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axi_ad6676: Use the generic JESD204 ADC receiver core 

Replace the axi_ad6676 implementation with the new generic JESD204
interface ADC core. The replacement is functionally equivalent, except that
the converter clock ratio is now correctly reported as 2 rather than 1 as
before.

Also the adc_rst output port is removed. It is not used in any design. The
current guidelines for the reset for the JESD204 subsystem is to use an
external reset generator.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
main
Lars-Peter Clausen 2017-05-05 19:31:10 +02:00 committed by Lars-Peter Clausen
parent bffe7e3fc0
commit 8a487816b9
6 changed files with 45 additions and 679 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
library/axi_ad6676/Makefile
View File

@ -5,24 +5,10 @@
LIBRARY_NAME := axi_ad6676
GENERIC_DEPS += ../common/ad_pnmon.v
GENERIC_DEPS += ../common/ad_rst.v
GENERIC_DEPS += ../common/ad_xcvr_rx_if.v
GENERIC_DEPS += ../common/up_adc_channel.v
GENERIC_DEPS += ../common/up_adc_common.v
GENERIC_DEPS += ../common/up_axi.v
GENERIC_DEPS += ../common/up_clock_mon.v
GENERIC_DEPS += ../common/up_xfer_cntrl.v
GENERIC_DEPS += ../common/up_xfer_status.v
GENERIC_DEPS += axi_ad6676.v
GENERIC_DEPS += axi_ad6676_channel.v
GENERIC_DEPS += axi_ad6676_if.v
GENERIC_DEPS += axi_ad6676_pnmon.v
XILINX_DEPS += ../xilinx/common/ad_rst_constr.xdc
XILINX_DEPS += ../xilinx/common/up_clock_mon_constr.xdc
XILINX_DEPS += ../xilinx/common/up_xfer_cntrl_constr.xdc
XILINX_DEPS += ../xilinx/common/up_xfer_status_constr.xdc
XILINX_DEPS += axi_ad6676_ip.tcl
XILINX_LIB_DEPS += jesd204/ad_ip_jesd204_tpl_adc
include ../scripts/library.mk

248
library/axi_ad6676/axi_ad6676.v
View File

@ -51,7 +51,6 @@ module axi_ad6676 #(
// dma interface
output adc_clk,
output adc_rst,
output adc_valid_0,
output adc_enable_0,
output [31:0] adc_data_0,
@ -84,218 +83,49 @@ module axi_ad6676 #(
input [ 2:0] s_axi_awprot,
input [ 2:0] s_axi_arprot);
assign adc_clk = rx_clk;
// internal registers
ad_ip_jesd204_tpl_adc #(
.ID (ID),
.NUM_LANES (2),
.NUM_CHANNELS (2),
.CHANNEL_WIDTH (16),
.TWOS_COMPLEMENT (0)
) i_adc_jesd204 (
.link_clk (rx_clk),
reg up_status_pn_err = 'd0;
reg up_status_pn_oos = 'd0;
reg up_status_or = 'd0;
reg [31:0] up_rdata = 'd0;
reg up_rack = 'd0;
reg up_wack = 'd0;
.link_sof (rx_sof),
.link_valid (rx_valid),
.link_data (rx_data),
.link_ready (rx_ready),
// internal clocks & resets
.enable ({adc_enable_1,adc_enable_0}),
wire up_rstn;
wire up_clk;
.adc_valid ({adc_valid_1,adc_valid_0}),
.adc_data ({adc_data_1,adc_data_0}),
.adc_dovf (adc_dovf),
// internal signals
wire [31:0] adc_data_0_s;
wire [31:0] adc_data_1_s;
wire adc_or_a_s;
wire adc_or_b_s;
wire adc_status_s;
wire [ 1:0] up_status_pn_err_s;
wire [ 1:0] up_status_pn_oos_s;
wire [ 1:0] up_status_or_s;
wire [31:0] up_rdata_s[0:2];
wire up_rack_s[0:2];
wire up_wack_s[0:2];
wire up_wreq_s;
wire [13:0] up_waddr_s;
wire [31:0] up_wdata_s;
wire up_rreq_s;
wire [13:0] up_raddr_s;
// signal name changes
assign up_clk = s_axi_aclk;
assign up_rstn = s_axi_aresetn;
assign rx_ready = 1'b1;
// processor read interface
always @(negedge up_rstn or posedge up_clk) begin
if (up_rstn == 0) begin
up_status_pn_err <= 'd0;
up_status_pn_oos <= 'd0;
up_status_or <= 'd0;
up_rdata <= 'd0;
up_rack <= 'd0;
up_wack <= 'd0;
end else begin
up_status_pn_err <= | up_status_pn_err_s;
up_status_pn_oos <= | up_status_pn_oos_s;
up_status_or <= | up_status_or_s;
up_rdata <= up_rdata_s[0] | up_rdata_s[1] | up_rdata_s[2];
up_rack <= up_rack_s[0] | up_rack_s[1] | up_rack_s[2];
up_wack <= up_wack_s[0] | up_wack_s[1] | up_wack_s[2];
end
end
// adc valid
assign adc_valid_0 = 1'b1;
assign adc_valid_1 = 1'b1;
// main (device interface)
axi_ad6676_if i_if (
.rx_clk (rx_clk),
.rx_sof (rx_sof),
.rx_data (rx_data),
.adc_clk (adc_clk),
.adc_rst (adc_rst),
.adc_data_a (adc_data_0_s),
.adc_data_b (adc_data_1_s),
.adc_or_a (adc_or_a_s),
.adc_or_b (adc_or_b_s),
.adc_status (adc_status_s));
// channel
axi_ad6676_channel #(.CHANNEL_ID(0)) i_channel_0 (
.adc_clk (adc_clk),
.adc_rst (adc_rst),
.adc_data (adc_data_0_s),
.adc_or (adc_or_a_s),
.adc_dfmt_data (adc_data_0),
.adc_enable (adc_enable_0),
.up_adc_pn_err (up_status_pn_err_s[0]),
.up_adc_pn_oos (up_status_pn_oos_s[0]),
.up_adc_or (up_status_or_s[0]),
.up_rstn (up_rstn),
.up_clk (up_clk),
.up_wreq (up_wreq_s),
.up_waddr (up_waddr_s),
.up_wdata (up_wdata_s),
.up_wack (up_wack_s[0]),
.up_rreq (up_rreq_s),
.up_raddr (up_raddr_s),
.up_rdata (up_rdata_s[0]),
.up_rack (up_rack_s[0]));
// channel
axi_ad6676_channel #(.CHANNEL_ID(1)) i_channel_1 (
.adc_clk (adc_clk),
.adc_rst (adc_rst),
.adc_data (adc_data_1_s),
.adc_or (adc_or_b_s),
.adc_dfmt_data (adc_data_1),
.adc_enable (adc_enable_1),
.up_adc_pn_err (up_status_pn_err_s[1]),
.up_adc_pn_oos (up_status_pn_oos_s[1]),
.up_adc_or (up_status_or_s[1]),
.up_rstn (up_rstn),
.up_clk (up_clk),
.up_wreq (up_wreq_s),
.up_waddr (up_waddr_s),
.up_wdata (up_wdata_s),
.up_wack (up_wack_s[1]),
.up_rreq (up_rreq_s),
.up_raddr (up_raddr_s),
.up_rdata (up_rdata_s[1]),
.up_rack (up_rack_s[1]));
// common processor control
up_adc_common #(
.ID(ID),
.CONFIG(0),
.COMMON_ID(6'h00),
.DRP_DISABLE(1),
.USERPORTS_DISABLE(1),
.GPIO_DISABLE(1),
.START_CODE_DISABLE(1))
i_up_adc_common (
.mmcm_rst (),
.adc_clk (adc_clk),
.adc_rst (adc_rst),
.adc_r1_mode (),
.adc_ddr_edgesel (),
.adc_pin_mode (),
.adc_status (adc_status_s),
.adc_sync_status (1'd0),
.adc_status_ovf (adc_dovf),
.adc_clk_ratio (32'd1),
.adc_start_code (),
.adc_sref_sync (),
.adc_sync (),
.up_pps_rcounter(32'h0),
.up_pps_status(1'b0),
.up_pps_irq_mask(),
.up_adc_ce (),
.up_status_pn_err (up_status_pn_err),
.up_status_pn_oos (up_status_pn_oos),
.up_status_or (up_status_or),
.up_drp_sel (),
.up_drp_wr (),
.up_drp_addr (),
.up_drp_wdata (),
.up_drp_rdata (32'd0),
.up_drp_ready (1'd0),
.up_drp_locked (1'd1),
.up_usr_chanmax_out (),
.up_usr_chanmax_in (8'd1),
.up_adc_gpio_in (32'd0),
.up_adc_gpio_out (),
.up_rstn (up_rstn),
.up_clk (up_clk),
.up_wreq (up_wreq_s),
.up_waddr (up_waddr_s),
.up_wdata (up_wdata_s),
.up_wack (up_wack_s[2]),
.up_rreq (up_rreq_s),
.up_raddr (up_raddr_s),
.up_rdata (up_rdata_s[2]),
.up_rack (up_rack_s[2]));
// up bus interface
up_axi i_up_axi (
.up_rstn (up_rstn),
.up_clk (up_clk),
.up_axi_awvalid (s_axi_awvalid),
.up_axi_awaddr (s_axi_awaddr),
.up_axi_awready (s_axi_awready),
.up_axi_wvalid (s_axi_wvalid),
.up_axi_wdata (s_axi_wdata),
.up_axi_wstrb (s_axi_wstrb),
.up_axi_wready (s_axi_wready),
.up_axi_bvalid (s_axi_bvalid),
.up_axi_bresp (s_axi_bresp),
.up_axi_bready (s_axi_bready),
.up_axi_arvalid (s_axi_arvalid),
.up_axi_araddr (s_axi_araddr),
.up_axi_arready (s_axi_arready),
.up_axi_rvalid (s_axi_rvalid),
.up_axi_rresp (s_axi_rresp),
.up_axi_rdata (s_axi_rdata),
.up_axi_rready (s_axi_rready),
.up_wreq (up_wreq_s),
.up_waddr (up_waddr_s),
.up_wdata (up_wdata_s),
.up_wack (up_wack),
.up_rreq (up_rreq_s),
.up_raddr (up_raddr_s),
.up_rdata (up_rdata),
.up_rack (up_rack));
.s_axi_aclk (s_axi_aclk),
.s_axi_aresetn (s_axi_aresetn),
.s_axi_awvalid (s_axi_awvalid),
.s_axi_awready (s_axi_awready),
.s_axi_awaddr (s_axi_awaddr),
.s_axi_awprot (s_axi_awprot),
.s_axi_wvalid (s_axi_wvalid),
.s_axi_wready (s_axi_wready),
.s_axi_wdata (s_axi_wdata),
.s_axi_wstrb (s_axi_wstrb),
.s_axi_bvalid (s_axi_bvalid),
.s_axi_bresp (s_axi_bresp),
.s_axi_bready (s_axi_bready),
.s_axi_arvalid (s_axi_arvalid),
.s_axi_arready (s_axi_arready),
.s_axi_araddr (s_axi_araddr),
.s_axi_arprot (s_axi_arprot),
.s_axi_rvalid (s_axi_rvalid),
.s_axi_rready(s_axi_rready),
.s_axi_rresp (s_axi_rresp),
.s_axi_rdata (s_axi_rdata)
);
endmodule
// ***************************************************************************
// ***************************************************************************

146
library/axi_ad6676/axi_ad6676_channel.v
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@ -1,146 +0,0 @@
// ***************************************************************************
// ***************************************************************************
// 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 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.
//
// ***************************************************************************
// ***************************************************************************
// ADC channel-
`timescale 1ns/100ps
module axi_ad6676_channel #(
parameter CHANNEL_ID = 0) (
// adc interface
input adc_clk,
input adc_rst,
input [31:0] adc_data,
input adc_or,
// channel interface
output [31:0] adc_dfmt_data,
output adc_enable,
output up_adc_pn_err,
output up_adc_pn_oos,
output up_adc_or,
// processor interface
input up_rstn,
input up_clk,
input up_wreq,
input [13:0] up_waddr,
input [31:0] up_wdata,
output up_wack,
input up_rreq,
input [13:0] up_raddr,
output [31:0] up_rdata,
output up_rack);
// internal signals
wire adc_pn_oos_s;
wire adc_pn_err_s;
wire [ 3:0] adc_pnseq_sel_s;
// instantiations
axi_ad6676_pnmon i_pnmon (
.adc_clk (adc_clk),
.adc_data (adc_data),
.adc_pn_oos (adc_pn_oos_s),
.adc_pn_err (adc_pn_err_s),
.adc_pnseq_sel (adc_pnseq_sel_s));
assign adc_dfmt_data = adc_data;
up_adc_channel #(
.CHANNEL_ID(CHANNEL_ID),
.COMMON_ID(6'h01),
.USERPORTS_DISABLE(1),
.DATAFORMAT_DISABLE(1),
.DCFILTER_DISABLE(1),
.IQCORRECTION_DISABLE(1))
i_up_adc_channel (
.adc_clk (adc_clk),
.adc_rst (adc_rst),
.adc_enable (adc_enable),
.adc_iqcor_enb (),
.adc_dcfilt_enb (),
.adc_dfmt_se (),
.adc_dfmt_type (),
.adc_dfmt_enable (),
.adc_dcfilt_offset (),
.adc_dcfilt_coeff (),
.adc_iqcor_coeff_1 (),
.adc_iqcor_coeff_2 (),
.adc_pnseq_sel (adc_pnseq_sel_s),
.adc_data_sel (),
.adc_pn_err (adc_pn_err_s),
.adc_pn_oos (adc_pn_oos_s),
.adc_or (adc_or),
.up_adc_pn_err (up_adc_pn_err),
.up_adc_pn_oos (up_adc_pn_oos),
.up_adc_or (up_adc_or),
.up_usr_datatype_be (),
.up_usr_datatype_signed (),
.up_usr_datatype_shift (),
.up_usr_datatype_total_bits (),
.up_usr_datatype_bits (),
.up_usr_decimation_m (),
.up_usr_decimation_n (),
.adc_usr_datatype_be (1'b0),
.adc_usr_datatype_signed (1'b1),
.adc_usr_datatype_shift (8'd0),
.adc_usr_datatype_total_bits (8'd16),
.adc_usr_datatype_bits (8'd16),
.adc_usr_decimation_m (16'd1),
.adc_usr_decimation_n (16'd1),
.up_rstn (up_rstn),
.up_clk (up_clk),
.up_wreq (up_wreq),
.up_waddr (up_waddr),
.up_wdata (up_wdata),
.up_wack (up_wack),
.up_rreq (up_rreq),
.up_raddr (up_raddr),
.up_rdata (up_rdata),
.up_rack (up_rack));
endmodule
// ***************************************************************************
// ***************************************************************************

115
library/axi_ad6676/axi_ad6676_if.v
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@ -1,115 +0,0 @@
// ***************************************************************************
// ***************************************************************************
// 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 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 axi_ad6676_if (
// jesd interface
// rx_clk is (line-rate/40)
input rx_clk,
input [ 3:0] rx_sof,
input [63:0] rx_data,
// adc data output
output adc_clk,
input adc_rst,
output [31:0] adc_data_a,
output [31:0] adc_data_b,
output adc_or_a,
output adc_or_b,
output reg adc_status);
// internal registers
// internal signals
wire [15:0] adc_data_a_s1_s;
wire [15:0] adc_data_a_s0_s;
wire [15:0] adc_data_b_s1_s;
wire [15:0] adc_data_b_s0_s;
wire [63:0] rx_data_s;
// adc clock is the reference clock
assign adc_clk = rx_clk;
assign adc_or_a = 1'b0;
assign adc_or_b = 1'b0;
// adc channels
assign adc_data_a = {adc_data_a_s1_s, adc_data_a_s0_s};
assign adc_data_b = {adc_data_b_s1_s, adc_data_b_s0_s};
// data multiplex
assign adc_data_a_s1_s = {rx_data[23:16], rx_data[31:24]};
assign adc_data_a_s0_s = {rx_data[ 7: 0], rx_data[15: 8]};
assign adc_data_b_s1_s = {rx_data[55:48], rx_data[63:56]};
assign adc_data_b_s0_s = {rx_data[39:32], rx_data[47:40]};
// status
always @(posedge rx_clk) begin
if (adc_rst == 1'b1) begin
adc_status <= 1'b0;
end else begin
adc_status <= 1'b1;
end
end
// frame-alignment
genvar n;
generate
for (n = 0; n < 2; n = n + 1) begin: g_xcvr_if
ad_xcvr_rx_if i_xcvr_if (
.rx_clk (rx_clk),
.rx_ip_sof (rx_sof),
.rx_ip_data (rx_data[((n*32)+31):(n*32)]),
.rx_sof (),
.rx_data (rx_data_s[((n*32)+31):(n*32)]));
end
endgenerate
endmodule
// ***************************************************************************
// ***************************************************************************

22
library/axi_ad6676/axi_ad6676_ip.tcl
View File

@ -5,32 +5,18 @@ source $ad_hdl_dir/library/scripts/adi_ip.tcl
adi_ip_create axi_ad6676
adi_ip_files axi_ad6676 [list \
"$ad_hdl_dir/library/common/ad_rst.v" \
"$ad_hdl_dir/library/common/ad_pnmon.v" \
"$ad_hdl_dir/library/common/up_axi.v" \
"$ad_hdl_dir/library/common/up_xfer_cntrl.v" \
"$ad_hdl_dir/library/common/up_xfer_status.v" \
"$ad_hdl_dir/library/common/up_clock_mon.v" \
"$ad_hdl_dir/library/common/up_adc_common.v" \
"$ad_hdl_dir/library/common/up_adc_channel.v" \
"$ad_hdl_dir/library/common/ad_xcvr_rx_if.v" \
"$ad_hdl_dir/library/xilinx/common/up_xfer_cntrl_constr.xdc" \
"$ad_hdl_dir/library/xilinx/common/ad_rst_constr.xdc" \
"$ad_hdl_dir/library/xilinx/common/up_xfer_status_constr.xdc" \
"$ad_hdl_dir/library/xilinx/common/up_clock_mon_constr.xdc" \
"axi_ad6676_pnmon.v" \
"axi_ad6676_channel.v" \
"axi_ad6676_if.v" \
"axi_ad6676.v" ]
adi_ip_properties axi_ad6676
adi_ip_add_core_dependencies { \
analog.com:user:ad_ip_jesd204_tpl_adc:1.0 \
}
set_property driver_value 0 [ipx::get_ports *rx_valid* -of_objects [ipx::current_core]]
set_property driver_value 0 [ipx::get_ports *dovf* -of_objects [ipx::current_core]]
ipx::infer_bus_interface rx_clk xilinx.com:signal:clock_rtl:1.0 [ipx::current_core]
ipx::infer_bus_interface adc_clk xilinx.com:signal:clock_rtl:1.0 [ipx::current_core]
ipx::infer_bus_interface adc_rst xilinx.com:signal:reset_rtl:1.0 [ipx::current_core]
ipx::save_core [ipx::current_core]

175
library/axi_ad6676/axi_ad6676_pnmon.v
View File

@ -1,175 +0,0 @@
// ***************************************************************************
// ***************************************************************************
// 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 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.
//
// ***************************************************************************
// ***************************************************************************
// PN monitors
`timescale 1ns/100ps
module axi_ad6676_pnmon (
// adc interface
input adc_clk,
input [31:0] adc_data,
// pn out of sync and error
output adc_pn_oos,
output adc_pn_err,
// processor interface
input [ 3:0] adc_pnseq_sel);
// internal registers
reg [31:0] adc_pn_data_in = 'd0;
reg [31:0] adc_pn_data_pn = 'd0;
// internal signals
wire [31:0] adc_pn_data_pn_s;
// PN23 function
function [31:0] pn23;
input [31:0] din;
reg [31:0] dout;
begin
dout[31] = din[22] ^ din[17];
dout[30] = din[21] ^ din[16];
dout[29] = din[20] ^ din[15];
dout[28] = din[19] ^ din[14];
dout[27] = din[18] ^ din[13];
dout[26] = din[17] ^ din[12];
dout[25] = din[16] ^ din[11];
dout[24] = din[15] ^ din[10];
dout[23] = din[14] ^ din[ 9];
dout[22] = din[13] ^ din[ 8];
dout[21] = din[12] ^ din[ 7];
dout[20] = din[11] ^ din[ 6];
dout[19] = din[10] ^ din[ 5];
dout[18] = din[ 9] ^ din[ 4];
dout[17] = din[ 8] ^ din[ 3];
dout[16] = din[ 7] ^ din[ 2];
dout[15] = din[ 6] ^ din[ 1];
dout[14] = din[ 5] ^ din[ 0];
dout[13] = din[ 4] ^ din[22] ^ din[17];
dout[12] = din[ 3] ^ din[21] ^ din[16];
dout[11] = din[ 2] ^ din[20] ^ din[15];
dout[10] = din[ 1] ^ din[19] ^ din[14];
dout[ 9] = din[ 0] ^ din[18] ^ din[13];
dout[ 8] = din[22] ^ din[12];
dout[ 7] = din[21] ^ din[11];
dout[ 6] = din[20] ^ din[10];
dout[ 5] = din[19] ^ din[ 9];
dout[ 4] = din[18] ^ din[ 8];
dout[ 3] = din[17] ^ din[ 7];
dout[ 2] = din[16] ^ din[ 6];
dout[ 1] = din[15] ^ din[ 5];
dout[ 0] = din[14] ^ din[ 4];
pn23 = dout;
end
endfunction
// PN9 function
function [31:0] pn9;
input [31:0] din;
reg [31:0] dout;
begin
dout[31] = din[ 8] ^ din[ 4];
dout[30] = din[ 7] ^ din[ 3];
dout[29] = din[ 6] ^ din[ 2];
dout[28] = din[ 5] ^ din[ 1];
dout[27] = din[ 4] ^ din[ 0];
dout[26] = din[ 3] ^ din[ 8] ^ din[ 4];
dout[25] = din[ 2] ^ din[ 7] ^ din[ 3];
dout[24] = din[ 1] ^ din[ 6] ^ din[ 2];
dout[23] = din[ 0] ^ din[ 5] ^ din[ 1];
dout[22] = din[ 8] ^ din[ 0];
dout[21] = din[ 7] ^ din[ 8] ^ din[ 4];
dout[20] = din[ 6] ^ din[ 7] ^ din[ 3];
dout[19] = din[ 5] ^ din[ 6] ^ din[ 2];
dout[18] = din[ 4] ^ din[ 5] ^ din[ 1];
dout[17] = din[ 3] ^ din[ 4] ^ din[ 0];
dout[16] = din[ 2] ^ din[ 3] ^ din[ 8] ^ din[ 4];
dout[15] = din[ 1] ^ din[ 2] ^ din[ 7] ^ din[ 3];
dout[14] = din[ 0] ^ din[ 1] ^ din[ 6] ^ din[ 2];
dout[13] = din[ 8] ^ din[ 0] ^ din[ 4] ^ din[ 5] ^ din[ 1];
dout[12] = din[ 7] ^ din[ 8] ^ din[ 3] ^ din[ 0];
dout[11] = din[ 6] ^ din[ 7] ^ din[ 2] ^ din[ 8] ^ din[ 4];
dout[10] = din[ 5] ^ din[ 6] ^ din[ 1] ^ din[ 7] ^ din[ 3];
dout[ 9] = din[ 4] ^ din[ 5] ^ din[ 0] ^ din[ 6] ^ din[ 2];
dout[ 8] = din[ 3] ^ din[ 8] ^ din[ 5] ^ din[ 1];
dout[ 7] = din[ 2] ^ din[ 4] ^ din[ 7] ^ din[ 0];
dout[ 6] = din[ 1] ^ din[ 3] ^ din[ 6] ^ din[ 8] ^ din[ 4];
dout[ 5] = din[ 0] ^ din[ 2] ^ din[ 5] ^ din[ 7] ^ din[ 3];
dout[ 4] = din[ 8] ^ din[ 1] ^ din[ 6] ^ din[ 2];
dout[ 3] = din[ 7] ^ din[ 0] ^ din[ 5] ^ din[ 1];
dout[ 2] = din[ 6] ^ din[ 8] ^ din[ 0];
dout[ 1] = din[ 5] ^ din[ 7] ^ din[ 8] ^ din[ 4];
dout[ 0] = din[ 4] ^ din[ 6] ^ din[ 7] ^ din[ 3];
pn9 = dout;
end
endfunction
// pn sequence select
assign adc_pn_data_pn_s = (adc_pn_oos == 1'b1) ? adc_pn_data_in : adc_pn_data_pn;
always @(posedge adc_clk) begin
adc_pn_data_in <= {adc_data[15:0], adc_data[31:16]};
if (adc_pnseq_sel == 4'd0) begin
adc_pn_data_pn <= pn9(adc_pn_data_pn_s);
end else begin
adc_pn_data_pn <= pn23(adc_pn_data_pn_s);
end
end
// pn oos & pn err
ad_pnmon #(.DATA_WIDTH(32)) i_pnmon (
.adc_clk (adc_clk),
.adc_valid_in (1'b1),
.adc_data_in (adc_pn_data_in),
.adc_data_pn (adc_pn_data_pn),
.adc_pn_oos (adc_pn_oos),
.adc_pn_err (adc_pn_err));
endmodule
// ***************************************************************************
// ***************************************************************************