// // 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 u1plus (input CLK_FPGA_P, input CLK_FPGA_N, // Diff output [2:0] debug_led, output [31:0] debug, output [1:0] debug_clk, output FPGA_TXD, input FPGA_RXD, // GPIF inout [15:0] GPIF_D, input [3:0] GPIF_CTL, output [3:0] GPIF_RDY, output FX2_PA7_FLAGD, output FX2_PA6_PKTEND, output FX2_PA2_SLOE, input IFCLK, inout SDA_FPGA, inout SCL_FPGA, // I2C output SCLK_TX_DB, output SEN_TX_DB, output MOSI_TX_DB, input MISO_TX_DB, // DB TX SPI output SCLK_RX_DB, output SEN_RX_DB, output MOSI_RX_DB, input MISO_RX_DB, // DB TX SPI output SCLK_CODEC, output SEN_CODEC, output MOSI_CODEC, input MISO_CODEC, // AD9862 main SPI input cgen_st_status, input cgen_st_ld, input cgen_st_refmon, output cgen_sync_b, output cgen_ref_sel, inout [15:0] io_tx, inout [15:0] io_rx, output [13:0] dac, output TXSYNC, output TXBLANK, input [11:0] adc, input RXSYNC, input PPS_IN, input reset_n, output reset_codec ); assign reset_codec = 1; // Believed to be active low // ///////////////////////////////////////////////////////////////////////// // Clocking wire clk_fpga, clk_fpga_in, reset; IBUFGDS #(.IOSTANDARD("LVDS_33"), .DIFF_TERM("TRUE")) clk_fpga_pin (.O(clk_fpga_in),.I(CLK_FPGA_P),.IB(CLK_FPGA_N)); BUFG clk_fpga_BUFG (.I(clk_fpga_in), .O(clk_fpga)); reset_sync reset_sync(.clk(clk_fpga), .reset_in(~reset_n), .reset_out(reset)); // ///////////////////////////////////////////////////////////////////////// // SPI wire mosi, sclk, miso; assign { SCLK_TX_DB, MOSI_TX_DB } = ~SEN_TX_DB ? {sclk,mosi} : 2'b0; assign { SCLK_RX_DB, MOSI_RX_DB } = ~SEN_RX_DB ? {sclk,mosi} : 2'b0; assign { SCLK_CODEC, MOSI_CODEC } = ~SEN_CODEC ? {sclk,mosi} : 2'b0; assign miso = (~SEN_TX_DB & MISO_TX_DB) | (~SEN_RX_DB & MISO_RX_DB) | (~SEN_CODEC & MISO_CODEC); // ///////////////////////////////////////////////////////////////////////// // TX DAC -- handle the interleaved data bus to DAC, with clock doubling DLL assign TXBLANK = 0; wire [13:0] tx_i, 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(dac[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(tx_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 // ///////////////////////////////////////////////////////////////////////// // RX ADC -- handles deinterleaving reg [11:0] rx_i, rx_q; wire [11:0] rx_a, rx_b; genvar j; generate for(j=0;j<12;j=j+1) begin : gen_adcin IDDR2 #(.DDR_ALIGNMENT("NONE"), // Sets output alignment to "NONE", "C0" or "C1" .INIT_Q0(1'b0), // Sets initial state of the Q0 output to 1’b0 or 1’b1 .INIT_Q1(1'b0), // Sets initial state of the Q1 output to 1’b0 or 1’b1 .SRTYPE("SYNC")) // Specifies "SYNC" or "ASYNC" set/reset IDDR2_inst (.Q0(rx_a[j]), // 1-bit output captured with C0 clock .Q1(rx_b[j]), // 1-bit output captured with C1 clock .C0(clk_fpga), // 1-bit clock input .C1(~clk_fpga), // 1-bit clock input .CE(1'b1), // 1-bit clock enable input .D(adc[j]), // 1-bit DDR data input .R(1'b0), // 1-bit reset input .S(1'b0)); // 1-bit set input end // block: gen_adcin endgenerate IDDR2 #(.DDR_ALIGNMENT("NONE"), // Sets output alignment to "NONE", "C0" or "C1" .INIT_Q0(1'b0), // Sets initial state of the Q0 output to 1’b0 or 1’b1 .INIT_Q1(1'b0), // Sets initial state of the Q1 output to 1’b0 or 1’b1 .SRTYPE("SYNC")) // Specifies "SYNC" or "ASYNC" set/reset IDDR2_sync (.Q0(rxsync_0), // 1-bit output captured with C0 clock .Q1(rxsync_1), // 1-bit output captured with C1 clock .C0(clk_fpga), // 1-bit clock input .C1(~clk_fpga), // 1-bit clock input .CE(1'b1), // 1-bit clock enable input .D(RXSYNC), // 1-bit DDR data input .R(1'b0), // 1-bit reset input .S(1'b0)); // 1-bit set input always @(posedge clk_fpga) if(rxsync_0) begin rx_i <= rx_b; rx_q <= rx_a; end else begin rx_i <= rx_a; rx_q <= rx_b; end // ///////////////////////////////////////////////////////////////////////// // Main U1E Core u1plus_core u1p_c(.clk_fpga(clk_fpga), .rst_fpga(reset), .debug_led(debug_led), .debug(debug), .debug_clk(debug_clk), .debug_txd(FPGA_TXD), .debug_rxd(FPGA_RXD), .gpif_d(GPIF_D), .gpif_ctl(GPIF_CTL), .gpif_rdy(GPIF_RDY), .gpif_misc({FX2_PA7_FLAGD,FX2_PA6_PKTEND,FX2_PA2_SLOE}), .gpif_clk(IFCLK), .db_sda(SDA_FPGA), .db_scl(SCL_FPGA), .sclk(sclk), .sen({SEN_CODEC,SEN_TX_DB,SEN_RX_DB}), .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), .io_tx(io_tx), .io_rx(io_rx), .tx_i(tx_i), .tx_q(tx_q), .rx_i(rx_i), .rx_q(rx_q), .pps_in(PPS_IN) ); endmodule // u1plus