pluto_hdl_adi/library/xilinx/common/ad_lvds_out.v

165 lines
4.7 KiB
Coq
Raw Normal View History

// ***************************************************************************
// ***************************************************************************
// 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 1ns/100ps
module ad_lvds_out #(
parameter DEVICE_TYPE = 0,
parameter SINGLE_ENDED = 0,
parameter IODELAY_ENABLE = 0,
parameter IODELAY_CTRL = 0,
parameter IODELAY_GROUP = "dev_if_delay_group") (
// data interface
input tx_clk,
input tx_data_p,
input tx_data_n,
output tx_data_out_p,
output tx_data_out_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);
2016-09-30 15:52:00 +00:00
localparam VIRTEX7 = 0;
localparam VIRTEX6 = 1;
2016-09-30 15:52:00 +00:00
localparam ULTRASCALE = 2;
// internal signals
wire tx_data_oddr_s;
wire tx_data_odelay_s;
// delay controller
generate
2016-09-30 15:52:00 +00:00
if ((IODELAY_ENABLE == 1) && (DEVICE_TYPE == VIRTEX7) && (IODELAY_CTRL == 1)) begin
(* IODELAY_GROUP = IODELAY_GROUP *)
IDELAYCTRL i_delay_ctrl (
.RST (delay_rst),
.REFCLK (delay_clk),
.RDY (delay_locked));
end else begin
assign delay_locked = 1'b1;
end
endgenerate
// transmit data interface, oddr -> odelay -> obuf
2016-09-30 15:52:00 +00:00
generate
if (DEVICE_TYPE == ULTRASCALE) begin
ODDRE1 i_tx_data_oddr (
.SR (1'b0),
.C (tx_clk),
.D1 (tx_data_p),
.D2 (tx_data_n),
.Q (tx_data_oddr_s));
end else begin
ODDR #(
.DDR_CLK_EDGE ("SAME_EDGE"),
.INIT (1'b0),
.SRTYPE ("ASYNC"))
i_tx_data_oddr (
.CE (1'b1),
.R (1'b0),
.S (1'b0),
.C (tx_clk),
.D1 (tx_data_p),
.D2 (tx_data_n),
.Q (tx_data_oddr_s));
2016-09-30 15:52:00 +00:00
end
endgenerate
generate
2016-09-30 15:52:00 +00:00
if ((IODELAY_ENABLE == 1) && (DEVICE_TYPE == VIRTEX7)) begin
(* IODELAY_GROUP = IODELAY_GROUP *)
ODELAYE2 #(
.CINVCTRL_SEL ("FALSE"),
.DELAY_SRC ("ODATAIN"),
.HIGH_PERFORMANCE_MODE ("FALSE"),
.ODELAY_TYPE ("VAR_LOAD"),
.ODELAY_VALUE (0),
.REFCLK_FREQUENCY (200.0),
.PIPE_SEL ("FALSE"),
.SIGNAL_PATTERN ("DATA"))
i_tx_data_odelay (
.CE (1'b0),
.CLKIN (1'b0),
.INC (1'b0),
.LDPIPEEN (1'b0),
.CINVCTRL (1'b0),
.REGRST (1'b0),
.C (up_clk),
.ODATAIN (tx_data_oddr_s),
.DATAOUT (tx_data_odelay_s),
.LD (up_dld),
.CNTVALUEIN (up_dwdata),
.CNTVALUEOUT (up_drdata));
end else begin
assign up_drdata = 5'd0;
assign tx_data_odelay_s = tx_data_oddr_s;
end
endgenerate
2015-08-27 15:14:03 +00:00
generate
if (SINGLE_ENDED == 1) begin
assign tx_data_out_n = 1'b0;
OBUF i_tx_data_obuf (
.I (tx_data_odelay_s),
.O (tx_data_out_p));
end else begin
OBUFDS i_tx_data_obuf (
.I (tx_data_odelay_s),
.O (tx_data_out_p),
.OB (tx_data_out_n));
2015-08-27 15:14:03 +00:00
end
endgenerate
endmodule
// ***************************************************************************
// ***************************************************************************