pluto_hdl_adi/library/axi_clkgen/axi_clkgen.v

188 lines
5.7 KiB
Verilog

// ***************************************************************************
// ***************************************************************************
// Copyright 2014 - 2017 (c) Analog Devices, Inc. All rights reserved.
//
// Each core or library found in this collection may have its own licensing terms.
// The user should keep this in in mind while exploring these cores.
//
// Redistribution and use in source and binary forms,
// with or without modification of this file, are permitted under the terms of either
// (at the option of the user):
//
// 1. The GNU General Public License version 2 as published by the
// Free Software Foundation, which can be found in the top level directory, or at:
// https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html
//
// OR
//
// 2. An ADI specific BSD license as noted in the top level directory, or on-line at:
// https://github.com/analogdevicesinc/hdl/blob/dev/LICENSE
//
// ***************************************************************************
// ***************************************************************************
// software programmable clock generator (still needs a reference input!)
module axi_clkgen #(
parameter ID = 0,
parameter DEVICE_TYPE = 0,
parameter real CLKIN_PERIOD = 5.000,
parameter real CLKIN2_PERIOD = 5.000,
parameter integer VCO_DIV = 11,
parameter real VCO_MUL = 49.000,
parameter real CLK0_DIV = 6.000,
parameter real CLK0_PHASE = 0.000,
parameter integer CLK1_DIV = 6,
parameter real CLK1_PHASE = 0.000) (
// clocks
input clk,
input clk2,
output clk_0,
output clk_1,
// axi interface
input s_axi_aclk,
input s_axi_aresetn,
input s_axi_awvalid,
input [31:0] s_axi_awaddr,
output s_axi_awready,
input s_axi_wvalid,
input [31:0] s_axi_wdata,
input [ 3:0] s_axi_wstrb,
output s_axi_wready,
output s_axi_bvalid,
output [ 1:0] s_axi_bresp,
input s_axi_bready,
input s_axi_arvalid,
input [31:0] s_axi_araddr,
output s_axi_arready,
output s_axi_rvalid,
output [31:0] s_axi_rdata,
output [ 1:0] s_axi_rresp,
input s_axi_rready,
input [ 2:0] s_axi_awprot,
input [ 2:0] s_axi_arprot);
// reset and clocks
wire mmcm_rst;
wire clk_sel;
wire up_rstn;
wire up_clk;
// internal signals
wire up_drp_sel_s;
wire up_drp_wr_s;
wire [11:0] up_drp_addr_s;
wire [15:0] up_drp_wdata_s;
wire [15:0] up_drp_rdata_s;
wire up_drp_ready_s;
wire up_drp_locked_s;
wire up_wreq_s;
wire [13:0] up_waddr_s;
wire [31:0] up_wdata_s;
wire up_wack_s;
wire up_rreq_s;
wire [13:0] up_raddr_s;
wire [31:0] up_rdata_s;
wire up_rack_s;
// signal name changes
assign up_clk = s_axi_aclk;
assign up_rstn = s_axi_aresetn;
// up bus interface
up_axi i_up_axi (
.up_rstn (up_rstn),
.up_clk (up_clk),
.up_axi_awvalid (s_axi_awvalid),
.up_axi_awaddr (s_axi_awaddr),
.up_axi_awready (s_axi_awready),
.up_axi_wvalid (s_axi_wvalid),
.up_axi_wdata (s_axi_wdata),
.up_axi_wstrb (s_axi_wstrb),
.up_axi_wready (s_axi_wready),
.up_axi_bvalid (s_axi_bvalid),
.up_axi_bresp (s_axi_bresp),
.up_axi_bready (s_axi_bready),
.up_axi_arvalid (s_axi_arvalid),
.up_axi_araddr (s_axi_araddr),
.up_axi_arready (s_axi_arready),
.up_axi_rvalid (s_axi_rvalid),
.up_axi_rresp (s_axi_rresp),
.up_axi_rdata (s_axi_rdata),
.up_axi_rready (s_axi_rready),
.up_wreq (up_wreq_s),
.up_waddr (up_waddr_s),
.up_wdata (up_wdata_s),
.up_wack (up_wack_s),
.up_rreq (up_rreq_s),
.up_raddr (up_raddr_s),
.up_rdata (up_rdata_s),
.up_rack (up_rack_s));
// processor interface
up_clkgen i_up_clkgen (
.mmcm_rst (mmcm_rst),
.clk_sel (clk_sel),
.up_drp_sel (up_drp_sel_s),
.up_drp_wr (up_drp_wr_s),
.up_drp_addr (up_drp_addr_s),
.up_drp_wdata (up_drp_wdata_s),
.up_drp_rdata (up_drp_rdata_s),
.up_drp_ready (up_drp_ready_s),
.up_drp_locked (up_drp_locked_s),
.up_rstn (up_rstn),
.up_clk (up_clk),
.up_wreq (up_wreq_s),
.up_waddr (up_waddr_s),
.up_wdata (up_wdata_s),
.up_wack (up_wack_s),
.up_rreq (up_rreq_s),
.up_raddr (up_raddr_s),
.up_rdata (up_rdata_s),
.up_rack (up_rack_s));
// mmcm instantiations
ad_mmcm_drp #(
.MMCM_DEVICE_TYPE (DEVICE_TYPE),
.MMCM_CLKIN_PERIOD (CLKIN_PERIOD),
.MMCM_CLKIN2_PERIOD (CLKIN2_PERIOD),
.MMCM_VCO_DIV (VCO_DIV),
.MMCM_VCO_MUL (VCO_MUL),
.MMCM_CLK0_DIV (CLK0_DIV),
.MMCM_CLK0_PHASE (CLK0_PHASE),
.MMCM_CLK1_DIV (CLK1_DIV),
.MMCM_CLK1_PHASE (CLK1_PHASE))
i_mmcm_drp (
.clk (clk),
.clk2 (clk2),
.clk_sel(clk_sel),
.mmcm_rst (mmcm_rst),
.mmcm_clk_0 (clk_0),
.mmcm_clk_1 (clk_1),
.mmcm_clk_2 (),
.up_clk (up_clk),
.up_rstn (up_rstn),
.up_drp_sel (up_drp_sel_s),
.up_drp_wr (up_drp_wr_s),
.up_drp_addr (up_drp_addr_s),
.up_drp_wdata (up_drp_wdata_s),
.up_drp_rdata (up_drp_rdata_s),
.up_drp_ready (up_drp_ready_s),
.up_drp_locked (up_drp_locked_s));
endmodule
// ***************************************************************************
// ***************************************************************************