pluto_hdl_adi/library/altera/common/ad_serdes_clk.v

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// ***************************************************************************
// ***************************************************************************
// Copyright 2014 - 2017 (c) Analog Devices, Inc. All rights reserved.
//
// In this HDL repository, there are many different and unique modules, consisting
// of various HDL (Verilog or VHDL) components. The individual modules are
// developed independently, and may be accompanied by separate and unique license
// terms.
//
// The user should read each of these license terms, and understand the
// freedoms and responsabilities that he or she has by using this source/core.
//
// This core 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.
//
// Redistribution and use of source or resulting binaries, with or without modification
// of this file, are permitted under one of the following two license terms:
//
// 1. The GNU General Public License version 2 as published by the
// Free Software Foundation, which can be found in the top level directory
// of this repository (LICENSE_GPL2), and also online at:
// <https://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
//
// OR
//
// 2. An ADI specific BSD license, which can be found in the top level directory
// of this repository (LICENSE_ADIBSD), and also on-line at:
// https://github.com/analogdevicesinc/hdl/blob/master/LICENSE_ADIBSD
// This will allow to generate bit files and not release the source code,
// as long as it attaches to an ADI device.
//
// ***************************************************************************
// ***************************************************************************
`timescale 1ps/1ps
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module __ad_serdes_clk__ #(
// parameters
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parameter DEVICE_TYPE = 0,
parameter DDR_OR_SDR_N = 1,
parameter SERDES_FACTOR = 8,
parameter MMCM_OR_BUFR_N = 1,
parameter MMCM_CLKIN_PERIOD = 1.667,
parameter MMCM_VCO_DIV = 6,
parameter MMCM_VCO_MUL = 12.000,
parameter MMCM_CLK0_DIV = 2.000,
parameter MMCM_CLK1_DIV = 6) (
// clock and divided clock
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input rst,
input clk_in_p,
input clk_in_n,
output clk,
output div_clk,
output out_clk,
output loaden,
output [ 7:0] phase,
// drp interface
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input up_clk,
input up_rstn,
input up_drp_sel,
input up_drp_wr,
input [11:0] up_drp_addr,
input [31:0] up_drp_wdata,
output [31:0] up_drp_rdata,
output up_drp_ready,
output up_drp_locked);
// local parameter
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localparam ARRIA10 = 0;
localparam CYCLONE5 = 1;
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// internal registers
reg up_drp_sel_int = 'd0;
reg up_drp_rd_int = 'd0;
reg up_drp_wr_int = 'd0;
reg [ 8:0] up_drp_addr_int = 'd0;
reg [31:0] up_drp_wdata_int = 'd0;
reg [31:0] up_drp_rdata_int = 'd0;
reg up_drp_ready_int = 'd0;
reg up_drp_locked_int_m = 'd0;
reg up_drp_locked_int = 'd0;
// internal signals
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wire up_drp_reset;
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wire [31:0] up_drp_rdata_int_s;
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wire up_drp_busy_int_s;
wire up_drp_locked_int_s;
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wire loaden_s;
wire clk_s;
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// defaults
assign up_drp_reset = ~up_rstn;
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assign out_clk = div_clk;
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assign up_drp_rdata = up_drp_rdata_int;
assign up_drp_ready = up_drp_ready_int;
assign up_drp_locked = up_drp_locked_int;
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always @(negedge up_rstn or posedge up_clk) begin
if (up_rstn == 1'b0) begin
up_drp_sel_int <= 1'b0;
up_drp_rd_int <= 1'b0;
up_drp_wr_int <= 1'b0;
up_drp_addr_int <= 9'd0;
up_drp_wdata_int <= 32'd0;
up_drp_rdata_int <= 32'd0;
up_drp_ready_int <= 1'b0;
up_drp_locked_int_m <= 1'd0;
up_drp_locked_int <= 1'd0;
end else begin
if (up_drp_sel_int == 1'b1) begin
if (up_drp_busy_int_s == 1'b0) begin
up_drp_sel_int <= 1'b0;
up_drp_rd_int <= 1'b0;
up_drp_wr_int <= 1'b0;
up_drp_addr_int <= 9'd0;
up_drp_wdata_int <= 32'd0;
up_drp_rdata_int <= up_drp_rdata_int_s;
up_drp_ready_int <= 1'b1;
end
end else if (up_drp_sel == 1'b1) begin
up_drp_sel_int <= 1'b1;
up_drp_rd_int <= ~up_drp_wr;
up_drp_wr_int <= up_drp_wr;
up_drp_addr_int <= up_drp_addr[8:0];
up_drp_wdata_int <= up_drp_wdata;
up_drp_rdata_int <= 32'd0;
up_drp_ready_int <= 1'b0;
end else begin
up_drp_sel_int <= 1'b0;
up_drp_rd_int <= 1'b0;
up_drp_wr_int <= 1'b0;
up_drp_addr_int <= 9'd0;
up_drp_wdata_int <= 32'd0;
up_drp_rdata_int <= 32'd0;
up_drp_ready_int <= 1'b0;
end
up_drp_locked_int_m <= up_drp_locked_int_s;
up_drp_locked_int <= up_drp_locked_int_m;
end
end
generate
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if (DEVICE_TYPE == ARRIA10) begin
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__ad_serdes_clk_1__ i_core (
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.rst_reset (rst),
.ref_clk_clk (clk_in_p),
.locked_export (up_drp_locked_int_s),
.hs_phase_phout (phase),
.hs_clk_lvds_clk (clk),
.loaden_loaden (loaden),
.ls_clk_clk (div_clk),
.drp_clk_clk (up_clk),
.drp_rst_reset (up_drp_reset),
.pll_reconfig_waitrequest (up_drp_busy_int_s),
.pll_reconfig_read (up_drp_rd_int),
.pll_reconfig_write (up_drp_wr_int),
.pll_reconfig_readdata (up_drp_rdata_int_s),
.pll_reconfig_address (up_drp_addr_int),
.pll_reconfig_writedata (up_drp_wdata_int));
end
endgenerate
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generate
if (DEVICE_TYPE == CYCLONE5) begin
assign phase = 8'd0;
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__ad_serdes_clk_1__ i_core (
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.rst_reset (rst),
.ref_clk_clk (clk_in_p),
.locked_export (up_drp_locked_int_s),
.hs_clk_clk (clk_s),
.loaden_clk (loaden_s),
.ls_clk_clk (div_clk),
.drp_clk_clk (up_clk),
.drp_rst_reset (up_drp_reset),
.pll_reconfig_waitrequest (up_drp_busy_int_s),
.pll_reconfig_read (up_drp_rd_int),
.pll_reconfig_write (up_drp_wr_int),
.pll_reconfig_readdata (up_drp_rdata_int_s),
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.pll_reconfig_address (up_drp_addr_int[5:0]),
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.pll_reconfig_writedata (up_drp_wdata_int));
cyclonev_pll_lvds_output #(
.pll_loaden_enable_disable ("true"),
.pll_lvdsclk_enable_disable ("true"))
i_clk_buf (
.ccout ({loaden_s, clk_s}),
.loaden (loaden),
.lvdsclk (clk));
end
endgenerate
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endmodule
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// ***************************************************************************
// ***************************************************************************