pluto_hdl_adi/library/axi_ad9122/axi_ad9122_channel.v

245 lines
7.8 KiB
Verilog

// ***************************************************************************
// ***************************************************************************
// Copyright 2014 - 2017 (c) Analog Devices, Inc. All rights reserved.
//
// Each core or library found in this collection may have its own licensing terms.
// The user should keep this in in mind while exploring these cores.
//
// Redistribution and use in source and binary forms,
// with or without modification of this file, are permitted under the terms of either
// (at the option of the user):
//
// 1. The GNU General Public License version 2 as published by the
// Free Software Foundation, which can be found in the top level directory, or at:
// https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html
//
// OR
//
// 2. An ADI specific BSD license as noted in the top level directory, or on-line at:
// https://github.com/analogdevicesinc/hdl/blob/dev/LICENSE
//
// ***************************************************************************
// ***************************************************************************
`timescale 1ns/100ps
module axi_ad9122_channel #(
parameter CHANNEL_ID = 32'h0,
parameter DATAPATH_DISABLE = 0) (
// dac interface
input dac_div_clk,
input dac_rst,
output reg dac_enable,
output reg [63:0] dac_data,
output reg [ 3:0] dac_frame,
input [63:0] dma_data,
// processor interface
input dac_data_frame,
input dac_data_sync,
input dac_dds_format,
// bus 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 registers
reg [15:0] dac_dds_phase_0_0 = 'd0;
reg [15:0] dac_dds_phase_0_1 = 'd0;
reg [15:0] dac_dds_phase_1_0 = 'd0;
reg [15:0] dac_dds_phase_1_1 = 'd0;
reg [15:0] dac_dds_phase_2_0 = 'd0;
reg [15:0] dac_dds_phase_2_1 = 'd0;
reg [15:0] dac_dds_phase_3_0 = 'd0;
reg [15:0] dac_dds_phase_3_1 = 'd0;
reg [15:0] dac_dds_incr_0 = 'd0;
reg [15:0] dac_dds_incr_1 = 'd0;
reg [63:0] dac_dds_data = 'd0;
// internal signals
wire [15:0] dac_dds_data_0_s;
wire [15:0] dac_dds_data_1_s;
wire [15:0] dac_dds_data_2_s;
wire [15:0] dac_dds_data_3_s;
wire [15:0] dac_dds_scale_1_s;
wire [15:0] dac_dds_init_1_s;
wire [15:0] dac_dds_incr_1_s;
wire [15:0] dac_dds_scale_2_s;
wire [15:0] dac_dds_init_2_s;
wire [15:0] dac_dds_incr_2_s;
wire [15:0] dac_pat_data_1_s;
wire [15:0] dac_pat_data_2_s;
wire [ 3:0] dac_data_sel_s;
// dac data select
always @(posedge dac_div_clk) begin
dac_enable <= (dac_data_sel_s == 4'h2) ? 1'b1 : 1'b0;
case (dac_data_sel_s)
4'h2: dac_data <= dma_data;
4'ha, 4'h1: dac_data <= {dac_pat_data_2_s, dac_pat_data_1_s,
dac_pat_data_2_s, dac_pat_data_1_s};
default: dac_data <= dac_dds_data;
endcase
if (dac_data_sel_s == 4'h1) begin
dac_frame <= 4'b0101;
end else begin
dac_frame <= {3'd0, dac_data_frame};
end
end
// single channel dds
always @(posedge dac_div_clk) begin
if (dac_data_sync == 1'b1) begin
dac_dds_phase_0_0 <= dac_dds_init_1_s;
dac_dds_phase_0_1 <= dac_dds_init_2_s;
dac_dds_phase_1_0 <= dac_dds_phase_0_0 + dac_dds_incr_1_s;
dac_dds_phase_1_1 <= dac_dds_phase_0_1 + dac_dds_incr_2_s;
dac_dds_phase_2_0 <= dac_dds_phase_1_0 + dac_dds_incr_1_s;
dac_dds_phase_2_1 <= dac_dds_phase_1_1 + dac_dds_incr_2_s;
dac_dds_phase_3_0 <= dac_dds_phase_2_0 + dac_dds_incr_1_s;
dac_dds_phase_3_1 <= dac_dds_phase_2_1 + dac_dds_incr_2_s;
dac_dds_incr_0 <= {dac_dds_incr_1_s[13:0], 2'd0};
dac_dds_incr_1 <= {dac_dds_incr_2_s[13:0], 2'd0};
dac_dds_data <= 64'd0;
end else begin
dac_dds_phase_0_0 <= dac_dds_phase_0_0 + dac_dds_incr_0;
dac_dds_phase_0_1 <= dac_dds_phase_0_1 + dac_dds_incr_1;
dac_dds_phase_1_0 <= dac_dds_phase_1_0 + dac_dds_incr_0;
dac_dds_phase_1_1 <= dac_dds_phase_1_1 + dac_dds_incr_1;
dac_dds_phase_2_0 <= dac_dds_phase_2_0 + dac_dds_incr_0;
dac_dds_phase_2_1 <= dac_dds_phase_2_1 + dac_dds_incr_1;
dac_dds_phase_3_0 <= dac_dds_phase_3_0 + dac_dds_incr_0;
dac_dds_phase_3_1 <= dac_dds_phase_3_1 + dac_dds_incr_1;
dac_dds_incr_0 <= dac_dds_incr_0;
dac_dds_incr_1 <= dac_dds_incr_1;
dac_dds_data <= { dac_dds_data_3_s, dac_dds_data_2_s,
dac_dds_data_1_s, dac_dds_data_0_s};
end
end
generate
if (DATAPATH_DISABLE == 1) begin
assign dac_dds_data_0_s = 16'd0;
end else begin
ad_dds i_dds_0 (
.clk (dac_div_clk),
.dds_format (dac_dds_format),
.dds_phase_0 (dac_dds_phase_0_0),
.dds_scale_0 (dac_dds_scale_1_s),
.dds_phase_1 (dac_dds_phase_0_1),
.dds_scale_1 (dac_dds_scale_2_s),
.dds_data (dac_dds_data_0_s));
end
endgenerate
generate
if (DATAPATH_DISABLE == 1) begin
assign dac_dds_data_1_s = 16'd0;
end else begin
ad_dds i_dds_1 (
.clk (dac_div_clk),
.dds_format (dac_dds_format),
.dds_phase_0 (dac_dds_phase_1_0),
.dds_scale_0 (dac_dds_scale_1_s),
.dds_phase_1 (dac_dds_phase_1_1),
.dds_scale_1 (dac_dds_scale_2_s),
.dds_data (dac_dds_data_1_s));
end
endgenerate
generate
if (DATAPATH_DISABLE == 1) begin
assign dac_dds_data_2_s = 16'd0;
end else begin
ad_dds i_dds_2 (
.clk (dac_div_clk),
.dds_format (dac_dds_format),
.dds_phase_0 (dac_dds_phase_2_0),
.dds_scale_0 (dac_dds_scale_1_s),
.dds_phase_1 (dac_dds_phase_2_1),
.dds_scale_1 (dac_dds_scale_2_s),
.dds_data (dac_dds_data_2_s));
end
endgenerate
generate
if (DATAPATH_DISABLE == 1) begin
assign dac_dds_data_3_s = 16'd0;
end else begin
ad_dds i_dds_3 (
.clk (dac_div_clk),
.dds_format (dac_dds_format),
.dds_phase_0 (dac_dds_phase_3_0),
.dds_scale_0 (dac_dds_scale_1_s),
.dds_phase_1 (dac_dds_phase_3_1),
.dds_scale_1 (dac_dds_scale_2_s),
.dds_data (dac_dds_data_3_s));
end
endgenerate
// single channel processor
up_dac_channel #(.CHANNEL_ID(CHANNEL_ID)) i_up_dac_channel (
.dac_clk (dac_div_clk),
.dac_rst (dac_rst),
.dac_dds_scale_1 (dac_dds_scale_1_s),
.dac_dds_init_1 (dac_dds_init_1_s),
.dac_dds_incr_1 (dac_dds_incr_1_s),
.dac_dds_scale_2 (dac_dds_scale_2_s),
.dac_dds_init_2 (dac_dds_init_2_s),
.dac_dds_incr_2 (dac_dds_incr_2_s),
.dac_pat_data_1 (dac_pat_data_1_s),
.dac_pat_data_2 (dac_pat_data_2_s),
.dac_data_sel (dac_data_sel_s),
.dac_iq_mode (),
.dac_iqcor_enb (),
.dac_iqcor_coeff_1 (),
.dac_iqcor_coeff_2 (),
.up_usr_datatype_be (),
.up_usr_datatype_signed (),
.up_usr_datatype_shift (),
.up_usr_datatype_total_bits (),
.up_usr_datatype_bits (),
.up_usr_interpolation_m (),
.up_usr_interpolation_n (),
.dac_usr_datatype_be (1'b0),
.dac_usr_datatype_signed (1'b1),
.dac_usr_datatype_shift (8'd0),
.dac_usr_datatype_total_bits (8'd16),
.dac_usr_datatype_bits (8'd16),
.dac_usr_interpolation_m (16'd1),
.dac_usr_interpolation_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
// ***************************************************************************
// ***************************************************************************