pluto_hdl_adi/library/common/altera/ad_cmos_in.v

139 lines
4.2 KiB
Verilog

// ***************************************************************************
// ***************************************************************************
// 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.
// ***************************************************************************
// ***************************************************************************
`timescale 1ns/100ps
module ad_cmos_in (
// data interface
rx_clk,
rx_data_in,
rx_data_p,
rx_data_n,
// delay-data interface
up_clk,
up_dld,
up_dwdata,
up_drdata,
// delay-cntrl interface
delay_clk,
delay_rst,
delay_locked);
// parameters
parameter SINGLE_ENDED = 0;
parameter DEVICE_TYPE = 0;
parameter IODELAY_CTRL = 0;
parameter IODELAY_GROUP = "dev_if_delay_group";
// data interface
input rx_clk;
input rx_data_in;
output rx_data_p;
output rx_data_n;
// delay-data interface
input up_clk;
input up_dld;
input [ 4:0] up_dwdata;
output [ 4:0] up_drdata;
// delay-cntrl interface
input delay_clk;
input delay_rst;
output delay_locked;
// internal registers
reg rx_data_p = 'd0;
reg rx_data_n = 'd0;
// internal signals
wire rx_data_p_s;
wire rx_data_n_s;
// defaults
assign up_drdata = 5'd0;
assign delay_locked = 1'b1;
// instantiations
generate
if (DEVICE_TYPE == 0) begin
alt_ddio_in i_rx_data_iddr (
.ck (rx_clk),
.pad_in (rx_data_in),
.dout ({rx_data_p_s, rx_data_n_s}));
end
endgenerate
generate
if (DEVICE_TYPE == 1) begin
altddio_in #(.width (1), .lpm_hint("UNUSED")) i_rx_data_iddr (
.inclock (rx_clk),
.datain (rx_data_in),
.dataout_h (rx_data_p_s),
.dataout_l (rx_data_n_s),
.inclocken (1'b1),
.aclr (1'b0),
.aset (1'b0),
.sclr (1'b0),
.sset (1'b0));
end
endgenerate
always @(posedge rx_clk) begin
rx_data_p <= rx_data_p_s;
rx_data_n <= rx_data_n_s;
end
endmodule
// ***************************************************************************
// ***************************************************************************