diff --git a/library/util_clkdiv/util_clkdiv_alt.v b/library/util_clkdiv/util_clkdiv_alt.v new file mode 100644 index 000000000..3c79f1fce --- /dev/null +++ b/library/util_clkdiv/util_clkdiv_alt.v @@ -0,0 +1,82 @@ +// *************************************************************************** +// *************************************************************************** +// Copyright 2014(c) Analog Devices, Inc. +// +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without modification, +// are permitted provided that the following conditions are met: +// - Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// - Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in +// the documentation and/or other materials provided with the +// distribution. +// - Neither the name of Analog Devices, Inc. nor the names of its +// contributors may be used to endorse or promote products derived +// from this software without specific prior written permission. +// - The use of this software may or may not infringe the patent rights +// of one or more patent holders. This license does not release you +// from the requirement that you obtain separate licenses from these +// patent holders to use this software. +// - Use of the software either in source or binary form, must be run +// on or directly connected to an Analog Devices Inc. component. +// +// THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, +// INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A +// PARTICULAR PURPOSE ARE DISCLAIMED. +// +// IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, +// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, INTELLECTUAL PROPERTY +// RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR +// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, +// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF +// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// *************************************************************************** +// *************************************************************************** +// Divides the input clock to SEL_0_DIV if clk_sel is 0 or SEL_1_DIV if +// clk_sel is 1. Provides a glitch free output clock +// IP uses BUFR/BUFGCE_DIV and BUFGMUX_CTRL primitives +// *************************************************************************** +// *************************************************************************** + +`timescale 1ns/100ps + +module util_clkdiv_alt #( + parameter SIM_DEVICE = "CYCLONE5", + parameter CLOCK_TYPE = "Global Clock") ( + + input clk, + input reset, + output clk_out, + output reset_out + ); + +reg enable; +reg reset_d1; + +assign reset_out = reset | reset_d1; + +always @(posedge clk) begin + reset_d1 <= reset; +end + +always @(posedge clk) begin + enable <= ~enable; +end + +generate if (SIM_DEVICE == "CYCLONE5") begin + cyclonev_clkena #( + .clock_type ("Global Clock"), + .ena_register_mode ("falling edge"), + .lpm_type ("cyclonev_clkena") + ) clock_divider_by_2 ( + .ena(enable), + .enaout(), + .inclk(clk), +// .clkselect (2'b0), + .outclk(clk_out)); + +end endgenerate + +endmodule // util_clkdiv_alt diff --git a/library/util_clkdiv/util_clkdiv_hw.tcl b/library/util_clkdiv/util_clkdiv_hw.tcl new file mode 100644 index 000000000..310801727 --- /dev/null +++ b/library/util_clkdiv/util_clkdiv_hw.tcl @@ -0,0 +1,25 @@ + +package require -exact qsys 13.0 +source ../scripts/adi_env.tcl +source ../scripts/adi_ip_alt.tcl + + +set_module_property NAME util_clkdiv +set_module_property DESCRIPTION "Clock Division Utility" +set_module_property VERSION 1.0 +set_module_property GROUP "Analog Devices" +set_module_property DISPLAY_NAME util_clkdiv + +# files + +add_fileset quartus_synth QUARTUS_SYNTH "" "Quartus Synthesis" +set_fileset_property quartus_synth TOP_LEVEL util_clkdiv_alt +add_fileset_file util_clkdiv_alt.v VERILOG PATH util_clkdiv_alt.v TOP_LEVEL_FILE + +# defaults + +ad_alt_intf clock clk input 1 +ad_alt_intf reset reset input 1 if_clk +ad_alt_intf clock clk_out output 1 +ad_alt_intf reset reset_out output 1 if_clk_out +