225 lines
6.7 KiB
Verilog
225 lines
6.7 KiB
Verilog
// ***************************************************************************
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// ***************************************************************************
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// Copyright 2011(c) Analog Devices, Inc.
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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// - Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// - Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in
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// the documentation and/or other materials provided with the
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// distribution.
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// - Neither the name of Analog Devices, Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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// - The use of this software may or may not infringe the patent rights
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// of one or more patent holders. This license does not release you
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// from the requirement that you obtain separate licenses from these
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// patent holders to use this software.
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// - Use of the software either in source or binary form, must be run
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// on or directly connected to an Analog Devices Inc. component.
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//
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// THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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// INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A
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// PARTICULAR PURPOSE ARE DISCLAIMED.
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//
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// IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, INTELLECTUAL PROPERTY
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// RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// ***************************************************************************
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// ***************************************************************************
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// software programmable clock generator (still needs a reference input!)
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module axi_clkgen (
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// clocks
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clk,
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clk2,
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clk_0,
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clk_1,
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// axi interface
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s_axi_aclk,
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s_axi_aresetn,
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s_axi_awvalid,
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s_axi_awaddr,
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s_axi_awready,
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s_axi_wvalid,
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s_axi_wdata,
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s_axi_wstrb,
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s_axi_wready,
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s_axi_bvalid,
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s_axi_bresp,
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s_axi_bready,
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s_axi_arvalid,
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s_axi_araddr,
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s_axi_arready,
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s_axi_rvalid,
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s_axi_rdata,
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s_axi_rresp,
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s_axi_rready);
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// parameters
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parameter ID = 0;
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parameter DEVICE_TYPE = 0;
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parameter CLKIN_PERIOD = 5.0;
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parameter CLKIN2_PERIOD = 5.0;
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parameter VCO_DIV = 11;
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parameter VCO_MUL = 49;
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parameter CLK0_DIV = 6;
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parameter CLK1_DIV = 6;
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// clocks
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input clk;
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input clk2;
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output clk_0;
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output clk_1;
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// axi interface
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input s_axi_aclk;
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input s_axi_aresetn;
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input s_axi_awvalid;
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input [31:0] s_axi_awaddr;
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output s_axi_awready;
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input s_axi_wvalid;
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input [31:0] s_axi_wdata;
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input [ 3:0] s_axi_wstrb;
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output s_axi_wready;
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output s_axi_bvalid;
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output [ 1:0] s_axi_bresp;
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input s_axi_bready;
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input s_axi_arvalid;
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input [31:0] s_axi_araddr;
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output s_axi_arready;
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output s_axi_rvalid;
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output [31:0] s_axi_rdata;
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output [ 1:0] s_axi_rresp;
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input s_axi_rready;
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// reset and clocks
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wire mmcm_rst;
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wire clk_sel;
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wire up_rstn;
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wire up_clk;
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// internal signals
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wire up_drp_sel_s;
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wire up_drp_wr_s;
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wire [11:0] up_drp_addr_s;
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wire [15:0] up_drp_wdata_s;
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wire [15:0] up_drp_rdata_s;
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wire up_drp_ready_s;
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wire up_drp_locked_s;
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wire up_wreq_s;
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wire [13:0] up_waddr_s;
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wire [31:0] up_wdata_s;
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wire up_wack_s;
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wire up_rreq_s;
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wire [13:0] up_raddr_s;
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wire [31:0] up_rdata_s;
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wire up_rack_s;
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// signal name changes
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assign up_clk = s_axi_aclk;
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assign up_rstn = s_axi_aresetn;
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// up bus interface
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up_axi i_up_axi (
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.up_rstn (up_rstn),
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.up_clk (up_clk),
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.up_axi_awvalid (s_axi_awvalid),
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.up_axi_awaddr (s_axi_awaddr),
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.up_axi_awready (s_axi_awready),
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.up_axi_wvalid (s_axi_wvalid),
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.up_axi_wdata (s_axi_wdata),
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.up_axi_wstrb (s_axi_wstrb),
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.up_axi_wready (s_axi_wready),
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.up_axi_bvalid (s_axi_bvalid),
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.up_axi_bresp (s_axi_bresp),
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.up_axi_bready (s_axi_bready),
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.up_axi_arvalid (s_axi_arvalid),
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.up_axi_araddr (s_axi_araddr),
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.up_axi_arready (s_axi_arready),
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.up_axi_rvalid (s_axi_rvalid),
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.up_axi_rresp (s_axi_rresp),
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.up_axi_rdata (s_axi_rdata),
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.up_axi_rready (s_axi_rready),
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.up_wreq (up_wreq_s),
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.up_waddr (up_waddr_s),
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.up_wdata (up_wdata_s),
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.up_wack (up_wack_s),
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.up_rreq (up_rreq_s),
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.up_raddr (up_raddr_s),
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.up_rdata (up_rdata_s),
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.up_rack (up_rack_s));
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// processor interface
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up_clkgen i_up_clkgen (
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.mmcm_rst (mmcm_rst),
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.clk_sel (clk_sel),
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.up_drp_sel (up_drp_sel_s),
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.up_drp_wr (up_drp_wr_s),
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.up_drp_addr (up_drp_addr_s),
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.up_drp_wdata (up_drp_wdata_s),
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.up_drp_rdata (up_drp_rdata_s),
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.up_drp_ready (up_drp_ready_s),
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.up_drp_locked (up_drp_locked_s),
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.up_rstn (up_rstn),
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.up_clk (up_clk),
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.up_wreq (up_wreq_s),
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.up_waddr (up_waddr_s),
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.up_wdata (up_wdata_s),
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.up_wack (up_wack_s),
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.up_rreq (up_rreq_s),
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.up_raddr (up_raddr_s),
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.up_rdata (up_rdata_s),
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.up_rack (up_rack_s));
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// mmcm instantiations
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ad_mmcm_drp #(
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.MMCM_DEVICE_TYPE (DEVICE_TYPE),
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.MMCM_CLKIN_PERIOD (CLKIN_PERIOD),
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.MMCM_CLKIN2_PERIOD (CLKIN2_PERIOD),
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.MMCM_VCO_DIV (VCO_DIV),
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.MMCM_VCO_MUL (VCO_MUL),
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.MMCM_CLK0_DIV (CLK0_DIV),
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.MMCM_CLK1_DIV (CLK1_DIV))
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i_mmcm_drp (
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.clk (clk),
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.clk2 (clk2),
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.mmcm_rst (mmcm_rst),
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.clk_sel(clk_sel),
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.mmcm_clk_0 (clk_0),
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.mmcm_clk_1 (clk_1),
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.up_clk (up_clk),
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.up_rstn (up_rstn),
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.up_drp_sel (up_drp_sel_s),
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.up_drp_wr (up_drp_wr_s),
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.up_drp_addr (up_drp_addr_s),
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.up_drp_wdata (up_drp_wdata_s),
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.up_drp_rdata (up_drp_rdata_s),
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.up_drp_ready (up_drp_ready_s),
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.up_drp_locked (up_drp_locked_s));
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endmodule
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// ***************************************************************************
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// ***************************************************************************
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