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//
// Copyright 2011-2012 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 <http://www.gnu.org/licenses/>.
//
`timescale 1ns / 1ps
//////////////////////////////////////////////////////////////////////////////////
module B100
(input CLK_FPGA_P, input CLK_FPGA_N, // Diff
output [2:0] debug_led, output [31:0] debug, output [1:0] debug_clk,
// GPIF
inout [15:0] GPIF_D, input [3:0] GPIF_CTL, output GPIF_SLOE,
output [1:0] GPIF_ADR, output GPIF_SLWR, output GPIF_SLRD, output GPIF_PKTEND,
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,
input ext_reset
);
assign reset_codec = 1; // Believed to be active low
// /////////////////////////////////////////////////////////////////////////
// Clocking
wire clk_fpga, clk_fpga_in, reset;
wire gpif_clk = IFCLK;
wire gpif_rst;
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) | (~ext_reset)), .reset_out(reset));
reset_sync reset_sync_gpif(.clk(gpif_clk), .reset_in((~reset_n) | (~ext_reset)), .reset_out(gpif_rst));
// /////////////////////////////////////////////////////////////////////////
// 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
wire rxsync_0, rxsync_1;
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 Core
wire [35:0] rx_data, tx_data, ctrl_data, resp_data;
wire rx_src_rdy, rx_dst_rdy, tx_src_rdy, tx_dst_rdy, resp_src_rdy, resp_dst_rdy, ctrl_src_rdy, ctrl_dst_rdy;
wire dsp_rx_run, dsp_tx_run;
wire [7:0] sen8;
assign {SEN_CODEC,SEN_TX_DB,SEN_RX_DB} = sen8[2:0];
wire [31:0] core_debug;
assign debug_led = {dsp_tx_run, dsp_rx_run, cgen_st_ld};
wire cgen_sync;
assign { cgen_sync_b, cgen_ref_sel } = {~cgen_sync, 1'b1};
u1plus_core #(
`ifdef NUM_RX_DSP
.NUM_RX_DSPS(`NUM_RX_DSP),
`else
.NUM_RX_DSPS(1),
`endif
.DSP_RX_XTRA_FIFOSIZE(11),
.DSP_TX_XTRA_FIFOSIZE(12),
.USE_PACKET_PADDER(1)
) core(
.clk(clk_fpga), .reset(reset),
.debug(core_debug), .debug_clk(debug_clk),
.rx_data(rx_data), .rx_src_rdy(rx_src_rdy), .rx_dst_rdy(rx_dst_rdy),
.tx_data(tx_data), .tx_src_rdy(tx_src_rdy), .tx_dst_rdy(tx_dst_rdy),
.ctrl_data(ctrl_data), .ctrl_src_rdy(ctrl_src_rdy), .ctrl_dst_rdy(ctrl_dst_rdy),
.resp_data(resp_data), .resp_src_rdy(resp_src_rdy), .resp_dst_rdy(resp_dst_rdy),
.dsp_rx_run(dsp_rx_run), .dsp_tx_run(dsp_tx_run),
.clock_sync(cgen_sync),
.db_sda(SDA_FPGA), .db_scl(SCL_FPGA),
.sclk(sclk), .sen(sen8), .mosi(mosi), .miso(miso),
.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) );
// /////////////////////////////////////////////////////////////////////////
// Interface from host to/from GPIF
wire [31:0] gpif_debug;
slave_fifo slave_fifo (.gpif_clk(gpif_clk), .gpif_rst(gpif_rst), .gpif_d(GPIF_D),
.gpif_ctl(GPIF_CTL), .sloe(GPIF_SLOE), .slwr(GPIF_SLWR), .slrd(GPIF_SLRD),
.pktend(GPIF_PKTEND), .fifoadr(GPIF_ADR),
.fifo_clk(clk_fpga), .fifo_rst(reset),
.rx_data(rx_data), .rx_src_rdy(rx_src_rdy), .rx_dst_rdy(rx_dst_rdy),
.tx_data(tx_data), .tx_src_rdy(tx_src_rdy), .tx_dst_rdy(tx_dst_rdy),
.ctrl_data(ctrl_data), .ctrl_src_rdy(ctrl_src_rdy), .ctrl_dst_rdy(ctrl_dst_rdy),
.resp_data(resp_data), .resp_src_rdy(resp_src_rdy), .resp_dst_rdy(resp_dst_rdy),
.debug(gpif_debug));
//assign debug = gpif_debug;
assign debug = core_debug;
endmodule // B100
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