Update parameters for cn0577 and axi_ltc2387

docs/library/axi_ltc2387/index.rst

@@ -7,8 +7,7 @@ AXI LTC2387
    :path: library/axi_ltc2387
 
 The :git-hdl:`AXI LTC2387 <library/axi_ltc2387>` IP core can be used to
-interface :adi:`LTC2387-18`, :adi:`LTC2386-18`, :adi:`LTC2385-18` and
-:adi:`ADAQ23878` devices.
+interface :adi:`LTC2387-18`, :adi:`LTC2387-16` and :adi:`ADAQ23878` devices.
 
 This documentation only covers the IP core and requires that one must be
 familiar with the device for a complete and better understanding.
@@ -74,15 +73,10 @@ From the HDL perspective, the selection between the 16-bit and the 18-bit
 version of the chip, is done by the `ADC_RES` and `OUT_RES` parameters of
 the modules.
 
-* For the 18-bit, ADC_RES=18 (=> OUT_RES=32; addresses should be on a nb. of
+* For the 18-bit, ADC_RES=18 (=> OUT_RES=32; addresses should be on a no. of
   bits power of 2)
 * For the 16-bit, ADC_RES=16 (=> OUT_RES=16)
 
-.. warning::
-
-   When using the ONE LANE configuration (TWOLANES=0), the only resolution
-   supported is 18 bits!
-
 Detailed Description
 --------------------------------------------------------------------------------
 
@@ -143,7 +137,8 @@ system level.
 The :ref:`axi_ltc2387 interface` must be connected directly to the top file of
 the design, as I/O primitives are part of the IP.
 
-The example design uses a DMA to move the data from the output of the IP to memory.
+The example design uses a DMA to move the data from the output of the IP to
+memory.
 
 If the data needs to be processed in HDL before moving to the memory, it can be
 done at the output of the IP (at the system level) or inside the ADC interface
@@ -169,8 +164,7 @@ References
 * HDL project at :git-hdl:`projects/cn0577`
 * HDL project documentation at :ref:`cn0577`
 * :adi:`LTC2387-18` 18-bit 15 MSPS
-* :adi:`LTC2386-18` 18-bit 10 MSPS
-* :adi:`LTC2385-18` 18-bit 5 MSPS
+* :adi:`LTC2387-16` 16-bit 15 MSPS
 * :adi:`ADAQ23878` 18-bit 15 MSPS
 * :xilinx:`Zynq-7000 SoC Overview <support/documentation/data_sheets/ds190-Zynq-7000-Overview.pdf>`.
 * :xilinx:`Zynq-7000 SoC Packaging and Pinout <support/documentation/user_guides/ug865-Zynq-7000-Pkg-Pinout.pdf>`.

docs/projects/cn0577/index.rst

@@ -7,9 +7,9 @@ Overview
 -------------------------------------------------------------------------------
 
 The :adi:`CN0577` provides an analog front-end and an FMC
-digital interface for :adi:`LTC2387-18`, its core. It is a low noise, high
-speed successive approximation register (SAR) ADC with a resolution of 18 bits
-and sampling rate up to 15MSPS.
+digital interface for :adi:`LTC2387-18`/ :adi:`LTC2387-16` its core. It is a low
+noise, high speed successive approximation register (SAR) ADC with a resolution
+of 18/16 bits and sampling rate up to 15MSPS.
 
 :adi:`CN0577` includes an on-board reference oscillator and a
 retiming circuit to minimize signal-to-noise ratio (SNR) degradation due to the
@@ -30,6 +30,7 @@ Supported devices
 
 - :adi:`ADAQ23876`
 - :adi:`LTC2387-18`
+- :adi:`LTC2387-16`
 
 Supported carriers
 -------------------------------------------------------------------------------
@@ -60,6 +61,11 @@ Configuration modes
   - 1 - two-lane output mode (default)
   - 0 - one-lane output mode
 
+- ADC_RES: resolution in bits
+
+  - 18 - 18 bits ADC resolution (default)
+  - 16 - 16 bits ADC resoluton
+
 Jumper setup
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -183,6 +189,7 @@ Hardware related
 - Product datasheets:
 
   - :adi:`LTC2387-18`
+  - :adi:`LTC2387-16`
 
 - `Circuit Note CN0577 <https://www.analog.com/media/en/reference-design-documentation/reference-designs/cn0577.pdf>`__
 

library/axi_ltc2387/axi_ltc2387.v

@@ -1,6 +1,6 @@
 // ***************************************************************************
 // ***************************************************************************
-// Copyright (C) 2022-2024 Analog Devices, Inc. All rights reserved.
+// Copyright (C) 2022-2025 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
@@ -52,7 +52,7 @@ module axi_ltc2387 #(
   parameter OUT_RES = 32, // 32-bit for ADC_RES=18 or 16-bit for ADC_RES=16
   parameter TWOLANES = 1
 ) (
-  input                     delay_clk,
+  input                    delay_clk,
 
   // adc interface
 
@@ -159,7 +159,7 @@ module axi_ltc2387 #(
     .FPGA_TECHNOLOGY (FPGA_TECHNOLOGY),
     .IO_DELAY_GROUP (IO_DELAY_GROUP),
     .DELAY_REFCLK_FREQUENCY (DELAY_REFCLK_FREQUENCY),
-    .RESOLUTION (ADC_RES),
+    .ADC_RES (ADC_RES),
     .IODELAY_CTRL (IODELAY_CTRL),
     .TWOLANES (TWOLANES)
   ) i_if (

library/axi_ltc2387/axi_ltc2387_channel.v

@@ -101,7 +101,13 @@ module axi_ltc2387_channel #(
 
   assign adc_pn_err_s = adc_pn_err;
 
-  // expected pattern
+  // expected patterns:
+  // 18-bit, one-lane: 10 1000 0001 1111 1100
+  // 16-bit, one-lane: 10 1000 0001 1111 11
+  // 18-bit, two-lane: 11 0011 0000 1111 1100
+  // 16-bit, one-lane: 11 0011 0000 1111 11
+  // basically, the 16-bit variant doesn't have the LSBs 00
+  // so we can sum this up as the 16-bit expected pattern + 2 zeroes for the 18-bit one
 
   generate
     if (TWOLANES == 1) begin

library/axi_ltc2387/axi_ltc2387_if.v

@@ -1,6 +1,6 @@
 // ***************************************************************************
 // ***************************************************************************
-// Copyright (C) 2022-2024 Analog Devices, Inc. All rights reserved.
+// Copyright (C) 2022-2025 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
@@ -44,7 +44,7 @@ module axi_ltc2387_if #(
   parameter IODELAY_CTRL = 1,
   parameter DELAY_REFCLK_FREQUENCY = 200,
   parameter TWOLANES = 1,    // 0 for one-lane, 1 for two lanes
-  parameter RESOLUTION = 18  // 16 or 18 bits
+  parameter ADC_RES = 18  // 16 or 18 bits
 ) (
 
   // delay interface
@@ -68,12 +68,12 @@ module axi_ltc2387_if #(
   input             db_p,
   input             db_n,
 
-  output reg                  adc_valid,
-  output reg [RESOLUTION-1:0] adc_data
+  output reg               adc_valid,
+  output reg [ADC_RES-1:0] adc_data
 );
 
-  localparam ONE_L_WIDTH = (RESOLUTION == 18) ? 9 : 8;
-  localparam TWO_L_WIDTH = (RESOLUTION == 18) ? 5 : 4;
+  localparam ONE_L_WIDTH = (ADC_RES == 18) ? 9 : 8;
+  localparam TWO_L_WIDTH = (ADC_RES == 18) ? 5 : 4;
   localparam WIDTH = (TWOLANES == 0) ? ONE_L_WIDTH : TWO_L_WIDTH;
 
   // internal wires
@@ -100,7 +100,7 @@ module axi_ltc2387_if #(
     adc_valid <= 1'b0;
     clk_gate_d <= {clk_gate_d[1:0], clk_gate};
     if (clk_gate_d[1] == 1'b1 && clk_gate_d[0] == 1'b0) begin
-      if (RESOLUTION == 18) begin
+      if (ADC_RES == 18) begin
         adc_data <= adc_data_int;
         adc_valid <= 1'b1;
       end else begin
@@ -113,8 +113,13 @@ module axi_ltc2387_if #(
   always @(posedge dco) begin
     adc_data_da_p <= {adc_data_da_p[WIDTH-1:0], da_p_int_s};
     adc_data_da_n <= {adc_data_da_n[WIDTH-1:0], da_n_int_s};
-    adc_data_db_p <= {adc_data_db_p[WIDTH-1:0], db_p_int_s};
-    adc_data_db_n <= {adc_data_db_n[WIDTH-1:0], db_n_int_s};
+    if (TWOLANES) begin
+      adc_data_db_p <= {adc_data_db_p[WIDTH-1:0], db_p_int_s};
+      adc_data_db_n <= {adc_data_db_n[WIDTH-1:0], db_n_int_s};
+    end else begin
+      adc_data_db_p <= 'd0;
+      adc_data_db_n <= 'd0;
+    end
   end
 
   // bits rearrangement
@@ -139,7 +144,7 @@ module axi_ltc2387_if #(
     assign adc_data_int[1] = da_p_int_s;
     assign adc_data_int[0] = da_n_int_s;
   end else begin
-    if (RESOLUTION == 18) begin
+    if (ADC_RES == 18) begin
       assign adc_data_int[17] = adc_data_da_p[3];
       assign adc_data_int[16] = adc_data_db_p[3];
       assign adc_data_int[15] = adc_data_da_n[3];
@@ -200,25 +205,34 @@ module axi_ltc2387_if #(
     .delay_rst (delay_rst),
     .delay_locked (delay_locked));
 
-  ad_data_in #(
-    .FPGA_TECHNOLOGY (FPGA_TECHNOLOGY),
-    .IDDR_CLK_EDGE ("OPPOSITE_EDGE"),
-    .IODELAY_CTRL (0),
-    .IODELAY_GROUP (IO_DELAY_GROUP),
-    .REFCLK_FREQUENCY (DELAY_REFCLK_FREQUENCY)
-  ) i_rx_db (
-    .rx_clk (dco),
-    .rx_data_in_p (db_p),
-    .rx_data_in_n (db_n),
-    .rx_data_p (db_p_int_s),
-    .rx_data_n (db_n_int_s),
-    .up_clk (up_clk),
-    .up_dld (up_dld[1]),
-    .up_dwdata (up_dwdata[9:5]),
-    .up_drdata (up_drdata[9:5]),
-    .delay_clk (delay_clk),
-    .delay_rst (delay_rst),
-    .delay_locked ());
+  // instantiate only if TWOLANES
+  if (TWOLANES) begin
+    ad_data_in #(
+      .FPGA_TECHNOLOGY (FPGA_TECHNOLOGY),
+      .IDDR_CLK_EDGE ("OPPOSITE_EDGE"),
+      .IODELAY_CTRL (0),
+      .IODELAY_GROUP (IO_DELAY_GROUP),
+      .REFCLK_FREQUENCY (DELAY_REFCLK_FREQUENCY)
+    ) i_rx_db (
+      .rx_clk (dco),
+      .rx_data_in_p (db_p),
+      .rx_data_in_n (db_n),
+      .rx_data_p (db_p_int_s),
+      .rx_data_n (db_n_int_s),
+      .up_clk (up_clk),
+      .up_dld (up_dld[1]),
+      .up_dwdata (up_dwdata[9:5]),
+      .up_drdata (up_drdata[9:5]),
+      .delay_clk (delay_clk),
+      .delay_rst (delay_rst),
+      .delay_locked ());
+  end else begin
+    // when in one-lane mode, tie them to 0,
+    // otherwise the input pin of input buffer
+    // will have an illegal connection to logic constant value
+    assign db_p_int_s = 1'b0;
+    assign db_n_int_s = 1'b0;
+  end
 
   // clock
 

library/axi_ltc2387/axi_ltc2387_ip.tcl

@@ -1,5 +1,5 @@
 ###############################################################################
-## Copyright (C) 2022-2024 Analog Devices, Inc. All rights reserved.
+## Copyright (C) 2022-2025 Analog Devices, Inc. All rights reserved.
 ### SPDX short identifier: ADIBSD
 ###############################################################################
 
@@ -31,68 +31,72 @@ adi_ip_files axi_ltc2387 [list \
 
 adi_ip_properties axi_ltc2387
 
-set cc [ipx::current_core]
-set page0 [ipgui::get_pagespec -name "Page 0" -component $cc]
+ipx::infer_bus_interface ref_clk xilinx.com:signal:clock_rtl:1.0 [ipx::current_core]
+ipx::infer_bus_interface dco_p xilinx.com:signal:clock_rtl:1.0 [ipx::current_core]
+ipx::infer_bus_interface dco_n xilinx.com:signal:clock_rtl:1.0 [ipx::current_core]
 
-ipx::infer_bus_interface ref_clk xilinx.com:signal:clock_rtl:1.0 $cc
-ipx::infer_bus_interface dco_p xilinx.com:signal:clock_rtl:1.0 $cc
-ipx::infer_bus_interface dco_n xilinx.com:signal:clock_rtl:1.0 $cc
+set cc [ipx::current_core]
 
-ipgui::add_static_text -name {Warning} -component $cc -parent $page0 -text {In one-lane mode, only 18-bit resolution is supported!
-Output data width (OUT_RES) depends on ADC_RES!}
+set page0 [ipgui::get_pagespec -name "Page 0" -component $cc]
 
 ipx::add_user_parameter ADC_RES $cc
 set_property value_resolve_type user [ipx::get_user_parameters ADC_RES -of_objects $cc]
 ipgui::add_param -name "ADC_RES" -component $cc -parent $page0
 set_property -dict [list \
-  "display_name" "ADC_RES" \
-  "layout" "horizontal" \
-  "tooltip" "ADC resolution" \
+  "display_name" "ADC resolution" \
+  "tooltip" "ADC_RES" \
   "widget" "radioGroup" \
+  "layout" "horizontal" \
 ] [ipgui::get_guiparamspec -name "ADC_RES" -component $cc]
 
 set_property -dict [list \
-  "value" "18" \
   "value_format" "long" \
   "value_validation_type" "list" \
-  "value_validation_list" "18 16" \
+  "value_validation_list" "16 18" \
 ] [ipx::get_user_parameters ADC_RES -of_objects $cc]
 
-# OUT_RES depends on the value of ADC_RES, and is set in the project
 ipx::add_user_parameter OUT_RES $cc
 set_property value_resolve_type user [ipx::get_user_parameters OUT_RES -of_objects $cc]
 ipgui::add_param -name "OUT_RES" -component $cc -parent $page0
 set_property -dict [list \
-  "display_name" "OUT_RES" \
-  "layout" "horizontal" \
-  "tooltip" "Output data width" \
+  "display_name" "Output data width" \
+  "tooltip" "OUT_RES" \
   "widget" "radioGroup" \
+  "layout" "horizontal" \
 ] [ipgui::get_guiparamspec -name "OUT_RES" -component $cc]
 
 set_property -dict [list \
-  "value" "32" \
   "value_format" "long" \
   "value_validation_type" "list" \
-  "value_validation_list" "32 16" \
+  "value_validation_list" "16 32" \
 ] [ipx::get_user_parameters OUT_RES -of_objects $cc]
 
 ipx::add_user_parameter TWOLANES $cc
 set_property value_resolve_type user [ipx::get_user_parameters TWOLANES -of_objects $cc]
 ipgui::add_param -name "TWOLANES" -component $cc -parent $page0
 set_property -dict [list \
-  "display_name" "TWOLANES" \
-  "layout" "horizontal" \
-  "tooltip" "Two-lane mode (1) or one-lane mode (0)" \
+  "display_name" "Lane mode" \
+  "tooltip" "TWOLANES" \
   "widget" "radioGroup" \
+  "layout" "horizontal" \
 ] [ipgui::get_guiparamspec -name "TWOLANES" -component $cc]
 
 set_property -dict [list \
-  "value" "1" \
   "value_format" "long" \
   "value_validation_type" "list" \
-  "value_validation_list" "1 0" \
+  "value_validation_list" "0 1" \
 ] [ipx::get_user_parameters TWOLANES -of_objects $cc]
 
+# if TWOLANES=0, disable and tie to GND, ports db_p, db_n
+adi_set_ports_dependency "db_p" \
+  "(spirit:decode(id('MODELPARAM_VALUE.TWOLANES')) == 1)"
+adi_set_ports_dependency "db_n" \
+  "(spirit:decode(id('MODELPARAM_VALUE.TWOLANES')) == 1)"
+
+set_property driver_value 0 [ipx::get_ports -filter "direction==in" -of_objects $cc]
+
+#adi_add_auto_fpga_spec_params
+
 ipx::create_xgui_files $cc
 ipx::update_checksums $cc
 ipx::save_core $cc

projects/cn0577/README.md

@@ -1,6 +1,10 @@
 # CN0577 HDL Project
 
-- Evaluation board product page: [EVAL-CN0577](https://www.analog.com/cn0577)
+- Evaluation board product page:
+  - [EVAL-CN0577](https://www.analog.com/cn0577)
+  - [EVAL-ADAQ23878](https://analog.com/eval-adaq23878)
+  - [EVAL-ADAQ23876](https://analog.com/eval-adaq23876)
+  - [EVAL-ADAQ23875](https://analog.com/eval-adaq23875)
 - System documentation: https://wiki.analog.com/resources/eval/user-guides/circuits-from-the-lab/cn0577 
 - HDL project documentation: http://analogdevicesinc.github.io/hdl/projects/cn0577/index.html
 - Evaluation board VADJ: 2.5V
@@ -9,8 +13,11 @@
 
 | Part name                               | Description                                               |
 |-----------------------------------------|-----------------------------------------------------------|
-| [ADAQ23876](https://www.analog.com/ADAQ23876) | 16-Bit, 15 MSPS, μModule Data Acquisition Solution |
 | [LTC2387-18](https://www.analog.com/LTC2387-18) | 18-Bit, 15 MSPS, SAR ADC |
+| [LTC2387-16](https://www.analog.com/LTC2387-16) | 16-Bit, 15 MSPS, SAR ADC |
+| [ADAQ23878](https://www.analog.com/ADAQ23878) | 18-Bit, 15 MSPS, μModule Data Acquisition Solution |
+| [ADAQ23876](https://www.analog.com/ADAQ23876) | 16-Bit, 15 MSPS, μModule Data Acquisition Solution |
+| [ADAQ23875](https://www.analog.com/ADAQ23875) | 16-Bit, 15 MSPS, μModule Data Acquisition Solution |
 
 ## Building the project