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-rw-r--r--usrp2/testbench/single_u2_sim.v324
1 files changed, 324 insertions, 0 deletions
diff --git a/usrp2/testbench/single_u2_sim.v b/usrp2/testbench/single_u2_sim.v
new file mode 100644
index 000000000..2a7b24849
--- /dev/null
+++ b/usrp2/testbench/single_u2_sim.v
@@ -0,0 +1,324 @@
+`timescale 1ns / 1ps
+//////////////////////////////////////////////////////////////////////////////////
+
+module single_u2_sim();
+ // Misc, debug
+ wire [7:0] leds;
+ wire [31:0] debug;
+ wire [1:0] debug_clk;
+
+ // Expansion
+ wire exp_pps_in;
+ wire exp_pps_out;
+
+ // GMII
+ // GMII-CTRL
+ wire GMII_COL;
+ wire GMII_CRS;
+
+ // GMII-TX
+ wire [7:0] GMII_TXD;
+ wire GMII_TX_EN;
+ wire GMII_TX_ER;
+ wire GMII_GTX_CLK;
+ wire GMII_TX_CLK; // 100mbps clk
+
+ // GMII-RX
+ wire [7:0] GMII_RXD;
+ wire GMII_RX_CLK;
+ wire GMII_RX_DV;
+ wire GMII_RX_ER;
+
+ // GMII-Management
+ wire MDIO;
+ wire MDC;
+ wire PHY_INTn; // open drain
+ wire PHY_RESETn;
+ wire PHY_CLK; // possibly use on-board osc
+
+ // RAM
+ wire [17:0] RAM_D;
+ wire [18:0] RAM_A;
+ wire RAM_CE1n;
+ wire RAM_CENn;
+ wire RAM_CLK;
+ wire RAM_WEn;
+ wire RAM_OEn;
+ wire RAM_LDn;
+
+ // SERDES
+ wire ser_enable;
+ wire ser_prbsen;
+ wire ser_loopen;
+ wire ser_rx_en;
+
+ wire ser_tx_clk;
+ wire [15:0] ser_t;
+ wire ser_tklsb;
+ wire ser_tkmsb;
+
+ wire ser_rx_clk;
+ wire [15:0] ser_r;
+ wire ser_rklsb;
+ wire ser_rkmsb;
+
+ // CPLD interface
+ wire cpld_din, cpld_clk, cpld_detached, cpld_start, cpld_mode, cpld_done;
+
+ // ADC
+ wire [13:0] adc_a;
+ wire adc_ovf_a;
+ wire adc_on_a, adc_oe_a;
+
+ wire [13:0] adc_b;
+ wire adc_ovf_b;
+ wire adc_on_b, adc_oe_b;
+
+ // DAC
+ wire [15:0] dac_a;
+ wire [15:0] dac_b;
+
+ // I2C
+ wire SCL;
+ wire SDA;
+
+ // Clock Gen Control
+ wire [1:0] clk_en;
+ wire [1:0] clk_sel;
+ wire clk_func; // FIXME is an input to control the 9510
+ wire clk_status;
+
+ // Clocks
+ reg clk_fpga;
+ reg clk_to_mac;
+ wire pps_in;
+
+ // Generic SPI
+ wire sclk, mosi, miso;
+ wire sen_clk;
+ wire sen_dac;
+ wire sen_tx_db;
+ wire sen_tx_adc;
+ wire sen_tx_dac;
+ wire sen_rx_db;
+ wire sen_rx_adc;
+ wire sen_rx_dac;
+
+ // GPIO to DBoards
+ wire [15:0] io_tx;
+ wire [15:0] io_rx;
+
+ wire wb_clk;
+ wire start, clock_ready;
+
+ reg aux_clk;
+
+ initial aux_clk= 1'b0;
+ always #6 aux_clk = ~aux_clk;
+
+ initial clk_fpga = 1'bx;
+ initial #3007 clk_fpga = 1'b0;
+ always #5 clk_fpga = ~clk_fpga;
+
+ initial clk_to_mac = 0;
+ always #4 clk_to_mac = ~clk_to_mac;
+
+ wire div_clk, dsp_clk;
+ reg [7:0] div_ctr = 0;
+
+ assign dsp_clk = clock_ready ? clk_fpga : aux_clk;
+ assign wb_clk = div_clk;
+
+`define CLK_DIV_2 1
+//`define CLK_DIV_3
+
+`ifdef CLK_DIV_2
+ localparam clock_divider = 4'd2;
+ always @(posedge dsp_clk)
+ div_ctr <= div_ctr + 1;
+ assign div_clk = div_ctr[0];
+`endif
+
+`ifdef CLK_DIV_3
+ localparam clock_divider = 2;
+ always @(posedge dsp_clk or negedge dsp_clk)
+ if(div_ctr == 5)
+ div_ctr <= 0;
+ else
+ div_ctr <= div_ctr + 1;
+ assign div_clk = ((div_ctr == 0) | (div_ctr == 1) | (div_ctr == 2));
+`endif
+
+ initial
+ $monitor($time, ,clock_ready);
+
+ always #1000000 $monitor("Time in ns ",$time);
+
+ initial begin
+ @(negedge cpld_done);
+ @(posedge cpld_done);
+ $dumpfile("single_u2_sim.lxt");
+ $dumpvars(0,single_u2_sim);
+ end
+
+ initial #10000000 $finish;
+
+ cpld_model
+ cpld_model (.aux_clk(aux_clk),.start(cpld_start),.mode(cpld_mode),.done(cpld_done),
+ .dout(cpld_din),.sclk(cpld_clk),.detached(cpld_detached));
+
+ serdes_model serdes_model
+ (.ser_tx_clk(ser_tx_clk), .ser_tkmsb(ser_tkmsb), .ser_tklsb(ser_tklsb), .ser_t(ser_t),
+ .ser_rx_clk(ser_rx_clk), .ser_rkmsb(ser_rkmsb), .ser_rklsb(ser_rklsb), .ser_r(ser_r),
+ .even(0),.error(0) );
+
+ adc_model adc_model
+ (.clk(dsp_clk),.rst(0),
+ .adc_a(adc_a),.adc_ovf_a(adc_ovf_a),.adc_on_a(adc_on_a),.adc_oe_a(adc_oe_a),
+ .adc_b(adc_b),.adc_ovf_b(adc_ovf_b),.adc_on_b(adc_on_b),.adc_oe_b(adc_oe_b) );
+
+ wire [2:0] speed;
+ phy_sim phy_model
+ (.Gtx_clk(GMII_GTX_CLK), . Rx_clk(GMII_RX_CLK), .Tx_clk(GMII_TX_CLK),
+ .Tx_er(GMII_TX_ER), .Tx_en(GMII_TX_EN), .Txd(GMII_TXD),
+ .Rx_er(GMII_RX_ER), .Rx_dv(GMII_RX_DV), .Rxd(GMII_RXD),
+ .Crs(GMII_CRS), .Col(GMII_COL),
+ .Speed(speed), .Done(0) );
+ pullup p3(MDIO);
+
+ miim_model miim_model
+ (.mdc_i(MDC),.mdio(MDIO),.phy_resetn_i(PHY_RESETn),.phy_clk_i(PHY_CLK),
+ .phy_intn_o(PHY_INTn),.speed_o(speed) );
+
+ xlnx_glbl glbl (.GSR(),.GTS());
+
+ wire RAM_MODE = 1'b0;
+ cy1356 ram_model(.d(RAM_D),.clk(RAM_CLK),.a(RAM_A),
+ .bws(2'b00),.we_b(RAM_WEn),.adv_lb(RAM_LDn),
+ .ce1b(RAM_CE1n),.ce2(1'b1),.ce3b(1'b0),
+ .oeb(RAM_OEn),.cenb(RAM_CENn),.mode(RAM_MODE) );
+
+ M24LC024B eeprom_model(.A0(0),.A1(0),.A2(0),.WP(0),
+ .SDA(SDA),.SCL(SCL),.RESET(0));
+
+ wire scl_pad_i, scl_pad_o, scl_pad_oen_o;
+ wire sda_pad_i, sda_pad_o, sda_pad_oen_o;
+
+ pullup p1(SCL);
+ pullup p2(SDA);
+
+ assign scl_pad_i = SCL;
+ assign sda_pad_i = SDA;
+
+ assign SCL = scl_pad_oen_o ? 1'bz : scl_pad_o;
+ assign SDA = sda_pad_oen_o ? 1'bz : sda_pad_o;
+
+ // printf output
+ wire uart_baud_o, uart_tx_o, uart_rx_i;
+ assign uart_rx_i = 1'b1;
+
+ uart_rx uart_rx(.baudclk(uart_baud_o),.rxd(uart_tx_o));
+
+ // End the simulation
+ always @(posedge wb_clk)
+ if((u2_core.m0_we == 1'd1)&&(u2_core.m0_adr == 16'hC2F0))
+ begin
+ $display($time, "Finish called.",);
+ $finish;
+ end
+
+ u2_core #(.RAM_SIZE(32768))
+ u2_core(.dsp_clk (dsp_clk),
+ .wb_clk (wb_clk),
+ .clock_ready (clock_ready),
+ .clk_to_mac (clk_to_mac),
+ .pps_in (pps_in),
+ .leds (leds),
+ .debug (debug[31:0]),
+ .debug_clk (debug_clk[1:0]),
+ .exp_pps_in (exp_pps_in),
+ .exp_pps_out (exp_pps_out),
+ .GMII_COL (GMII_COL),
+ .GMII_CRS (GMII_CRS),
+ .GMII_TXD (GMII_TXD[7:0]),
+ .GMII_TX_EN (GMII_TX_EN),
+ .GMII_TX_ER (GMII_TX_ER),
+ .GMII_GTX_CLK (GMII_GTX_CLK),
+ .GMII_TX_CLK (GMII_TX_CLK),
+ .GMII_RXD (GMII_RXD[7:0]),
+ .GMII_RX_CLK (GMII_RX_CLK),
+ .GMII_RX_DV (GMII_RX_DV),
+ .GMII_RX_ER (GMII_RX_ER),
+ .MDIO (MDIO),
+ .MDC (MDC),
+ .PHY_INTn (PHY_INTn),
+ .PHY_RESETn (PHY_RESETn),
+ .ser_enable (ser_enable),
+ .ser_prbsen (ser_prbsen),
+ .ser_loopen (ser_loopen),
+ .ser_rx_en (ser_rx_en),
+ .ser_tx_clk (ser_tx_clk),
+ .ser_t (ser_t[15:0]),
+ .ser_tklsb (ser_tklsb),
+ .ser_tkmsb (ser_tkmsb),
+ .ser_rx_clk (ser_rx_clk),
+ .ser_r (ser_r[15:0]),
+ .ser_rklsb (ser_rklsb),
+ .ser_rkmsb (ser_rkmsb),
+ .cpld_start (cpld_start),
+ .cpld_mode (cpld_mode),
+ .cpld_done (cpld_done),
+ .cpld_din (cpld_din),
+ .cpld_clk (cpld_clk),
+ .cpld_detached (cpld_detached),
+ .cpld_init_b (1),
+ .por (0),
+ .adc_a (adc_a[13:0]),
+ .adc_ovf_a (adc_ovf_a),
+ .adc_on_a (adc_on_a),
+ .adc_oe_a (adc_oe_a),
+ .adc_b (adc_b[13:0]),
+ .adc_ovf_b (adc_ovf_b),
+ .adc_on_b (adc_on_b),
+ .adc_oe_b (adc_oe_b),
+ .dac_a (dac_a[15:0]),
+ .dac_b (dac_b[15:0]),
+ .scl_pad_i (scl_pad_i),
+ .scl_pad_o (scl_pad_o),
+ .scl_pad_oen_o (scl_pad_oen_o),
+ .sda_pad_i (sda_pad_i),
+ .sda_pad_o (sda_pad_o),
+ .sda_pad_oen_o (sda_pad_oen_o),
+ .clk_en (clk_en[1:0]),
+ .clk_sel (clk_sel[1:0]),
+ .clk_func (clk_func),
+ .clk_status (clk_status),
+ .sclk (sclk),
+ .mosi (mosi),
+ .miso (miso),
+ .sen_clk (sen_clk),
+ .sen_dac (sen_dac),
+ .sen_tx_db (sen_tx_db),
+ .sen_tx_adc (sen_tx_adc),
+ .sen_tx_dac (sen_tx_dac),
+ .sen_rx_db (sen_rx_db),
+ .sen_rx_adc (sen_rx_adc),
+ .sen_rx_dac (sen_rx_dac),
+ .io_tx (io_tx[15:0]),
+ .io_rx (io_rx[15:0]),
+ .RAM_D (RAM_D),
+ .RAM_A (RAM_A),
+ .RAM_CE1n (RAM_CE1n),
+ .RAM_CENn (RAM_CENn),
+ .RAM_CLK (RAM_CLK),
+ .RAM_WEn (RAM_WEn),
+ .RAM_OEn (RAM_OEn),
+ .RAM_LDn (RAM_LDn),
+ .uart_tx_o (uart_tx_o),
+ .uart_rx_i (uart_rx_i),
+ .uart_baud_o (uart_baud_o),
+ .sim_mode (1'b1),
+ .clock_divider (clock_divider)
+ );
+
+endmodule // single_u2_sim
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 05:36:51 +0000