv4_pkt_start[1] ),
	.trigger( ),
	.rx_k_m1( rx1_k_m1 ), 
	.rx_k_m2( rx1_k_m2 ), 
	.rx_k_m3( rx1_k_m3), 
	.rx_k_m4( rx1_k_m4 ),
	.rx_data_m1( rx1_data_m1 ), 
	.rx_data_m2( rx1_data_m2 ), 
	.rx_data_m3( rx1_data_m3), 
	.rx_data_m4( rx1_data_m4 ),
	// Param RAM
	.dpr_ad( param_phy1_addr ),
	.dpr_we( param_phy1_we),
	.dpr_ce(param_phy1_ce ),
	.dpr_di(param_phy1_din),
	.dpr_do(param_phy1_dout),
	// Flags, Metrics, Interrupts, and Debug
	.rx_enet_bcast( rx_enet_bcast[1] ),
	.rx_ipv4_arp( rx_ipv4_arp[1] ),	
	.mac_int( mac_int[1] ),
	.rx_sop( rx_sop[1] ),
	.rx_eop( rx_eop[1] ),
	.tx_sop( tx_sop[1] ),
	.tx_eop( tx_eop[1] ),
	.metrics_start ( ),
	.metrics_d ( 9'h0 ),
	.rx_active( mac_rx_active[1] ),
	.tx_active( mac_tx_active[1] )
);

ipv4_rx ipv4_rx_1(
		.rstn( rstn ),
		.clk( pcs_pclk ),	
		// control
		.phy_resetn ( phy_resetn[1] ),
		.phy_up( phy_up[1] ),
		// packet data
		.pkt_start( ipv4_pkt_start[1] ),
		.rx_eop( rx_eop[1] ),
		.rx_data_m1( rx1_data_m1 ), 
		.rx_data_m2( rx1_data_m2 ), 
		.rx_data_m3( rx1_data_m3), 
		.rx_data_m4( rx1_data_m4 ),	
		// flags
		.pkt_complete(ipv4_pkt_complete[1]),
		.trigger_src_addr(  ),
		.trigger_dst_addr( trigger[1] ),
		.keep(  )
	);

pkt_filter #(.DEPTH(8), .DEPTHW(3), .WIDTH(32)) pkt_filter_10(
		.rstn( rstn ),
		.clk( pcs_pclk ),
		// input for programming
		.sel( pkt_filter_sel_10 ),
		.we( mem_we ),
		.addr( mem_addr[4:0] ),
		.d_in( mem_d_i[7:0] ),
		// registered data
		.rx_data_m1( rx1_data_m1 ), 
		.rx_data_m2( rx1_data_m2 ), 
		.rx_data_m3( rx1_data_m3), 
		.rx_data_m4( rx1_data_m4 ),	
		// filter
		.new_frame ( rx_sop[1] ),
		.block( 1'b0 ),
		.invert( 1'b1 ),
		.trigger( trigger[1] ),
		.keep( rx_pf_keep_10 )
	);

drop_fifo drop_fifo_10(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		.enable( 1'b1 ),
		// control
		.keep ( rx_pf_keep_10 | rx_mac_keep[1] ),
		.passthrough( 1'b0 ),
		// input
		.we_in( rx_sc_fifo_we[1] ),
		.wr_done( rx_sc_wr_done[1] ),
		.d_in( rx_sc_fifo_d1 ),
		// output
		.we_out( rx_df_fifo_we_10 ),
		.d_out( rx_df_fifo_d_10 ),
		// debug
		.active( drop_rx1_active[0] )
	);
	
sync_fifo sync_fifo_rx_10(
	.rstn( rstn ),
	.clk ( pcs_pclk ),
	// input / RX
	.we ( rx_df_fifo_we_10 & phy_up[0] ),
	.d_in ( rx_df_fifo_d_10 ),
	// output / TX
	.re ( rx_sw_fifo_re_10 ),
	.d_out( rx_sf_fifo_d_10 ),
	.empty( rx_sf_fifo_empty_10 ),
	.almost_full(  ),
	.reset_ptrs( 1'b0 ),
	// debug
	.active( sync_rx1_active[0] )
);

pkt_filter pkt_filter_12(
		.rstn( rstn ),
		.clk( pcs_pclk ),
		// input for programming
		.sel( pkt_filter_sel_12 ),
		.we( mem_we ),
		.addr( mem_addr[3:0] ),
		.d_in( mem_d_i[7:0] ),
		// registered data
		.rx_data_m1( rx1_data_m1 ), 
		.rx_data_m2( rx1_data_m2 ), 
		.rx_data_m3( rx1_data_m3), 
		.rx_data_m4( rx1_data_m4 ),	
		// filter
		.new_frame ( rx_sop[1] ),
		.block( rx_sf_almost_full_12 ),
		.invert( 1'b1 ),
		.trigger( trigger[1] ),
		.keep( rx_pf_keep_12 )
	);
	
drop_fifo drop_fifo_12(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		.enable(1'b1),
		// control
		.keep ( rx_pf_keep_12 | rx_mac_keep[1] ),
		.passthrough( 1'b0 ),
		// input
		.we_in( rx_sc_fifo_we[1] ),
		.wr_done( rx_sc_wr_done[1] ),
		.d_in( rx_sc_fifo_d1 ),
		// output
		.we_out( rx_df_fifo_we_12 ),
		.d_out( rx_df_fifo_d_12 ),
		// debug
		.active( drop_rx1_active[2] )
	);

sync_fifo sync_fifo_rx_12(
	.rstn( rstn ),
	.clk ( pcs_pclk ),
	// input / RX
	.we ( rx_df_fifo_we_12 & phy_up[2] ),
	.d_in ( rx_df_fifo_d_12 ),
	// output / TX
	.re ( rx_sw_fifo_re_12 ),
	.d_out( rx_sf_fifo_d_12 ),
	.empty( rx_sf_fifo_empty_12 ),
	.almost_full( rx_sf_almost_full_12 ),
	.reset_ptrs( 1'b0 ),
	// debug
	.active( sync_rx1_active[2] )
);

pkt_filter pkt_filter_13(
		.rstn( rstn ),
		.clk( pcs_pclk ),
		// input for programming
		.sel( pkt_filter_sel_13 ),
		.we( mem_we ),
		.addr( mem_addr[3:0] ),
		.d_in( mem_d_i[7:0] ),
		// registered data
		.rx_data_m1( rx1_data_m1 ), 
		.rx_data_m2( rx1_data_m2 ), 
		.rx_data_m3( rx1_data_m3), 
		.rx_data_m4( rx1_data_m4 ),	
		// filter
		.new_frame ( rx_sop[1] ),
		.block( 1'b0 ),
		.invert( 1'b0 ),
		.trigger( trigger[1] ),
		.keep( rx_pf_keep_13 )
	);

drop_fifo drop_fifo_13(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		.enable( 1'b0 ),
		// control
		.keep ( rx_pf_keep_13 | rx_mac_keep[1] ),
		.passthrough( 1'b0 ),
		// input
		.we_in( rx_sc_fifo_we[1] ),
		.wr_done( rx_sc_wr_done[1] ),
		.d_in( rx_sc_fifo_d1 ),
		// output
		.we_out( rx_df_fifo_we_13 ),
		.d_out( rx_df_fifo_d_13 ),
		// debug
		.active( drop_rx1_active[3] )
	);
	
sync_fifo sync_fifo_rx_13(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		// input / RX
		.we ( rx_df_fifo_we_13 & phy_up[3] ),
		.d_in ( rx_df_fifo_d_13 ),
		// output / TX
		.re ( rx_sw_fifo_re_13 ),
		.d_out( rx_sf_fifo_d_13 ),
		.empty( rx_sf_fifo_empty_13 ),
		.almost_full(  ),
		.reset_ptrs( 1'b0 ),
		// debug
		.active( sync_rx1_active[3] )
	);

fcs fcs_1(
	.rstn( rstn ),
	.clk( pcs_pclk ),
	.init( fcs_init[1] ),
	.enable( fcs_enable[1] ), 
	.addr( fcs_addr1 ),
	.din( fcs_din1 ),
	.dout( fcs_dout1 )
);

/*
 * Param RAM
 */
dpram param_ram_1(
		.rstn(rstn),
		.a_clk(clk_10),
		.a_clk_e(param_sel[0]),
		.a_we(mem_we),
		.a_oe(mem_oe),
		.a_addr(mem_addr),
		.a_din(mem_d_i[8:0]),
		.a_dout(param_ram_1_do),
		// port B
		.b_clk( pcs_pclk),
		.b_clk_e(param_phy1_ce),
		.b_we(param_phy1_we),
		.b_oe( 1'b1  ),
		.b_addr( param_phy1_addr ),
		.b_din( param_phy1_dout ),
		.b_dout( param_phy1_din )
	);


metrics metrics_2(
	.rstn( rstn ),
	.clk( pcs_pclk ),
	.mode_100Mbit( mode_100Mbit[2] ),
	// input data for gathering metrics
	.rx_mac_keep( rx_mac_keep ),
	.rx_pf_keep_01( rx_pf_keep_01 ),
	.rx_pf_keep_02( rx_pf_keep_02 ),
	.rx_pf_keep_10( rx_pf_keep_10 ),
	.rx_pf_keep_12( rx_pf_keep_12 ),
	.rx_pf_keep_20( rx_pf_keep_20 ),
	.rx_pf_keep_21( rx_pf_keep_21 ),
	.rx_pf_keep_23( rx_pf_keep_23 ),
	
	.rx_sop( rx_sop ),
	.rx_eop( rx_eop ),
	.tx_sop( tx_sop ),
	.tx_eop( tx_eop ),
	// metric outputs
	.metrics_start ( metrics_start ),
	.metrics_d( metrics_d )
);

mac mac_2(
	.rstn(~mac_reset[2]),
	.phy_resetn ( phy_resetn[2] ),
	.clk( pcs_pclk ),
	.tap_port ( 1'b0 ),
	// PCS / SERDES health
	.rx_lsm( 1'b1 ),	// TODO: Fix LSM for SFP
	.rx_cv_err ( sgmii_rx_cv_err[2] ),
	.rx_disp_err( sgmii_rx_disp_err[2] ),
	.rx_cdr_lol( sgmii_rx_cdr_lol[2] ),
	.rx_los ( sgmii_rx_los_low[2] ),
	// AN
	.phy_type(2'b01),		// SX==1
	.pulse_1_6ms(pulse_1_6ms),
	.pulse_10ms(pulse_10ms),
	.fixed_speed(SGMII_SPEED_1GBIT),
	.an_disable( 1'b0 ),
	.an_duplex(  ),
	.phy_up( phy_up[2] ),
	.mode_100Mbit( mode_100Mbit[2] ),
	// Switch I/F	
	.tx_mode( tx_sw_mode2 ),
	.tx_f( tx_sc_done[2] ),
	// PCS data I/F
	.rx_k( sgmii_rx_k[2] ),
	.rx_data( rx_data2 ),
	.tx_k( sgmii_tx_k[2] ),
	.tx_data( tx_data2 ),
	.tx_disp_correct( sgmii_tx_disp_correct[2] ),
	// FCS
	.fcs_init( fcs_init[2] ),
	.fcs_enable( fcs_enable[2] ),
	.fcs_addr( fcs_addr2 ),
	.fcs_dout( fcs_din2 ),
	.fcs_din( fcs_dout2 ),
	// MAC RX / FIFO Write
	.rx_fifo_we( rx_sc_fifo_we[2] ),
	.rx_fifo_d(rx_sc_fifo_d2),
	.rx_error( rx_sc_error[2] ),
	.rx_keep( rx_mac_keep[2] ),
	.rx_wr_done( rx_sc_wr_done[2] ),
	.rx_byte_cnt(rx2_byte_cnt),
	.rx_mode(),
	// MAC TX / FIFO Read
	.tx_byte_cnt_i(tx2_byte_cnt),
	.tx_src_sel(tx_src_sel2),
	.tx_fifo_re( tx_sc_fifo_re[2] ),
	.tx_fifo_d( tx_sw_fifo_d2 ),
	.tx_fifo_empty( tx_sw_fifo_empty[2]),
	// Packet Filter
 	.rx_sample( ),
	.ipv4_pkt_start( ipv4_pkt_start[2] ),
	.trigger( ),
	.rx_k_m1( rx2_k_m1 ), 
	.rx_k_m2( rx2_k_m2 ), 
	.rx_k_m3( rx2_k_m3), 
	.rx_k_m4( rx2_k_m4 ),
	.rx_data_m1( rx2_data_m1 ), 
	.rx_data_m2( rx2_data_m2 ), 
	.rx_data_m3( rx2_data_m3), 
	.rx_data_m4( rx2_data_m4 ),
	// Param RAM
	.dpr_ad( param_phy2_addr ),
	.dpr_we( param_phy2_we ),
	.dpr_ce( param_phy2_ce ),
	.dpr_di( param_phy2_din ),
	.dpr_do( param_phy2_dout ),
	// Flags, Metrics, Interrupts, and Debug
	.rx_enet_bcast( rx_enet_bcast[2] ),
	.rx_ipv4_arp( rx_ipv4_arp[2] ),	
	.mac_int( mac_int[2] ), 
	.rx_sop( rx_sop[2] ),
	.rx_eop( rx_eop[2] ),
	.tx_sop( tx_sop[2] ),
	.tx_eop( tx_eop[2] ),
	.metrics_start ( metrics_start ),
	.metrics_d( metrics_d ),
	.rx_active( mac_rx_active[2] ),
	.tx_active( mac_tx_active[2] )
);

ipv4_rx ipv4_rx_2(
		.rstn( rstn ),
		.clk( pcs_pclk ),	
		// control
		.phy_resetn ( phy_resetn[2] ),
		.phy_up( phy_up[2] ),
		// packet data
		.pkt_start( ipv4_pkt_start[2] ),
		.rx_eop( rx_eop[2] ),
		.rx_data_m1( rx2_data_m1 ), 
		.rx_data_m2( rx2_data_m2 ), 
		.rx_data_m3( rx2_data_m3), 
		.rx_data_m4( rx2_data_m4 ),	
		// flags
		.pkt_complete(ipv4_pkt_complete[2]),
		.trigger_src_addr(  ),
		.trigger_dst_addr( trigger[2] ),
		.keep(  )
	);


pkt_filter pkt_filter_20(
		.rstn( rstn ),
		.clk( pcs_pclk ),
		// input for programming
		.sel( pkt_filter_sel_20 ),
		.we( mem_we ),
		.addr( mem_addr[3:0] ),
		.d_in( mem_d_i[7:0] ),
		// registered data
		.rx_data_m1( rx2_data_m1 ), 
		.rx_data_m2( rx2_data_m2 ), 
		.rx_data_m3( rx2_data_m3), 
		.rx_data_m4( rx2_data_m4 ),	
		// filter
		.new_frame ( rx_sop[2] ),
		.block( rx_sf_almost_full_20 ),
		.invert( 1'b0 ),
		.trigger( trigger[2] ),
		.keep( rx_pf_keep_20 )
);

drop_fifo drop_fifo_20(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		.enable( 1'b0 ),
		// control
		.keep ( rx_pf_keep_20 | rx_mac_keep[2] ),
		.passthrough( 1'b0 ),
		// input
		.we_in( rx_sc_fifo_we[2] ),
		.wr_done( rx_sc_wr_done[2] ),
		.d_in( rx_sc_fifo_d2 ),
		// output
		.we_out( rx_df_fifo_we_20 ),
		.d_out( rx_df_fifo_d_20 ),
		// debug
		.active( drop_rx2_active[0] )
	);

sync_fifo sync_fifo_rx_20(
	.rstn( rstn ),
	.clk ( pcs_pclk ),
	// input / RX
	.we ( rx_df_fifo_we_20 & phy_up[0]),
	.d_in ( rx_df_fifo_d_20 ),
	// output / TX
	.re ( rx_sw_fifo_re_20 ),
	.d_out( rx_sf_fifo_d_20 ),
	.empty( rx_sf_fifo_empty_20 ),
	.almost_full( rx_sf_almost_full_20 ),
	.reset_ptrs( 1'b0 ),
	// debug
	.active( sync_rx2_active[0] )
);

pkt_filter pkt_filter_21(
		.rstn( rstn ),
		.clk( pcs_pclk ),
		// input for programming
		.sel( pkt_filter_sel_21 ),
		.we( mem_we ),
		.addr( mem_addr[3:0] ),
		.d_in( mem_d_i[7:0] ),
		// registered data
		.rx_data_m1( rx2_data_m1 ), 
		.rx_data_m2( rx2_data_m2 ), 
		.rx_data_m3( rx2_data_m3), 
		.rx_data_m4( rx2_data_m4 ),	
		// filter
		.new_frame ( rx_sop[2] ),
		.block( 1'b0 ),
		.invert( 1'b0 ),
		.trigger( trigger[2] ),
		.keep( rx_pf_keep_21 )
);
	
drop_fifo drop_fifo_21(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		.enable( 1'b0 ),
		// control
		.keep ( rx_pf_keep_21 | rx_mac_keep[2] ),
		.passthrough( 1'b0 ),
		// input
		.we_in( rx_sc_fifo_we[2] ),
		.wr_done( rx_sc_wr_done[2] ),
		.d_in( rx_sc_fifo_d2 ),
		// output
		.we_out( rx_df_fifo_we_21 ),
		.d_out( rx_df_fifo_d_21 ),
		// debug
		.active( drop_rx2_active[1] )
	);

sync_fifo sync_fifo_rx_21(
	.rstn( rstn ),
	.clk ( pcs_pclk ),
	// input / RX
	.we ( rx_df_fifo_we_21 & phy_up[1] ),
	.d_in ( rx_df_fifo_d_21 ),
	// output
	.re ( rx_sw_fifo_re_21 ),
	.d_out( rx_sf_fifo_d_21 ),
	.empty( rx_sf_fifo_empty_21 ),
	.almost_full(  ),
	.reset_ptrs( 1'b0 ),
	// debug
	.active( sync_rx2_active[1] )
);

pkt_filter pkt_filter_2u(
		.rstn( rstn ),
		.clk( pcs_pclk ),
		// input for programming
		.sel( pkt_filter_sel_2u ),
		.we( mem_we ),
		.addr( mem_addr[3:0] ),
		.d_in( mem_d_i[7:0] ),
		// registered data
		.rx_data_m1( rx2_data_m1 ), 
		.rx_data_m2( rx2_data_m2 ), 
		.rx_data_m3( rx2_data_m3), 
		.rx_data_m4( rx2_data_m4 ),	
		// filter
		.new_frame ( rx_sop[2] ),
		.block( tx_uc_block ),
		.invert( 1'b0 ),
		.trigger( trigger[2] ),
		.keep( rx_pf_keep_2u )
	);

drop_fifo drop_fifo_2u(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		.enable( 1'b0 ),
		// control
		.passthrough( 1'b0 ),
		.keep ( rx_pf_keep_2u | rx_mac_keep[2] ),
		// input
		.we_in( rx_sc_fifo_we[2] ),
		.wr_done( rx_sc_wr_done[2] ),
		.d_in( rx_sc_fifo_d2 ),
		// output
		.we_out( rx_df_fifo_we_2u ), 
		.d_out( rx_df_fifo_d_2u ),
		// debug
		.active( )
	);

// TODO: add a flag on we to keep UC from being overwritten
sync_fifo sync_fifo_rx_2u(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		// input / RX
		.we ( rx_df_fifo_we_2u ),
		.d_in ( rx_df_fifo_d_2u ),
		// output
		.re ( rx_sw_fifo_re_2u ),
		.d_out( rx_sf_fifo_d_2u ),
		.empty( rx_sf_fifo_empty_2u ),
		.almost_full(  ),
		.reset_ptrs( 1'b0 ),
		// debug
		.active(  )
);

fcs fcs_2(
	.rstn( rstn ),
	.clk( pcs_pclk ),
	.init( fcs_init[2] ),
	.enable( fcs_enable[2] ), 
	.addr( fcs_addr2 ),
	.din( fcs_din2 ),
	.dout( fcs_dout2 )
);

mac mac_3(
		.rstn( ~mac_reset[3] & ~sgmii_rx_los_low[3] ),
		.phy_resetn ( phy_resetn[3] ),
		.clk( pcs_pclk ),	
		.tap_port ( 1'b0 ),
		// PCS / SERDES health
		.rx_lsm( sgmii_lsm_status[3] ),
		.rx_cv_err ( sgmii_rx_cv_err[3] ),
		.rx_disp_err( sgmii_rx_disp_err[3] ),
		.rx_cdr_lol( sgmii_rx_cdr_lol[3] ),
		.rx_los ( sgmii_rx_los_low[3] ),
		// MAC AN
		.phy_type(2'b11),		// SMA=3
		.pulse_1_6ms(pulse_1_6ms),
		.pulse_10ms(pulse_10ms),
		.fixed_speed(SGMII_SPEED_1GBIT),
		.an_disable(1'b1),
		.an_duplex(  ),
		.phy_up( phy_up[3] ),
		.mode_100Mbit( mode_100Mbit[3] ),
		// Switch I/F
		.tx_mode( tx_sw_mode3 ),
		.tx_f( tx_sc_done[3] ),
		// PCS data I/F
		.rx_k( sgmii_rx_k[3] ),
		.rx_data( rx_data3 ),
		.tx_k( sgmii_tx_k[3] ),
		.tx_data( tx_data3 ),
		.tx_disp_correct( sgmii_tx_disp_correct[3] ),
		// Flags and Interrupts 
		.rx_keep( rx_mac_keep[3] ),
		// TX FCS
		.fcs_init( fcs_init[3] ),
		.fcs_enable( fcs_enable[3] ),
		.fcs_addr( fcs_addr3 ),
		.fcs_dout( fcs_din3 ),
		.fcs_din( fcs_dout3 ),
		// MAC RX / FIFO Write
		.rx_fifo_we( rx_sc_fifo_we[3] ),
		.rx_fifo_d( rx_sc_fifo_d3 ),
		.rx_error( rx_sc_error[3] ),
		.rx_wr_done( rx_sc_wr_done[3] ),
		.rx_byte_cnt(rx3_byte_cnt),
		.rx_mode(),
		// MAC TX / FIFO Read
		.tx_byte_cnt_i(tx3_byte_cnt),
		.tx_src_sel(tx_src_sel3),
		.tx_fifo_re( tx_sc_fifo_re[3] ),
		.tx_fifo_d( tx_sw_fifo_d3 ),
		.tx_fifo_empty( tx_sw_fifo_empty[3] ),
		// Packet Filter
		.rx_sample( rx_sample[3] ),
		.ipv4_pkt_start( ipv4_pkt_start[3] ),
		.trigger( ),
		.rx_k_m1( rx3_k_m1 ), 
		.rx_k_m2( rx3_k_m2 ), 
		.rx_k_m3( rx3_k_m3), 
		.rx_k_m4( rx3_k_m4 ),
		.rx_data_m1( rx3_data_m1 ), 
		.rx_data_m2( rx3_data_m2 ), 
		.rx_data_m3( rx3_data_m3), 
		.rx_data_m4( rx3_data_m4 ),
		// Param RAM
		.dpr_ad( ),
		.dpr_we( ),
		.dpr_ce( ),
		.dpr_di( 9'h0),
		.dpr_do( ),
		// Flags, Metrics, Interrupts, and Debug
		.rx_enet_bcast( rx_enet_bcast[3] ),
		.rx_ipv4_arp( rx_ipv4_arp[3] ),	
		.mac_int( mac_int[3] ),
		.rx_sop( rx_sop[3] ),
		.rx_eop( rx_eop[3] ),
		.tx_sop( tx_sop[3] ),
		.tx_eop( tx_eop[3] ),
		.metrics_start ( ),
		.metrics_d ( 9'h0 ),
		.rx_active( mac_rx_active[3] ),
		.tx_active( mac_tx_active[3] )
	);


ipv4_rx ipv4_rx_3(
		.rstn( rstn ),
		.clk( pcs_pclk ),	
		// control
		.phy_resetn ( phy_resetn[3] ),
		.phy_up( phy_up[3] ),
		// packet data
		.pkt_start( ipv4_pkt_start[3] ),
		.rx_eop( rx_eop[3] ),
		.rx_data_m1( rx3_data_m1 ), 
		.rx_data_m2( rx3_data_m2 ), 
		.rx_data_m3( rx3_data_m3), 
		.rx_data_m4( rx3_data_m4 ),	
		// flags
		.pkt_complete(ipv4_pkt_complete[3]),
		.trigger_src_addr(  ),
		.trigger_dst_addr( trigger[3] ),
		.keep(  )
	);
	


pkt_filter pkt_filter_30(
		.rstn( rstn ),
		.clk( pcs_pclk ),
		// input for programming
		.sel( pkt_filter_sel_30 ),
		.we( mem_we ),
		.addr( mem_addr[3:0] ),
		.d_in( mem_d_i[7:0] ),
		// registered data
		.rx_data_m1( rx3_data_m1 ), 
		.rx_data_m2( rx3_data_m2 ), 
		.rx_data_m3( rx3_data_m3), 
		.rx_data_m4( rx3_data_m4 ),	
		// filter
		.new_frame ( rx_sop[3] ),
		.block( 1'b0 ),
		.invert( 1'b0 ),
		.trigger( trigger[3] ),
		.keep( rx_pf_keep_30 )
	);

drop_fifo drop_fifo_30(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		.enable( 1'b0 ),
		// control
		.keep ( rx_pf_keep_30 | rx_mac_keep[3] ),
		.passthrough( 1'b0 ),
		// input
		.we_in( rx_sc_fifo_we[3] ),
		.wr_done( rx_sc_wr_done[3] ),
		.d_in( rx_sc_fifo_d3 ),
		// output
		.we_out( rx_df_fifo_we_30 ),
		.d_out( rx_df_fifo_d_30 ),
		// debug
		.active( drop_rx3_active[0] )
	);
	
sync_fifo sync_fifo_rx_30(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		// input
		.we ( rx_df_fifo_we_30 & phy_up[0] ),
		.d_in ( rx_df_fifo_d_30 ),
		// output
		.re ( rx_sw_fifo_re_30 ),
		.d_out( rx_sf_fifo_d_30 ),
		.empty( rx_sf_fifo_empty_30 ),
		.almost_full(  ),
		.reset_ptrs( 1'b0 ),
		// debug
		.active( sync_rx3_active[0] )
	);
	
pkt_filter pkt_filter_31(
		.rstn( rstn ),
		.clk( pcs_pclk ),
		// input for programming
		.sel( pkt_filter_sel_31 ),
		.we( mem_we ),
		.addr( mem_addr[3:0] ),
		.d_in( mem_d_i[7:0] ),
		// registered data
		.rx_data_m1( rx3_data_m1 ), 
		.rx_data_m2( rx3_data_m2 ), 
		.rx_data_m3( rx3_data_m3), 
		.rx_data_m4( rx3_data_m4 ),	
		// filter
		.new_frame ( rx_sop[3] ),
		.block( 1'b0 ),
		.invert( 1'b0 ),
		.trigger( trigger[3] ),
		.keep( rx_pf_keep_31 )
	);

drop_fifo drop_fifo_31(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		.enable( 1'b0 ),
		// control
		.keep ( rx_pf_keep_31 | rx_mac_keep[3] ),
		.passthrough( 1'b0 ),
		// input
		.we_in( rx_sc_fifo_we[3] ),
		.wr_done( rx_sc_wr_done[3] ),
		.d_in( rx_sc_fifo_d3 ),
		// output
		.we_out( rx_df_fifo_we_31 ),
		.d_out( rx_df_fifo_d_31 ),
		// debug
		.active( drop_rx3_active[1] )
	);
	
sync_fifo sync_fifo_rx_31(
		.rstn( rstn ),
		.clk ( pcs_pclk ),
		// input
		.we ( rx_df_fifo_we_31 & phy_up[1] ),
		.d_in ( rx_df_fifo_d_31 ),
		// output
		.re ( rx_sw_fifo_re_31 ),
		.d_out( rx_sf_fifo_d_31 ),
		.empty( rx_sf_fifo_empty_31 ),
		.almost_full(  ),
		.reset_ptrs( 1'b0 ),
		// debug
		.active( sync_rx3_active[1] )
	);
	
fcs fcs_3(
	.rstn( rstn ),
	.clk( pcs_pclk ),
	.init( fcs_init[3] ),
	.enable( fcs_enable[3] ), 
	.addr( fcs_addr3 ),
	.din( fcs_din3 ),
	.dout( fcs_dout3 )
);

/* 
 * uCont i/f FIFO 
 * FIFO side connects to network switch
 * RX: processor writes (data into switch)
 * TX: processor reads (data from switch)
 */
half_fifo  #(.DPRAM_DEPTH(9)) micro_fifo_0 (
		.rstn(  rstn  ),
		.uc_clk(clk_10),
		.fifo_clk(pcs_pclk),
		// UC interrupt support
		.fifo_we_int ( micro_fifo_int ),
		// TX mode
		.tx_mode(tx_sw_modeu),
		// DPRAM common
		.dpram_addr( mem_addr[8:0] ),
		.dpram_din( mem_d_i[8:0] ), 
		.dpram_dout( micro_fifo_do ),
		.dpram_we( mem_we ),
		.dpram_oe( mem_oe ),
		// UC select signals
		.dpram_ptrs_sel( dpram_ptrs_sel ),
		.dpram_rx_sel( dpram_rx_sel ),
		.dpram_tx_sel( dpram_tx_sel ),
		// FIFO TX (input)
		.fifo_we( tx_sw_fifo_we ),
		.fifo_d_in( tx_sw_fifo_du ),
		// FIFO RX (output)
		.fifo_re( rx_sw_fifo_re_u2 ),
		.fifo_d_out( rx_uc_fifo_d_u2 ),
		// FIFO flags
		.rx_empty( rx_uc_fifo_empty_u2 ),
		.tx_full ( tx_uc_block )
	);

/*
 * Param RAM
 */
dpram param_ram_2(
        .rstn(rstn),
        .a_clk(clk_10),
        .a_clk_e(param_sel[2]),
        .a_we(mem_we),
        .a_oe(mem_oe),
        .a_addr(mem_addr),
        .a_din(mem_d_i[8:0]),
        .a_dout(param_ram_2_do),
        // port B
        .b_clk( pcs_pclk),
        .b_clk_e(param_phy2_ce),
        .b_we(param_phy2_we),
        .b_oe( 1'b1  ),
        .b_addr( param_phy2_addr ),
        .b_din( param_phy2_dout ),
        .b_dout( param_phy2_din )
);

//defparam param_ram_2.dp16kd_inst.INITVAL_00 = "00000000000000000000000000000000000000000000000000000000000000000022E10069F00800";
											        


/* 
*	PCS Notes:
*	All _c control signals are asynch in the SERDES/PCS
*	All _s control signals are asynch and should be clocked before being used
*	TxPLL provides system clock for FPGA logic
* 	tx_full_clk uses wire name 'txclk' and feeds both txi_clk and rxi_clk, as shown in Figure 9-27
*	For SGMII, tx_pclk is fed back internally to rxi_clk and ebrd_clk
*	ebrd_clk: CTC FIFO Read Clock per Channel
*
*/

assign ext_sci_int = sci_int[0];

/*
PCSCLKDIV pcsclkdiv0 (
	.RST( ~rstn ),
	.CLKI( refclko ),
	.SEL2( 1'b1 ), 	// 101 is div by 8
	.SEL1( 1'b0 ),
	.SEL0( 1'b1 ),
	.CDIV1( ),
	.CDIVX( )
);
*/
 
/* 
 * PCS block that encapsulates two DCUs and the SCI block 
 */
 assign pcs_error[0] = sgmii_rx_cv_err[0] | sgmii_rx_cdr_lol[0] | !sgmii_lsm_status[0] | sgmii_rx_los_low[0];
 assign pcs_error[1] = sgmii_rx_cv_err[1] | sgmii_rx_cdr_lol[1] | !sgmii_lsm_status[1] | sgmii_rx_los_low[1];
 assign pcs_error[2] = sgmii_rx_cv_err[2] | sgmii_rx_cdr_lol[2] | sgmii_rx_los_low[2];
 assign pcs_error[3] = sgmii_rx_cv_err[3] | sgmii_rx_cdr_lol[3] | sgmii_rx_los_low[3];
 
pcs pcs_0 (

	.refclk0_refclkn(refclkp_d0), 
	.refclk0_refclkp(refclkn_d0), 
	.refclk0_refclko( refclko ),

	// cross DCU tie offs
	.sgmii0_cyawstn( 1'b0 ),

	//DCU0 CH0 to PHY0
    .sgmii0_hdinn(sgmii0_hdinn), 
	.sgmii0_hdinp(sgmii0_hdinp), 
	.sgmii0_hdoutn(sgmii0_hdoutn), 
	.sgmii0_hdoutp(sgmii0_hdoutp), 
	
	// DCU resets
	.sgmii0_tx_serdes_rst_c( tx_serdes_rst[0] ),			// rset LOL signal in PLL TODO: change this
	.sgmii0_rst_dual_c( pcs_rst_dual[0] ), 					// resets all serdes channels including aux and PCS
	.sgmii0_serdes_rst_dual_c( serdes_rst_dual[0] ),		// resets serdes dual gated by fpga_reset_enable
	
	// channel resets
	.sgmii0_rx_pcs_rst_c( rx_pcs_rst[0] ),			// reset channel PCS logic
	.sgmii0_rx_serdes_rst_c( rx_serdes_rst[0] ),	// reset digital logic in serdes rx
	.sgmii0_tx_pcs_rst_c( tx_pcs_rst[0] ),			// reset channel PCS logic
	
	.sgmii0_rx_pwrup_c(1'b1),			// channel power up
	.sgmii0_tx_pwrup_c(1'b1), 			// channel power up
	
	/* tx_pclk: Transmit Primary Clock. Direct connection to Primary
	 * clock network. When gearing is not enabled, this output
	 * equals the transmit full rate clock. When 2:1 gearing
	 * is enabled, it is a divide-by-2 half-rate clock.    
	 */
	.sgmii0_tx_pclk( pcs_pclk ),	// direct connection from primary clock network
	.sgmii0_txi_clk( pcs_pclk ),	// clocks the TX UI FIFOS (see Figure 27)
	
    .sgmii0_tx_disp_correct(sgmii_tx_disp_correct[0]), 	
    .sgmii0_tx_k(sgmii_tx_k[0]), 
	.sgmii0_txdata( tx_data0 ), 
	.sgmii0_xmit(1'b0), 						//TODO: Auto Neg state machine	
    .sgmii0_signal_detect_c(1'b1),	
	.sgmii0_rx_cv_err( sgmii_rx_cv_err[0] ),	// code violation with associated data, PCS will drive 0xEE and K=1 (Table 9-4)
    .sgmii0_rx_disp_err( sgmii_rx_disp_err[0] ), 
	.sgmii0_rx_k( sgmii_rx_k[0] ), 
	.sgmii0_rxdata( rx_data0 ), 
    .sgmii0_lsm_status_s( sgmii_lsm_status[0] ), 	// lane is synced with commas ( 0 means no commas detected )  
    .sgmii0_rx_cdr_lol_s( sgmii_rx_cdr_lol[0] ), 	// CDR Loss of lock
	.sgmii0_rx_los_low_s( sgmii_rx_los_low[0] ),	// Loss of signal (LO THRESHOLD RANGE) detection    

	.sgmii0_ctc_ins_s(), 			// skip char added by CTC
	.sgmii0_ctc_orun_s(), 			// CTC FIFO over run error
	.sgmii0_ctc_urun_s(),			// CTC FIFO under run error
	.sgmii0_ctc_del_s(), 			// skip char deleted by CTC
	.sgmii0_pll_lol( pll_lol[0] ),
	
	//DCU0 CH1 to PHY1
	.sgmii1_hdinn( sgmii1_hdinn ), 
	.sgmii1_hdinp( sgmii1_hdinp ), 
	.sgmii1_hdoutn( sgmii1_hdoutn ),
	.sgmii1_hdoutp( sgmii1_hdoutp ), 
	
	// DCU resets
	.sgmii1_rst_dual_c( pcs_rst_dual[0] ),
	.sgmii1_serdes_rst_dual_c( serdes_rst_dual[0] ),
	.sgmii1_tx_serdes_rst_c( tx_serdes_rst[0] ),
	
	// Channel resets
    .sgmii1_rx_pcs_rst_c( rx_pcs_rst[1] ),
	.sgmii1_rx_serdes_rst_c( rx_serdes_rst[1] ),
	.sgmii1_tx_pcs_rst_c( tx_pcs_rst[1] ),
	
	.sgmii1_rx_pwrup_c( 1'b1 ), 	
	.sgmii1_tx_pwrup_c( 1'b1 ),
 	.sgmii1_serdes_pdb( 1'b1 ), 
	
    .sgmii1_tx_pclk( ), 
    .sgmii1_txi_clk( pcs_pclk ),

	.sgmii1_rx_cv_err( sgmii_rx_cv_err[1] ), 
    .sgmii1_rx_disp_err( sgmii_rx_disp_err[1] ), 
	.sgmii1_rx_k( sgmii_rx_k[1] ), 
	.sgmii1_rxdata( rx_data1 ), 
	.sgmii1_tx_disp_correct( sgmii_tx_disp_correct[1] ), 
    .sgmii1_tx_k(  sgmii_tx_k[1] ), 
	.sgmii1_txdata( tx_data1 ), 
	.sgmii1_xmit( 1'b0 ), 				// TODO: Auto Negotiation Bit
	
	.sgmii1_signal_detect_c( 1'b1 ), 
	
	.sgmii1_ctc_del_s(), 
	.sgmii1_ctc_ins_s(), 
	.sgmii1_ctc_orun_s(),	
    .sgmii1_ctc_urun_s(), 
	
	.sgmii1_lsm_status_s( sgmii_lsm_status[1] ), 
	.sgmii1_rx_cdr_lol_s( sgmii_rx_cdr_lol[1] ), 
	.sgmii1_rx_los_low_s( sgmii_rx_los_low[1] ),

	// DCU1 CH0 to Expansion
	.sgmii2_hdinn( sgmii2_hdinn ), 
	.sgmii2_hdinp( sgmii2_hdinp ), 
	.sgmii2_hdoutn( sgmii2_hdoutn ),
	.sgmii2_hdoutp( sgmii2_hdoutp ), 
	
	// DCU Tie Offs
	.sgmii2_cyawstn( 1'b0 ),
	
	// DCU resets
	.sgmii2_rst_dual_c(  pcs_rst_dual[1] ),
	.sgmii2_serdes_rst_dual_c( serdes_rst_dual[1] ),
	.sgmii2_tx_serdes_rst_c( tx_serdes_rst[1] ),

	// Channel resets
	.sgmii2_rx_pcs_rst_c( rx_pcs_rst[2] ),
	.sgmii2_rx_serdes_rst_c( rx_serdes_rst[2] ),
	.sgmii2_tx_pcs_rst_c( tx_pcs_rst[2] ),
	
	.sgmii2_rx_pwrup_c( 1'b1 ), 	
	.sgmii2_tx_pwrup_c( 1'b1 ),
	.sgmii2_serdes_pdb( 1'b1 ), 
	
    .sgmii2_tx_pclk( ),
    .sgmii2_txi_clk( pcs_pclk ),

	.sgmii2_rx_cv_err( sgmii_rx_cv_err[2] ), 
    .sgmii2_rx_disp_err( sgmii_rx_disp_err[2] ), 
	.sgmii2_rx_k( sgmii_rx_k[2] ), 
	.sgmii2_rxdata( rx_data2 ), 
	.sgmii2_tx_disp_correct( sgmii_tx_disp_correct[2] ), 
    .sgmii2_tx_k( sgmii_tx_k[2] ), 
	.sgmii2_txdata( tx_data2 ),
	.sgmii2_xmit( 1'b0 ), 
	
	.sgmii2_signal_detect_c( 1'b1 ), 
	
	.sgmii2_ctc_del_s(), 
	.sgmii2_ctc_ins_s(), 
	.sgmii2_ctc_orun_s(),	
    .sgmii2_ctc_urun_s(), 
	
	.sgmii2_lsm_status_s( sgmii_lsm_status[2] ), 
	.sgmii2_rx_cdr_lol_s( sgmii_rx_cdr_lol[2] ), 
	.sgmii2_rx_los_low_s( sgmii_rx_los_low[2] ),
	
	.sgmii2_pll_lol( pll_lol[1] ),
	
	// DCU1 CH1 to Expansion
	.sgmii3_hdinn( sgmii3_hdinn ), 
	.sgmii3_hdinp( sgmii3_hdinp ), 
	.sgmii3_hdoutn( sgmii3_hdoutn ),
	.sgmii3_hdoutp( sgmii3_hdoutp ),
	
	// DCU resets
	.sgmii3_rst_dual_c( pcs_rst_dual[1] ),
	.sgmii3_serdes_rst_dual_c( serdes_rst_dual[1] ),
	.sgmii3_tx_serdes_rst_c( tx_serdes_rst[1] ),
	
	// Channel resets
	.sgmii3_rx_pcs_rst_c( rx_pcs_rst[3] ),
	.sgmii3_rx_serdes_rst_c( rx_serdes_rst[3] ),
	.sgmii3_tx_pcs_rst_c( tx_pcs_rst[3] ),
	
	.sgmii3_rx_pwrup_c( 1'b1 ), 	
	.sgmii3_tx_pwrup_c( 1'b1 ),
	
	.sgmii3_tx_pclk( ), 
	.sgmii3_txi_clk( pcs_pclk ),

	.sgmii3_rx_cv_err( sgmii_rx_cv_err[3] ), 
	.sgmii3_rx_disp_err( sgmii_rx_disp_err[3] ), 
	.sgmii3_rx_k( sgmii_rx_k[3] ), 
	.sgmii3_rxdata( rx_data3 ), 
	.sgmii3_tx_disp_correct( sgmii_tx_disp_correct[3] ), 
`ifdef SHIELD_SFP_SMA
	.sgmii3_tx_k(rx2_k_m1), 				// MAC 2 RX k  
	.sgmii3_txdata(rx2_data_m1),			// MAC 2 RX data
`else
	.sgmii3_tx_k(  sgmii_tx_k[3] ), 
	.sgmii3_txdata( tx_data3 ),
`endif
	.sgmii3_xmit( 1'b0 ), 				// TODO: Auto Negotiation Bit
	.sgmii3_signal_detect_c( 1'b1 ), 
	
	.sgmii3_ctc_del_s(), 
	.sgmii3_ctc_ins_s(), 
	.sgmii3_ctc_orun_s(),	
	.sgmii3_ctc_urun_s(), 
	
	.sgmii3_lsm_status_s( sgmii_lsm_status[3] ), 
	.sgmii3_rx_cdr_lol_s( sgmii_rx_cdr_lol[3] ), 
	.sgmii3_rx_los_low_s( sgmii_rx_los_low[3] ),

	
	// DCU0 SCI 
	.sgmii0_sci_sel_dual( sci_sel_dual[0] ),
	.sgmii0_sci_en_dual( 1'b1 ),
	.sgmii0_sci_addr( mem_addr[5:0] ),		// SCI Register Address Bits
	.sgmii0_sci_rddata( sci_rddata0 ),
	.sgmii0_sci_wrdata( mem_d_i[7:0] ),
	.sgmii0_sci_rd( ~fb_oen ),
	.sgmii0_sci_wrn( fb_rwn ),

	
	.sgmii0_sci_sel( sci_sel_ch[0] ),
	.sgmii0_sci_en( 1'b1 ),
	
	.sgmii1_sci_sel( sci_sel_ch[1] ),
	.sgmii1_sci_en( 1'b1 ),
	
	.sgmii0_sci_int( sci_int[1] ),
	
	// DCU1 SCI
	.sgmii2_sci_sel_dual( sci_sel_dual[1] ),
	.sgmii2_sci_en_dual( 1'b1 ),	
	.sgmii2_sci_addr( mem_addr[5:0] ),		// SCI Register Address Bits
	.sgmii2_sci_rddata( sci_rddata1 ),
	.sgmii2_sci_wrdata( mem_d_i[7:0] ),
	.sgmii2_sci_rd( ~fb_oen ),
	.sgmii2_sci_wrn( fb_rwn ),
	
	.sgmii2_sci_sel( sci_sel_ch[2] ),
	.sgmii2_sci_en( 1'b1 ),

	.sgmii2_sci_int( sci_int[0] ),
	
	.sgmii3_sci_sel( sci_sel_ch[3] )
	
);

// Link Timer for AN
link_timer link_timer_0(
	.rstn(rstn),
	.clk(pcs_pclk),
	.pulse_1_6ms(pulse_1_6ms),
	.pulse_10ms(pulse_10ms)
);

mdio_controller #(.ADDR_SZ( MDIO_ROM_ADDR_SZ )) mdio_controller_0
(
	.rstn(rstn),
	.clk(clk_10),
	.work_start(mdio_cont_work_start),
	.work_run(mdio_cont_work_run),
	.work_done(mdio_cont_work_done),
	.routine_addr( mdio_routine_addr ),
	.buffer_full(1'b0),
	.addr(rom_a),
	.di(rom_d),
	.reg_addr(mdio_reg_addr),		
	.dout(mdio_wd),
	.ld(mdio_ld),
	.rwn(mdio_rwn),
	.done(mdio_done)
);

`ifdef PHY_MARVELL
mdio_data_mvl  #(.ADDR_SZ( MDIO_ROM_ADDR_SZ )) mdio_data_mvl_0(
	.ad( rom_a ),
	.page( mdio_page_set ),
	.reg_addr( mdio_reg_addr_set ),
	.data_in_h( mdio_w_data_h_set ),
	.data_in_l( mdio_w_data_l_set ),
	.d( rom_d ),
	.oe( ~mdio_mux_sel[1] )
);
`endif
	
mdio_data_ti  #(.ADDR_SZ( MDIO_ROM_ADDR_SZ )) mdio_data_ti_0(
	.ad( rom_a ),
	.page( mdio_page_set ),
	.reg_addr( mdio_reg_addr_set ),
	.data_in_h( mdio_w_data_h_set ),
	.data_in_l( mdio_w_data_l_set ),
	.d( rom_d ),
	.oe( 1'b1 )
);


/* MDIO mux and output enables */
always @(*) begin
	case (mdio_mux_sel)
		2'b00: mdi = phy0_mdio;
		2'b01: mdi = phy1_mdio;
		2'b10: mdi = phy2_mdio_i;	// compile as 0 if GIGE_SHIELD isn't defined
		2'b11: mdi = 1'b1;  
	endcase
end

assign phy0_mdio = (mdo_oe & ~mdio_mux_sel[1] & ~mdio_mux_sel[0]) ? mdo : 1'bz;
assign phy1_mdio = (mdo_oe & ~mdio_mux_sel[1] & mdio_mux_sel[0]) ? mdo : 1'bz;
assign phy2_mdio_oe = (mdo_oe & mdio_mux_sel[1] & ~mdio_mux_sel[0]);
assign phy2_mdio_o = mdo;
	
mdio mdio_0(
	.rstn(rstn),
	.mdc(clk_10),
	// MDIO
	.mdi(mdi),
	.mdo(mdo),
	.mdo_oe(mdo_oe),
	// mdio controller interface
	.rwn(mdio_rwn),
	.phy_addr(5'h00),
	.reg_addr(mdio_reg_addr),
	.di(mdio_wd),
	.ld(mdio_ld),
	.run( mdio_run ),
	.done(mdio_done),       // signal controller that mdio xfer is done
	// output port to converter
	.dout(mdio_rd),
	.we( mdio_rd_we )
);


spi spi_0 (
	.rstn(rstn),
	.clk(clk_10),
	// spi signals
	.spi_cs( spi_cs ),
	.spi_clk( spi_clk ),
	.spi_d_in( spi_mosi),
	.spi_d_o( spi_do ),
	.spi_d_oe(spi_do_e ),
	// internal FPGA memory 
	.mem_addr( mem_addr ),
	.mux_sel ( mem_do_mux_sel ),
	.d_i( mem_d_o ),
	.d_o( mem_d_i ),
	// individual memory selects
	.we( mem_we ),
	.oe( mem_oe ),
	.dpram_tx_sel( dpram_tx_sel ),
	.dpram_rx_sel( dpram_rx_sel ),
	.dpram_ptrs_sel( dpram_ptrs_sel ),
	.param_sel( param_sel ),
	.pkt_filter_sel_01( pkt_filter_sel_01 ),
	.pkt_filter_sel_02( pkt_filter_sel_02 ),
	.pkt_filter_sel_03( pkt_filter_sel_03 ),
	.pkt_filter_sel_10( pkt_filter_sel_10 ),
	.pkt_filter_sel_12( pkt_filter_sel_12 ),
	.pkt_filter_sel_13( pkt_filter_sel_13 ),
	.pkt_filter_sel_20( pkt_filter_sel_20 ),
	.pkt_filter_sel_21( pkt_filter_sel_21 ),
	.pkt_filter_sel_23( pkt_filter_sel_23 ),
	.pkt_filter_sel_2u( pkt_filter_sel_2u ),
	.pkt_filter_sel_30( pkt_filter_sel_30 ),
	.pkt_filter_sel_31( pkt_filter_sel_31 ),
	.pkt_filter_sel_32( pkt_filter_sel_32 ),
	.pkt_filter_sel_u2( pkt_filter_sel_u2 ),
	.interrupts_sel( int_sel ),
	.sci_sel_dual( sci_sel_dual ),
	.sci_sel_ch( sci_sel_ch )
);

assign spi_miso = spi_do_e ? spi_do : 1'bz;

/* data mux out of internal memories */
always@(*)
begin
	case(mem_do_mux_sel)
		5'b00000:	mem_d_o = { 2'b0, sci_rddata1 };
		5'b00001:	mem_d_o = { 2'b0, sci_rddata0 };
		5'b00010:	mem_d_o = { 1'b0, micro_fifo_do };
		5'b00011:	mem_d_o = { 1'b0, micro_fifo_do };
		5'b00100:	mem_d_o = { 1'b0, micro_fifo_do };
		5'b01000:	mem_d_o = param_ram_0_do;
		5'b01001:	mem_d_o = param_ram_1_do;
		5'b01010:	mem_d_o = param_ram_2_do;
		5'b01011:	mem_d_o = param_ram_3_do;
		5'b10000:   mem_d_o = { 2'b0, int_do };
		default: mem_d_o = 9'h0;
	endcase
end


interrupts interrupts_0(
	.rstn( rstn ),	
	.clk( pcs_pclk ),
	.uc_clk( clk_10 ),
	// uC interface
	.sel( int_sel ),
	.we( mem_we ),
	.addr( mem_addr[0] ),
	.d_in( mem_d_i[6:0] ),
	.d_out( int_do ),
	// interrupt sources
	.cont_int( micro_fifo_int ),
	.phy_int ( { 2'b0, phy1_intn, phy0_intn }),
	.mac_int ( { mac_int[3], mac_int[2], mac_int[1], mac_int[0] } ),
	.int_o(  )
);


assign i2c_sda = sda_oe ? sda_o : 1'bz;
assign i2c_scl = scl_oe ? scl_o : 1'bz;

i2c i2c_0(
	.rstn( rstn ),
	.clk( clk_10 ),
	// external I2C I/O
	.scl_i( i2c_scl ),
	.scl_o( scl_o ),
	.scl_oe( scl_oe ),
	.sda_i( i2c_sda ),
	.sda_o( sda_o ),
	.sda_oe( sda_oe ),
	// shared memory and controller data output
	.mem_do( i2c_d_o ),
	// dedicated memory interface
	.mem_ad(  ),
	.mem_we(  ),
	.mem_ce( ),
	.mem_di( 8'haa ),
	// dedicated controller write interface
	.cont_we( i2c_cont_we ),
	.cont_done( i2c_cont_done ),
	// Controller->FIFO input interface
	.fifo_re( i2c_fifo_re ),
	.tx_fifo_empty(  cont_fifo_empty ),
	.fifo_di( fifo_r_d[6:0] )
);


/* 
*	ext_sys_fifo delays and enables:
*	we need the mdio_we delay since the fifo is clocked twice: high and low data
*
*/
always@ ( posedge clk_10 or negedge rstn )
	begin
		if ( !rstn )
			begin
				cont_fifo_re_m1 <= 1'b0;
				cont_fifo_re_m2 <= 1'b0;
			end
		else
			begin
				cont_fifo_re_m1 <= i2c_fifo_re;
				cont_fifo_re_m2 <= cont_fifo_re_m1;
			end
	end

// create a single re pulse
assign i_cont_fifo_re = cont_fifo_re_m1 & ~cont_fifo_re_m2;

assign bin_to_ascii_we = mdio_rd_we | cont_rd_we;
assign bin_to_ascii_d_in = read_fifo_mux_sel ? mdio_rd : cont_rd;

/* 
 * Input: MDIO writes
 * Output: I2C read FIFO
 */
bin_to_ascii bin_to_ascii_0(
	.rstn( rstn ),
	.clk( clk_10 ),
	.width ( 1'b1 ),
	// mdio interface
	.we_i ( bin_to_ascii_we ),
	.d_in( bin_to_ascii_d_in ),
	// mdio controller interface
	.run ( bin_to_ascii_run ),
	.done (),
	.busy( 1'b0 ),
	// fifo port
	.we_o ( read_fifo_we ),
	.d_out( read_fifo_d_i )
);

/*
 * Input: bin_to_ascii
 * Output: I2C read
 */
sync_fifo ext_sys_fifo_0(
	.rstn( rstn ),
	.clk ( clk_10 ),
	// input
	.we ( read_fifo_we ),
	.d_in ( { 2'b0, read_fifo_d_i } ),
	// output
	.re ( i_cont_fifo_re ),
	.d_out( fifo_r_d ),
	.empty( cont_fifo_empty ),
	.almost_full(  ),
	.reset_ptrs( 1'b0 ),
	// debug
	.active( )
);

always @(*) begin
	case (mdio_mux_sel)
		2'b00: rx_cdr_lol = sgmii_rx_cdr_lol[0];
		2'b01: rx_cdr_lol = sgmii_rx_cdr_lol[1];
		2'b10: rx_cdr_lol = sgmii_rx_cdr_lol[2];
		2'b11: rx_cdr_lol = 1'b1;  
	endcase
end

always @(*) begin
	case (mdio_mux_sel)
		2'b00: lsm_status = sgmii_lsm_status[0];
		2'b01: lsm_status = sgmii_lsm_status[1];
		2'b10: lsm_status = sgmii_lsm_status[2];
		2'b11: lsm_status = 1'b1;  
	endcase
end

always @(*) begin
	case (mdio_mux_sel)
		2'b00: rx_los_low = sgmii_rx_los_low[0];
		2'b01: rx_los_low = sgmii_rx_los_low[1];
		2'b10: rx_los_low = sgmii_rx_los_low[2];
		2'b11: rx_los_low = 1'b1;  
	endcase
end
	
/* Debug and Arduino Expansion */

assign led[0] = 1'b1;
assign led[1] = phy_up[0];
assign led[2] = phy_up[1];
	
`ifdef DEBUG_SPI
	assign ard_scl = spi_clk;
	assign ard_sda = spi_cs;
	assign ard_rxd1 = spi_do_e ? spi_do : 1'bz;
	assign ard_txd1 = spi_mosi;
`elsif DEBUG_MDIO
	assign ard_scl = phy_mdc;
	assign ard_sda = phy0_mdio;
	assign ard_rxd1 = 1'bz;
	assign ard_txd1 = refclko;
`elsif DEBUG_IC2
	assign ard_scl = i2c_scl;
	assign ard_sda = sda_oe ? sda_o : i2c_sda;
	assign ard_rxd1 = 1'bz;
	assign ard_txd1 = sda_oe;
`else 
	assign ard_scl = rx_sop[0];
	assign ard_sda = 1'bz;
`endif

`ifdef ARD_EXP_UART
	assign ard_txd2 = uart_txd;
	assign uart_rxd = ard_rxd2;
	assign ftdi_tdi_rxd = 1'bz;
`else
	
	// assign uart_rxd = ftdi_tck_txd;	
`endif

	assign ftdi_tdi_rxd = 1'bz;

	assign 	pe1 = pcs_error[2];		// RX data on SFP good
	assign  pe4  = ~sgmii_tx_k[2];
	assign  pe5  = phy1_gpio[1];
	assign  pg5  = 1'bz;
	assign  pe3  = fpga_gpio;
	
`ifdef SHIELD_GIGE_SMA
	assign pa[0] = phy2_mdc;
	assign pa[1] = phy2_mdio_oe ? phy2_mdio_o : 1'bz;
	assign phy2_mdio_i = pa[1];
	assign pa[2] = phy2_resetn;
`else
	assign phy2_mdio_i = 1'b0;
`endif 
	
`ifdef SHIELD_SFP_SMA
	// SFP UART testing
	assign uart_rxd = ph3;
	assign ph4 = uart_txd;

	assign sfp_los = pa[1];
	assign pa[2] = sfp_rate_select;
	assign sfp_pres_n = pa[3];
	assign pa[4] = sfp_i2c_scl;
	assign sfp_tx_fault = pa[5];
	assign pa[6] = sfp_tx_disable;
	assign sfp_i2c_sda = pa[7];

	// SFP LEDS
	assign ard_txd3 = !sfp_pres_n;  	// LED1
	assign ard_rxd3 = !sfp_tx_fault;	// LED2
	assign ard_txd2 = !sfp_los;			// LED3
	assign ard_rxd2 = !pcs_error[2];	// LED4
	assign ard_txd1 = phy_up[0];		// LED5
	assign ard_rxd1 = !mac_tx_active[0];// LED6
`endif
	
	assign fpga_int = pcs_error[2] | pcs_error[3];
	
`ifdef DARSENA_V02
	assign fpga_jtag_e =1'b1;
`endif

endmodule



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