pluto_hdl_adi/library/util_adcfifo/util_adcfifo.v

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// ***************************************************************************
// ***************************************************************************
// 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
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// 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 util_adcfifo #(
parameter FPGA_TECHNOLOGY = 0,
parameter ADC_DATA_WIDTH = 256,
parameter DMA_DATA_WIDTH = 64,
parameter DMA_READY_ENABLE = 1,
parameter DMA_ADDRESS_WIDTH = 10
) (
// fifo interface
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input adc_rst,
input adc_clk,
input adc_wr,
input [ADC_DATA_WIDTH-1:0] adc_wdata,
output adc_wovf,
// dma interface
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input dma_clk,
output dma_wr,
output [DMA_DATA_WIDTH-1:0] dma_wdata,
input dma_wready,
input dma_xfer_req,
output [ 3:0] dma_xfer_status
);
localparam DMA_MEM_RATIO = ADC_DATA_WIDTH/DMA_DATA_WIDTH;
localparam ADDRESS_PADDING_WIDTH = (DMA_MEM_RATIO == 1) ? 0 :
(DMA_MEM_RATIO == 2) ? 1 :
(DMA_MEM_RATIO == 4) ? 2 : 3;
localparam ADC_ADDRESS_WIDTH = DMA_ADDRESS_WIDTH - ADDRESS_PADDING_WIDTH;
hdl/library: Update the IP parameters The following IP parameters were renamed: PCORE_ID --> ID PCORE_DEVTYPE --> DEVICE_TYPE PCORE_IODELAY_GROUP --> IO_DELAY_GROUP CH_DW --> CHANNEL_DATA_WIDTH CH_CNT --> NUM_OF_CHANNELS PCORE_BUFTYPE --> DEVICE_TYPE PCORE_ADC_DP_DISABLE --> ADC_DATAPATH_DISABLE CHID --> CHANNEL_ID PCORE_DEVICE_TYPE --> DEVICE_TYPE PCORE_MMCM_BUFIO_N --> MMCM_BUFIO_N PCORE_SERDES_DDR_N --> SERDES_DDR_N PCORE_DAC_DP_DISABLE --> DAC_DATAPATH_DISABLE DP_DISABLE --> DATAPATH_DISABLE PCORE_DAC_IODELAY_ENABLE --> DAC_IODELAY_ENABLE C_BIG_ENDIAN --> BIG_ENDIAN C_M_DATA_WIDTH --> MASTER_DATA_WIDTH C_S_DATA_WIDTH --> SLAVE_DATA_WIDTH NUM_CHANNELS --> NUM_OF_CHANNELS CHANNELS --> NUM_OF_CHANNELS PCORE_4L_2L_N -->QUAD_OR_DUAL_N C_ADDRESS_WIDTH --> ADDRESS_WIDTH C_DATA_WIDTH --> DATA_WIDTH C_CLKS_ASYNC --> CLKS_ASYNC PCORE_QUAD_DUAL_N --> QUAD_DUAL_N NUM_CS --> NUM_OF_CS PCORE_DAC_CHANNEL_ID --> DAC_CHANNEL_ID PCORE_ADC_CHANNEL_ID --> ADC_CHANNEL_ID PCORE_CLK0_DIV --> CLK0_DIV PCORE_CLK1_DIV --> CLK1_DIV PCORE_CLKIN_PERIOD --> CLKIN_PERIOD PCORE_VCO_DIV --> VCO_DIV PCORE_Cr_Cb_N --> CR_CB_N PCORE_VCO_MUL --> VCO_MUL PCORE_EMBEDDED_SYNC --> EMBEDDED_SYNC PCORE_AXI_ID_WIDTH --> AXI_ID_WIDTH PCORE_ADDR_WIDTH --> ADDRESS_WIDTH DADATA_WIDTH --> DATA_WIDTH NUM_OF_NUM_OF_CHANNEL --> NUM_OF_CHANNELS DEBOUNCER_LEN --> DEBOUNCER_LENGTH ADDR_WIDTH --> ADDRESS_WIDTH C_S_AXIS_REGISTERED --> S_AXIS_REGISTERED Cr_Cb_N --> CR_CB_N ADDATA_WIDTH --> ADC_DATA_WIDTH BUFTYPE --> DEVICE_TYPE NUM_BITS --> NUM_OF_BITS WIDTH_A --> A_DATA_WIDTH WIDTH_B --> B_DATA_WIDTH CH_OCNT --> NUM_OF_CHANNELS_O M_CNT --> NUM_OF_CHANNELS_M P_CNT --> NUM_OF_CHANNELS_P CH_ICNT --> NUM_OF_CHANNELS_I CH_MCNT --> NUM_OF_CHANNELS_M 4L_2L_N --> QUAD_OR_DUAL_N SPI_CLK_ASYNC --> ASYNC_SPI_CLK MMCM_BUFIO_N --> MMCM_OR_BUFIO_N SERDES_DDR_N --> SERDES_OR_DDR_N CLK_ASYNC --> ASYNC_CLK CLKS_ASYNC --> ASYNC_CLK SERDES --> SERDES_OR_DDR_N GTH_GTX_N --> GTH_OR_GTX_N IF_TYPE --> DDR_OR_SDR_N PARALLEL_WIDTH --> DATA_WIDTH ADD_SUB --> ADD_OR_SUB_N A_WIDTH --> A_DATA_WIDTH CONST_VALUE --> B_DATA_VALUE IO_BASEADDR --> BASE_ADDRESS IO_WIDTH --> DATA_WIDTH QUAD_DUAL_N --> QUAD_OR_DUAL_N AXI_ADDRLIMIT --> AXI_ADDRESS_LIMIT ADDRESS_A_DATA_WIDTH --> A_ADDRESS_WIDTH ADDRESS_B_DATA_WIDTH --> B_ADDRESS_WIDTH MODE_OF_ENABLE --> CONTROL_TYPE CONTROL_TYPE --> LEVEL_OR_PULSE_N IQSEL --> Q_OR_I_N MMCM --> MMCM_OR_BUFR_N
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localparam ADC_ADDR_LIMIT = (2**ADC_ADDRESS_WIDTH)-1;
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localparam DMA_ADDR_LIMIT = (2**DMA_ADDRESS_WIDTH)-1;
// internal registers
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reg [ 2:0] adc_xfer_req_m = 'd0;
reg adc_xfer_init = 'd0;
reg adc_xfer_enable = 'd0;
reg adc_wr_int = 'd0;
reg [ADC_DATA_WIDTH-1:0] adc_wdata_int = 'd0;
reg [ADC_ADDRESS_WIDTH-1:0] adc_waddr_int = 'd0;
reg adc_capture_arm = 1'b0;
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reg dma_rd = 'd0;
reg dma_rd_d = 'd0;
reg [DMA_DATA_WIDTH-1:0] dma_rdata_d = 'd0;
reg [DMA_ADDRESS_WIDTH:0] dma_raddr = 'd0;
reg [DMA_ADDRESS_WIDTH-1:0] dma_waddr_int = 'd0;
reg dma_endof_read = 'd0;
// internal signals
wire adc_rst_s;
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wire dma_wready_s;
wire [DMA_DATA_WIDTH-1:0] dma_rdata_s;
wire dma_read_rst_s;
wire dma_wr_int_s;
wire [ADC_ADDRESS_WIDTH-1:0] dma_waddr_int_s;
wire adc_end_of_capture_s;
wire [ADC_ADDRESS_WIDTH-1:0] adc_waddr_int_s;
// write interface
assign adc_wovf = 1'd0;
// synchronize the adc_rst to the adc_clk clock domain
ad_rst i_adc_rst_sync (
.rst_async (adc_rst),
.clk (adc_clk),
.rstn (),
.rst (adc_rst_s));
// optional capture synchronization
always @(posedge adc_clk) begin
if (adc_rst_s == 1'b1) begin
adc_xfer_req_m <= 'd0;
end else begin
adc_xfer_req_m <= {adc_xfer_req_m[1:0], dma_xfer_req};
end
end
always @(posedge adc_clk) begin
if (adc_rst_s == 1'b1) begin
adc_xfer_init <= 'd0;
end else begin
adc_xfer_init <= adc_xfer_req_m[1] & ~adc_xfer_req_m[2];
end
end
// a de-asserted xfer_req will reset the FIFO
assign dma_wr = dma_wr_int_s & dma_xfer_req;
assign adc_end_of_capture_s = ((adc_waddr_int_s == ADC_ADDR_LIMIT) || (adc_xfer_req_m[2] == 1'b0)) &&
(adc_wr_int == 1'b1);
always @(posedge adc_clk) begin
if (adc_rst_s == 1'b1) begin
adc_xfer_enable <= 'd0;
end else begin
if (adc_xfer_init == 1'b1) begin
adc_xfer_enable <= 1'b1;
end else if (adc_end_of_capture_s == 1'b1) begin
adc_xfer_enable <= 1'b0;
end
end
end
assign adc_waddr_int_s = (adc_waddr_int == ADC_ADDR_LIMIT) ? adc_waddr_int : adc_waddr_int + 1'b1;
always @(posedge adc_clk) begin
if (adc_xfer_req_m[2] == 1'b0) begin
adc_wr_int <= 'd0;
adc_wdata_int <= 'd0;
adc_waddr_int <= 'd0;
end else begin
adc_wr_int <= adc_wr & adc_xfer_enable;
adc_wdata_int <= adc_wdata;
if (adc_wr_int == 1'b1) begin
adc_waddr_int <= adc_waddr_int_s;
end
end
end
// read interface
assign dma_xfer_status = 4'd0;
// write address synchronization
sync_gray #(
.DATA_WIDTH (ADC_ADDRESS_WIDTH),
.ASYNC_CLK (1)
) i_dma_waddr_sync (
.in_clk (adc_clk),
.in_resetn (1'b1),
.in_count (adc_waddr_int),
.out_resetn (1'b1),
.out_clk (dma_clk),
.out_count (dma_waddr_int_s));
always @(posedge dma_clk) begin
if (dma_read_rst_s == 1'b1) begin
dma_waddr_int <= 'd0;
end else begin
dma_waddr_int <= {dma_waddr_int_s,{ADDRESS_PADDING_WIDTH{1'b0}}};
end
end
assign dma_read_rst_s = ~dma_xfer_req;
assign dma_wready_s = (DMA_READY_ENABLE == 0) ? 1'b1 : dma_wready;
assign dma_rd_s = ((dma_raddr < {1'b0, dma_waddr_int}) || &dma_waddr_int) & dma_wready_s;
always @(posedge dma_clk) begin
if (dma_read_rst_s == 1'b1) begin
dma_rd <= 'd0;
dma_rd_d <= 'd0;
dma_rdata_d <= 'd0;
dma_raddr <= 'd0;
dma_endof_read <= 'd0;
end else begin
if (dma_waddr_int != 'd0) begin
dma_rd <= dma_rd_s;
if (dma_rd_s == 1'b1) begin
dma_raddr <= dma_raddr + 1'b1;
end
end
dma_rd_d <= dma_rd;
dma_rdata_d <= dma_rdata_s;
end
end
// instantiations
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generate
if (FPGA_TECHNOLOGY == 1) begin
mem_asym i_mem_asym (
.mem_i_wrclock_clk (adc_clk),
.mem_i_wren_wren (adc_wr_int),
.mem_i_wraddress_wraddress (adc_waddr_int),
.mem_i_datain_datain (adc_wdata_int),
.mem_i_rdclock_clk (dma_clk),
.mem_i_rdaddress_rdaddress (dma_raddr[DMA_ADDRESS_WIDTH-1:0]),
.mem_o_dataout_dataout (dma_rdata_s));
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end else begin
ad_mem_asym #(
hdl/library: Update the IP parameters The following IP parameters were renamed: PCORE_ID --> ID PCORE_DEVTYPE --> DEVICE_TYPE PCORE_IODELAY_GROUP --> IO_DELAY_GROUP CH_DW --> CHANNEL_DATA_WIDTH CH_CNT --> NUM_OF_CHANNELS PCORE_BUFTYPE --> DEVICE_TYPE PCORE_ADC_DP_DISABLE --> ADC_DATAPATH_DISABLE CHID --> CHANNEL_ID PCORE_DEVICE_TYPE --> DEVICE_TYPE PCORE_MMCM_BUFIO_N --> MMCM_BUFIO_N PCORE_SERDES_DDR_N --> SERDES_DDR_N PCORE_DAC_DP_DISABLE --> DAC_DATAPATH_DISABLE DP_DISABLE --> DATAPATH_DISABLE PCORE_DAC_IODELAY_ENABLE --> DAC_IODELAY_ENABLE C_BIG_ENDIAN --> BIG_ENDIAN C_M_DATA_WIDTH --> MASTER_DATA_WIDTH C_S_DATA_WIDTH --> SLAVE_DATA_WIDTH NUM_CHANNELS --> NUM_OF_CHANNELS CHANNELS --> NUM_OF_CHANNELS PCORE_4L_2L_N -->QUAD_OR_DUAL_N C_ADDRESS_WIDTH --> ADDRESS_WIDTH C_DATA_WIDTH --> DATA_WIDTH C_CLKS_ASYNC --> CLKS_ASYNC PCORE_QUAD_DUAL_N --> QUAD_DUAL_N NUM_CS --> NUM_OF_CS PCORE_DAC_CHANNEL_ID --> DAC_CHANNEL_ID PCORE_ADC_CHANNEL_ID --> ADC_CHANNEL_ID PCORE_CLK0_DIV --> CLK0_DIV PCORE_CLK1_DIV --> CLK1_DIV PCORE_CLKIN_PERIOD --> CLKIN_PERIOD PCORE_VCO_DIV --> VCO_DIV PCORE_Cr_Cb_N --> CR_CB_N PCORE_VCO_MUL --> VCO_MUL PCORE_EMBEDDED_SYNC --> EMBEDDED_SYNC PCORE_AXI_ID_WIDTH --> AXI_ID_WIDTH PCORE_ADDR_WIDTH --> ADDRESS_WIDTH DADATA_WIDTH --> DATA_WIDTH NUM_OF_NUM_OF_CHANNEL --> NUM_OF_CHANNELS DEBOUNCER_LEN --> DEBOUNCER_LENGTH ADDR_WIDTH --> ADDRESS_WIDTH C_S_AXIS_REGISTERED --> S_AXIS_REGISTERED Cr_Cb_N --> CR_CB_N ADDATA_WIDTH --> ADC_DATA_WIDTH BUFTYPE --> DEVICE_TYPE NUM_BITS --> NUM_OF_BITS WIDTH_A --> A_DATA_WIDTH WIDTH_B --> B_DATA_WIDTH CH_OCNT --> NUM_OF_CHANNELS_O M_CNT --> NUM_OF_CHANNELS_M P_CNT --> NUM_OF_CHANNELS_P CH_ICNT --> NUM_OF_CHANNELS_I CH_MCNT --> NUM_OF_CHANNELS_M 4L_2L_N --> QUAD_OR_DUAL_N SPI_CLK_ASYNC --> ASYNC_SPI_CLK MMCM_BUFIO_N --> MMCM_OR_BUFIO_N SERDES_DDR_N --> SERDES_OR_DDR_N CLK_ASYNC --> ASYNC_CLK CLKS_ASYNC --> ASYNC_CLK SERDES --> SERDES_OR_DDR_N GTH_GTX_N --> GTH_OR_GTX_N IF_TYPE --> DDR_OR_SDR_N PARALLEL_WIDTH --> DATA_WIDTH ADD_SUB --> ADD_OR_SUB_N A_WIDTH --> A_DATA_WIDTH CONST_VALUE --> B_DATA_VALUE IO_BASEADDR --> BASE_ADDRESS IO_WIDTH --> DATA_WIDTH QUAD_DUAL_N --> QUAD_OR_DUAL_N AXI_ADDRLIMIT --> AXI_ADDRESS_LIMIT ADDRESS_A_DATA_WIDTH --> A_ADDRESS_WIDTH ADDRESS_B_DATA_WIDTH --> B_ADDRESS_WIDTH MODE_OF_ENABLE --> CONTROL_TYPE CONTROL_TYPE --> LEVEL_OR_PULSE_N IQSEL --> Q_OR_I_N MMCM --> MMCM_OR_BUFR_N
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.A_ADDRESS_WIDTH (ADC_ADDRESS_WIDTH),
.A_DATA_WIDTH (ADC_DATA_WIDTH),
.B_ADDRESS_WIDTH (DMA_ADDRESS_WIDTH),
.B_DATA_WIDTH (DMA_DATA_WIDTH)
) i_mem_asym (
.clka (adc_clk),
.wea (adc_wr_int),
.addra (adc_waddr_int),
.dina (adc_wdata_int),
.clkb (dma_clk),
.reb (1'b1),
.addrb (dma_raddr[DMA_ADDRESS_WIDTH-1:0]),
.doutb (dma_rdata_s));
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end
endgenerate
ad_axis_inf_rx #(
.DATA_WIDTH(DMA_DATA_WIDTH)
) i_axis_inf (
.clk (dma_clk),
.rst (dma_read_rst_s),
.valid (dma_rd_d),
.last (1'd0),
.data (dma_rdata_d),
.inf_valid (dma_wr_int_s),
.inf_last (),
.inf_data (dma_wdata),
.inf_ready (dma_wready));
endmodule