// // Copyright 2011 Ettus Research LLC // // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program. If not, see . // `timescale 1ns / 1ps ////////////////////////////////////////////////////////////////////////////////// module u1e (input CLK_FPGA_P, input CLK_FPGA_N, // Diff output [3:0] debug_led, output [31:0] debug, output [1:0] debug_clk, input debug_pb, output FPGA_TXD, input FPGA_RXD, output fpga_txd1, input fpga_rxd1, input overo_txd1, output overo_rxd1, // GPMC input EM_CLK, inout [15:0] EM_D, input [10:1] EM_A, input [1:0] EM_NBE, input EM_WAIT0, input EM_NCS4, input EM_NCS5, input EM_NCS6, input EM_NWE, input EM_NOE, inout db_sda, inout db_scl, // I2C output db_sclk_tx, output db_sen_tx, output db_mosi_tx, input db_miso_tx, // DB TX SPI output db_sclk_rx, output db_sen_rx, output db_mosi_rx, input db_miso_rx, // DB TX SPI output sclk_codec, output sen_codec, output mosi_codec, input miso_codec, // AD9862 main SPI output cgen_sclk, output cgen_sen_b, output cgen_mosi, input cgen_miso, // Clock gen SPI input cgen_st_status, input cgen_st_ld, input cgen_st_refmon, output cgen_sync_b, output cgen_ref_sel, input overo_gpio65, input overo_gpio128, input overo_gpio145, output overo_gpio147, //aux SPI output overo_gpio144, output overo_gpio146, // Fifo controls input overo_gpio0, input overo_gpio14, input overo_gpio21, input overo_gpio22, // Misc GPIO input overo_gpio23, input overo_gpio64, input overo_gpio127, // Misc GPIO input overo_gpio176, input overo_gpio163, input overo_gpio170, // Misc GPIO inout [15:0] io_tx, inout [15:0] io_rx, output [13:0] TX, output TXSYNC, output TXBLANK, input [11:0] DA, input [11:0] DB, input RXSYNC, input PPS_IN ); // ///////////////////////////////////////////////////////////////////////// // Clocking wire clk_fpga; IBUFGDS #(.IOSTANDARD("LVDS_33"), .DIFF_TERM("TRUE")) clk_fpga_pin (.O(clk_fpga),.I(CLK_FPGA_P),.IB(CLK_FPGA_N)); // ///////////////////////////////////////////////////////////////////////// // UART level conversion assign fpga_txd1 = overo_txd1; assign overo_rxd1 = fpga_rxd1; // SPI wire mosi, sclk, miso; assign { db_sclk_tx, db_mosi_tx } = ~db_sen_tx ? {sclk,mosi} : 2'b0; assign { db_sclk_rx, db_mosi_rx } = ~db_sen_rx ? {sclk,mosi} : 2'b0; assign { sclk_codec, mosi_codec } = ~sen_codec ? {sclk,mosi} : 2'b0; //assign { cgen_sclk, cgen_mosi } = ~cgen_sen_b ? {sclk,mosi} : 2'b0; //replaced by aux spi assign miso = (~db_sen_tx & db_miso_tx) | (~db_sen_rx & db_miso_rx) | (~sen_codec & miso_codec) | (~cgen_sen_b & cgen_miso); //assign the aux spi to the cgen (bypasses wishbone) assign cgen_sclk = overo_gpio65; assign cgen_sen_b = overo_gpio128; assign cgen_mosi = overo_gpio145; wire proc_int; //re-purpose gpio for interrupt when we are not using aux spi assign overo_gpio147 = (cgen_sen_b == 1'b0)? cgen_miso : proc_int; wire _cgen_sen_b; //assign cgen_sen_b = _cgen_sen_b; //replaced by aux spi // ///////////////////////////////////////////////////////////////////////// // TX DAC -- handle the interleaved data bus to DAC, with clock doubling DLL assign TXBLANK = 0; wire [13:0] tx_i, tx_q; reg[13:0] delay_q; always @(posedge clk_fpga) delay_q <= tx_q; genvar i; generate for(i=0;i<14;i=i+1) begin : gen_dacout ODDR2 #(.DDR_ALIGNMENT("NONE"), // Sets output alignment to "NONE", "C0" or "C1" .INIT(1'b0), // Sets initial state of the Q output to 1'b0 or 1'b1 .SRTYPE("SYNC")) // Specifies "SYNC" or "ASYNC" set/reset ODDR2_inst (.Q(TX[i]), // 1-bit DDR output data .C0(clk_fpga), // 1-bit clock input .C1(~clk_fpga), // 1-bit clock input .CE(1'b1), // 1-bit clock enable input .D0(tx_i[i]), // 1-bit data input (associated with C0) .D1(delay_q[i]), // 1-bit data input (associated with C1) .R(1'b0), // 1-bit reset input .S(1'b0)); // 1-bit set input end // block: gen_dacout endgenerate ODDR2 #(.DDR_ALIGNMENT("NONE"), // Sets output alignment to "NONE", "C0" or "C1" .INIT(1'b0), // Sets initial state of the Q output to 1'b0 or 1'b1 .SRTYPE("SYNC")) // Specifies "SYNC" or "ASYNC" set/reset ODDR2_txsnc (.Q(TXSYNC), // 1-bit DDR output data .C0(clk_fpga), // 1-bit clock input .C1(~clk_fpga), // 1-bit clock input .CE(1'b1), // 1-bit clock enable input .D0(1'b0), // 1-bit data input (associated with C0) .D1(1'b1), // 1-bit data input (associated with C1) .R(1'b0), // 1-bit reset input .S(1'b0)); // 1-bit set input // ///////////////////////////////////////////////////////////////////////// // Main U1E Core u1e_core u1e_core(.clk_fpga(clk_fpga), .rst_fpga(~debug_pb), .debug_led(debug_led), .debug(debug), .debug_clk(debug_clk), .debug_txd(FPGA_TXD), .debug_rxd(FPGA_RXD), .EM_CLK(EM_CLK), .EM_D(EM_D), .EM_A(EM_A), .EM_NBE(EM_NBE), .EM_WAIT0(EM_WAIT0), .EM_NCS4(EM_NCS4), .EM_NCS5(EM_NCS5), .EM_NCS6(EM_NCS6), .EM_NWE(EM_NWE), .EM_NOE(EM_NOE), .db_sda(db_sda), .db_scl(db_scl), .sclk(sclk), .sen({_cgen_sen_b,sen_codec,db_sen_tx,db_sen_rx}), .mosi(mosi), .miso(miso), .cgen_st_status(cgen_st_status), .cgen_st_ld(cgen_st_ld),.cgen_st_refmon(cgen_st_refmon), .cgen_sync_b(cgen_sync_b), .cgen_ref_sel(cgen_ref_sel), .tx_have_space(overo_gpio144), .rx_have_data(overo_gpio146), .io_tx(io_tx), .io_rx(io_rx), .tx_i(tx_i), .tx_q(tx_q), .rx_i(DA), .rx_q(DB), .pps_in(PPS_IN), .proc_int(proc_int) ); // ///////////////////////////////////////////////////////////////////////// // Local Debug // assign debug_clk = {clk_fpga, clk_2x }; // assign debug = { TXSYNC, TXBLANK, TX }; endmodule // u1e