pluto_hdl_adi/library/axi_dac_interpolate/axi_dac_interpolate.v

338 lines
11 KiB
Verilog

// ***************************************************************************
// ***************************************************************************
// 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_dac_interpolate #(
parameter CORRECTION_DISABLE = 1) (
input dac_clk,
input dac_rst,
input [15:0] dac_data_a,
input [15:0] dac_data_b,
input dac_valid_a,
input dac_valid_b,
input dma_valid_a,
input dma_valid_b,
output dma_ready_a,
output dma_ready_b,
input dac_enable_a,
input dac_enable_b,
output [15:0] dac_int_data_a,
output [15:0] dac_int_data_b,
output dac_valid_out_a,
output dac_valid_out_b,
output hold_last_sample,
output underflow,
input [ 1:0] trigger_i,
input trigger_adc,
input trigger_la,
// axi interface
input s_axi_aclk,
input s_axi_aresetn,
input s_axi_awvalid,
input [ 6:0] s_axi_awaddr,
input [ 2:0] s_axi_awprot,
output s_axi_awready,
input s_axi_wvalid,
input [31:0] s_axi_wdata,
input [ 3:0] s_axi_wstrb,
output s_axi_wready,
output s_axi_bvalid,
output [ 1:0] s_axi_bresp,
input s_axi_bready,
input s_axi_arvalid,
input [ 6:0] s_axi_araddr,
input [ 2:0] s_axi_arprot,
output s_axi_arready,
output s_axi_rvalid,
output [31:0] s_axi_rdata,
output [ 1:0] s_axi_rresp,
input s_axi_rready);
reg [ 1:0] trigger_i_m1;
reg [ 1:0] trigger_i_m2;
reg [ 1:0] trigger_i_m3;
reg trigger_adc_m1;
reg trigger_adc_m2;
reg trigger_adc_m3;
reg trigger_la_m1;
reg trigger_la_m2;
reg trigger_la_m3;
reg [ 1:0] any_edge_trigger;
reg [ 1:0] rise_edge_trigger;
reg [ 1:0] fall_edge_trigger;
reg [ 1:0] high_level_trigger;
reg [ 1:0] low_level_trigger;
// internal signals
wire up_clk;
wire up_rstn;
wire [ 4:0] up_waddr;
wire [31:0] up_wdata;
wire up_wack;
wire up_wreq;
wire up_rack;
wire [31:0] up_rdata;
wire up_rreq;
wire [ 4:0] up_raddr;
wire [31:0] interpolation_ratio_a;
wire [31:0] interpolation_ratio_b;
wire [ 2:0] filter_mask_a;
wire [ 2:0] filter_mask_b;
wire dma_transfer_suspend;
wire start_sync_channels;
wire dac_correction_enable_a;
wire dac_correction_enable_b;
wire [15:0] dac_correction_coefficient_a;
wire [15:0] dac_correction_coefficient_b;
wire [19:0] trigger_config;
wire en_start_trigger;
wire en_stop_trigger;
wire [ 1:0] en_trigger_pins;
wire en_trigger_adc;
wire en_trigger_la;
wire [ 1:0] low_level;
wire [ 1:0] high_level;
wire [ 1:0] any_edge;
wire [ 1:0] rise_edge;
wire [ 1:0] fall_edge;
wire trigger_active;
wire trigger;
wire ext_trigger;
wire underflow_a;
wire underflow_b;
wire [ 1:0] lsample_hold_config;
wire sync_stop_channels;
// signal name changes
assign up_clk = s_axi_aclk;
assign up_rstn = s_axi_aresetn;
// trigger logic
assign low_level = trigger_config[1:0];
assign high_level = trigger_config[3:2];
assign any_edge = trigger_config[5:4];
assign rise_edge = trigger_config[7:6];
assign fall_edge = trigger_config[9:8];
assign en_start_trigger = trigger_config[14];
assign en_stop_trigger = trigger_config[15];
assign en_trigger_pins = trigger_config[17:16];
assign en_trigger_adc = trigger_config[18];
assign en_trigger_la = trigger_config[19];
assign trigger_active = |trigger_config[19:16];
assign trigger = (ext_trigger & en_trigger_pins) |
(trigger_adc_m2 & en_trigger_adc) |
(trigger_la_m2 & en_trigger_la);
assign ext_trigger = |(any_edge_trigger |
rise_edge_trigger |
fall_edge_trigger |
high_level_trigger |
low_level_trigger);
// sync
always @(posedge dac_clk) begin
trigger_i_m1 <= trigger_i;
trigger_i_m2 <= trigger_i_m1;
trigger_i_m3 <= trigger_i_m2;
trigger_adc_m1 <= trigger_adc;
trigger_adc_m2 <= trigger_adc_m1;
trigger_la_m1 <= trigger_la;
trigger_la_m2 <= trigger_la_m1;
end
always @(posedge dac_clk) begin
any_edge_trigger <= (trigger_i_m3 ^ trigger_i_m2) & any_edge;
rise_edge_trigger <= (~trigger_i_m3 & trigger_i_m2) & rise_edge;
fall_edge_trigger <= (trigger_i_m3 & ~trigger_i_m2) & fall_edge;
high_level_trigger <= trigger_i_m3 & high_level;
low_level_trigger <= ~trigger_i_m3 & low_level;
end
assign hold_last_sample = lsample_hold_config[0];
assign sync_stop_channels = lsample_hold_config[1];
assign underflow = underflow_a | underflow_b;
axi_dac_interpolate_filter #(
.CORRECTION_DISABLE(CORRECTION_DISABLE))
i_filter_a (
.dac_clk (dac_clk),
.dac_rst (dac_rst),
.dac_data (dac_data_a),
.dac_valid (dac_valid_a),
.dac_valid_out (dac_valid_out_a),
.sync_stop_channels (sync_stop_channels),
.dac_enable (dac_enable_a),
.dac_int_data (dac_int_data_a),
.dma_ready (dma_ready_a),
.underflow (underflow_a),
.filter_mask (filter_mask_a),
.interpolation_ratio (interpolation_ratio_a),
.dma_transfer_suspend (dma_transfer_suspend),
.start_sync_channels (start_sync_channels),
.trigger (trigger),
.trigger_active (trigger_active),
.en_start_trigger (en_start_trigger),
.en_stop_trigger (en_stop_trigger),
.dma_valid (dma_valid_a),
.dma_valid_adjacent (dma_valid_b),
.dac_correction_enable(dac_correction_enable_a),
.dac_correction_coefficient(dac_correction_coefficient_a)
);
axi_dac_interpolate_filter #(
.CORRECTION_DISABLE(CORRECTION_DISABLE))
i_filter_b (
.dac_clk (dac_clk),
.dac_rst (dac_rst),
.dac_data (dac_data_b),
.dac_valid (dac_valid_b),
.dac_valid_out (dac_valid_out_b),
.sync_stop_channels (sync_stop_channels),
.underflow (underflow_b),
.dac_enable (dac_enable_b),
.dac_int_data (dac_int_data_b),
.dma_ready (dma_ready_b),
.filter_mask (filter_mask_b),
.interpolation_ratio (interpolation_ratio_b),
.dma_transfer_suspend (dma_transfer_suspend),
.start_sync_channels (start_sync_channels),
.trigger (trigger),
.trigger_active (trigger_active),
.en_start_trigger (en_start_trigger),
.en_stop_trigger (en_stop_trigger),
.dma_valid (dma_valid_b),
.dma_valid_adjacent (dma_valid_a),
.dac_correction_enable(dac_correction_enable_b),
.dac_correction_coefficient(dac_correction_coefficient_b)
);
axi_dac_interpolate_reg axi_dac_interpolate_reg_inst (
.clk (dac_clk),
.dac_interpolation_ratio_a (interpolation_ratio_a),
.dac_filter_mask_a (filter_mask_a),
.dac_interpolation_ratio_b (interpolation_ratio_b),
.dac_filter_mask_b (filter_mask_b),
.dma_transfer_suspend (dma_transfer_suspend),
.start_sync_channels (start_sync_channels),
.dac_correction_enable_a(dac_correction_enable_a),
.dac_correction_enable_b(dac_correction_enable_b),
.dac_correction_coefficient_a(dac_correction_coefficient_a),
.dac_correction_coefficient_b(dac_correction_coefficient_b),
.trigger_config (trigger_config),
.lsample_hold_config (lsample_hold_config),
.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));
up_axi #(
.AXI_ADDRESS_WIDTH(7)
) 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),
.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
// ***************************************************************************
// ***************************************************************************