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pluto_hdl_adi/library/axi_adrv9001/adrv9001_rx.v

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// ***************************************************************************
// ***************************************************************************
// Copyright (C) 2014-2023 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 responsibilities 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 adrv9001_rx #(
parameter CMOS_LVDS_N = 0,
parameter FPGA_TECHNOLOGY = 0,
parameter NUM_LANES = 3,
parameter DRP_WIDTH = 5,
parameter IODELAY_ENABLE = 1,
parameter IODELAY_CTRL = 0,
parameter USE_BUFG = 0,
parameter IO_DELAY_GROUP = "dev_if_delay_group"
) (
// device interface
input rx_dclk_in_n_NC,
input rx_dclk_in_p_dclk_in,
input rx_idata_in_n_idata0,
input rx_idata_in_p_idata1,
input rx_qdata_in_n_qdata2,
input rx_qdata_in_p_qdata3,
input rx_strobe_in_n_NC,
input rx_strobe_in_p_strobe_in,
// internal reset and clocks
input adc_rst,
output adc_clk,
output adc_clk_div,
output [7:0] adc_data_0,
output [7:0] adc_data_1,
output [7:0] adc_data_2,
output [7:0] adc_data_3,
output [7:0] adc_data_strobe,
output adc_valid,
output [31:0] adc_clk_ratio,
// delay interface (for IDELAY macros)
input up_clk,
input [NUM_LANES-1:0] up_adc_dld,
input [DRP_WIDTH*NUM_LANES-1:0] up_adc_dwdata,
output [DRP_WIDTH*NUM_LANES-1:0] up_adc_drdata,
input delay_clk,
input delay_rst,
output delay_locked,
input mssi_sync,
output ssi_sync_out,
input ssi_sync_in,
output ssi_rst
);
// Use always DDR mode
localparam DDR_OR_SDR_N = 1;
localparam SEVEN_SERIES = 1;
localparam ULTRASCALE = 2;
localparam ULTRASCALE_PLUS = 3;
// internal wire
wire clk_in_s;
wire [NUM_LANES-1:0] serdes_in_p;
wire [NUM_LANES-1:0] serdes_in_n;
wire [NUM_LANES-1:0] data_s0;
wire [NUM_LANES-1:0] data_s1;
wire [NUM_LANES-1:0] data_s2;
wire [NUM_LANES-1:0] data_s3;
wire [NUM_LANES-1:0] data_s4;
wire [NUM_LANES-1:0] data_s5;
wire [NUM_LANES-1:0] data_s6;
wire [NUM_LANES-1:0] data_s7;
wire adc_clk_in_fast;
// internal registers
// data interface
ad_serdes_in #(
.CMOS_LVDS_N (CMOS_LVDS_N),
.FPGA_TECHNOLOGY (FPGA_TECHNOLOGY),
.IODELAY_CTRL (IODELAY_CTRL),
.IODELAY_ENABLE (IODELAY_ENABLE),
.IODELAY_GROUP (IO_DELAY_GROUP),
.DDR_OR_SDR_N (DDR_OR_SDR_N),
.DATA_WIDTH (NUM_LANES),
.DRP_WIDTH (DRP_WIDTH),
.SERDES_FACTOR (8)
) i_serdes (
.rst (adc_rst|ssi_rst),
.clk (adc_clk_in_fast),
.div_clk (adc_clk_div),
.data_s0 (data_s0),
.data_s1 (data_s1),
.data_s2 (data_s2),
.data_s3 (data_s3),
.data_s4 (data_s4),
.data_s5 (data_s5),
.data_s6 (data_s6),
.data_s7 (data_s7),
.data_in_p (serdes_in_p),
.data_in_n (serdes_in_n),
.up_clk (up_clk),
.up_dld (up_adc_dld),
.up_dwdata (up_adc_dwdata),
.up_drdata (up_adc_drdata),
.delay_clk (delay_clk),
.delay_rst (delay_rst),
.delay_locked (delay_locked));
generate
if (CMOS_LVDS_N == 0) begin
IBUFGDS i_clk_in_ibuf (
.I (rx_dclk_in_p_dclk_in),
.IB (rx_dclk_in_n_NC),
.O (clk_in_s));
assign {adc_data_strobe[0],adc_data_1[0],adc_data_0[0]} = data_s0;
assign {adc_data_strobe[1],adc_data_1[1],adc_data_0[1]} = data_s1;
assign {adc_data_strobe[2],adc_data_1[2],adc_data_0[2]} = data_s2;
assign {adc_data_strobe[3],adc_data_1[3],adc_data_0[3]} = data_s3;
assign {adc_data_strobe[4],adc_data_1[4],adc_data_0[4]} = data_s4;
assign {adc_data_strobe[5],adc_data_1[5],adc_data_0[5]} = data_s5;
assign {adc_data_strobe[6],adc_data_1[6],adc_data_0[6]} = data_s6;
assign {adc_data_strobe[7],adc_data_1[7],adc_data_0[7]} = data_s7;
assign serdes_in_p = {rx_strobe_in_p_strobe_in,
rx_qdata_in_p_qdata3,
rx_idata_in_p_idata1};
assign serdes_in_n = {rx_strobe_in_n_NC,
rx_qdata_in_n_qdata2,
rx_idata_in_n_idata0};
end else begin
IBUF i_clk_in_ibuf (
.I (rx_dclk_in_p_dclk_in),
.O (clk_in_s));
assign {adc_data_strobe[0],adc_data_3[0],adc_data_2[0],adc_data_1[0],adc_data_0[0]} = data_s0;
assign {adc_data_strobe[1],adc_data_3[1],adc_data_2[1],adc_data_1[1],adc_data_0[1]} = data_s1;
assign {adc_data_strobe[2],adc_data_3[2],adc_data_2[2],adc_data_1[2],adc_data_0[2]} = data_s2;
assign {adc_data_strobe[3],adc_data_3[3],adc_data_2[3],adc_data_1[3],adc_data_0[3]} = data_s3;
assign {adc_data_strobe[4],adc_data_3[4],adc_data_2[4],adc_data_1[4],adc_data_0[4]} = data_s4;
assign {adc_data_strobe[5],adc_data_3[5],adc_data_2[5],adc_data_1[5],adc_data_0[5]} = data_s5;
assign {adc_data_strobe[6],adc_data_3[6],adc_data_2[6],adc_data_1[6],adc_data_0[6]} = data_s6;
assign {adc_data_strobe[7],adc_data_3[7],adc_data_2[7],adc_data_1[7],adc_data_0[7]} = data_s7;
assign serdes_in_p = {rx_strobe_in_p_strobe_in,
rx_qdata_in_p_qdata3,
rx_qdata_in_n_qdata2,
rx_idata_in_p_idata1,
rx_idata_in_n_idata0};
assign serdes_in_n = 5'b0;
end
endgenerate
generate
if (FPGA_TECHNOLOGY == SEVEN_SERIES) begin
BUFIO i_clk_buf (
.I (clk_in_s),
.O (adc_clk_in_fast));
BUFR #(
.BUFR_DIVIDE("4")
) i_div_clk_buf (
.CLR (mssi_sync),
.CE (1'b1),
.I (clk_in_s),
.O (adc_clk_div_s));
if (USE_BUFG == 1) begin
BUFG I_bufg (
.I (adc_clk_div_s),
.O (adc_clk_div));
end else begin
assign adc_clk_div = adc_clk_div_s;
end
xpm_cdc_async_rst #(
.DEST_SYNC_FF (10), // DECIMAL; range: 2-10
.INIT_SYNC_FF ( 0), // DECIMAL; 0=disable simulation init values, 1=enable simulation init values
.RST_ACTIVE_HIGH ( 1) // DECIMAL; 0=active low reset, 1=active high reset
) rst_syncro (
.src_arst (mssi_sync),
.dest_clk (adc_clk_div),
.dest_arst(ssi_rst));
end else begin
wire adc_clk_in;
reg mssi_sync_d = 1'b0;
reg mssi_sync_2d = 1'b0;
reg mssi_sync_3d = 1'b0;
reg mssi_sync_edge = 1'b0;
always @(posedge adc_clk_in) begin
mssi_sync_d <= mssi_sync;
mssi_sync_2d <= mssi_sync_d;
mssi_sync_3d <= mssi_sync_2d;
mssi_sync_edge <= mssi_sync_2d & ~mssi_sync_3d;
end
assign ssi_sync_out = mssi_sync_edge;
reg ssi_rst_pos;
always @(posedge adc_clk_in) begin
ssi_rst_pos <= ssi_sync_in;
end
assign adc_clk_in = clk_in_s;
BUFGCE #(
.CE_TYPE ("SYNC"),
.IS_CE_INVERTED (1'b0),
.IS_I_INVERTED (1'b0)
) i_clk_buf_fast (
.O (adc_clk_in_fast),
.CE (1'b1),
.I (adc_clk_in));
BUFGCE_DIV #(
.BUFGCE_DIVIDE (4),
.IS_CE_INVERTED (1'b0),
.IS_CLR_INVERTED (1'b0),
.IS_I_INVERTED (1'b0)
) i_div_clk_buf (
.O (adc_clk_div),
.CE (1'b1),
.CLR (ssi_rst),
.I (adc_clk_in));
assign ssi_rst = ssi_rst_pos;
end
endgenerate
assign adc_clk = adc_clk_in_fast;
assign adc_valid = ~adc_rst;
assign adc_clk_ratio = 4;
endmodule
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