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This version (21 Oct 2013 16:08) was approved by LucianS.The Previously approved version (28 Sep 2012 13:17) is available.Diff

AD9838 FMC-SDP Interposer & Evaluation Board / Xilinx KC705 Reference Design

Supported Devices

Evaluation Boards

Overview

This document presents the steps to setup an environment for using the EVAL-AD9838SDZ evaluation board together with the Xilinx KC705 FPGA board and the Xilinx Embedded Development Kit (EDK). Below is presented a picture of the EVAL-AD9838SDZ Evaluation Board with the Xilinx KC705 board.

img_ad9838.jpg

For component evaluation and performance purposes, as opposed to quick prototyping, the user is directed to use the part evaluation setup. This consists of:

  • 1. A controller board like the SDP-B ( EVAL-SDP-CS1Z)
  • 2. The component SDP compatible product evaluation board
  • 3. Corresponding PC software ( shipped with the product evaluation board)

The SDP-B controller board is part of Analog Devices System Demonstration Platform (SDP). It provides a high speed USB 2.0 connection from the PC to the component evaluation board. The PC runs the evaluation software. Each evaluation board, which is an SDP compatible daughter board, includes the necessary installation file required for performance testing.

Note: it is expected that the analog performance on the two platforms may differ.

28 Sep 2012 10:32 · Adrian Costina

Below is presented a picture of SDP-B Controller Board with the EVAL-AD9838SDZ Evaluation Board.

The AD9838 is a 16 MHz low power DDS device capable of producing high performance sine and triangular outputs. It also has an on-board comparator that allows a square wave to be produced for clock generation. Consuming only 11 mW of power at 2.3 V makes the AD9838 an ideal candidate for power-sensitive applications.

The EVAL-AD9838SDZ evaluation board is designed to help customers quickly prototype new AD9838 circuits and reduce design time. A high performance, on-board 16 MHz trimmed general oscillator is available to use as the master clock for the AD9838 system. Various links and SMB connectors are also available on the EVAL-AD9838SDZ board to maximize usability.

More information

Getting Started

The first objective is to ensure that you have all of the items needed and to install the software tools so that you are ready to create and run the evaluation project.

Required Hardware

Required Software

  • Xilinx ISE 14.6.
  • UART Terminal (Termite/Tera Term/Hyperterminal), baud rate 115200.
  • The EVAL-AD9838 reference project for Xilinx KC705 FPGA.

Downloads

Run the Demonstration Project

Hardware setup


Before connecting the ADI evaluation board to the Xilinx KC705 make sure that the VADJ_FPGA voltage of the KC705 is set to 3.3V. For more details on how to change the setting for VADJ_FPGA visit the Xilinx KC705 product page.

  • Use the FMC-SDP interposer to connect the ADI evaluation board to the Xilinx KC705 board on the FMC LPC connector.
  • Connect the JTAG and UART cables to the KC705 and power up the FPGA board.

Reference Project Overview

The following commands were implemented in this version of EVAL-AD9838 reference project for Xilinx KC705 FPGA board.

Command Description
help? Displays all available commands.
output= Selects the type of output. Accepted values:
0 - Sinusoid.(default)
1 - Triangle.
output? Displays the type of output.
loadFreqReg= Loads a frequency value in one selected register. Accepted values:
Register number:
0 - Frequency Register 0.
1 - Frequency Register 1.
Value:
0 .. 8 000 000 - the frequency value in Hz.
freqRegVal? Displays the value from one selected frequency register. Accepted values:
Register number:
0 - Frequency Register 0.
1 - Frequency Register 1.
loadPhaseReg= Loads a phase value in one selected register. Accepted values:
Register number:
0 - Phase Register 0.
1 - Phase Register 1.
Value:
0 .. 2PI - the phase value in radians.
phaseRegVal? Displays the value from one selected phase register. Accepted values:
Register number:
0 - Phase Register 0.
1 - Phase Register 1.
freqRegNo= Select the frequency register to be used. Accepted values:
Register number:
0 - Frequency Register 0.
1 - Frequency Register 1.
freqRegNo? Displays the selected frequency register.
phaseRegNo= Select the phase register to be used. Accepted values:
Register number:
0 - Phase Register 0.
1 - Phase Register 1.
phaseRegNo? Displays the selected phase register.
sleepMode= Select one sleep mode. Accepted values:
Sleep mode:
Soft method:
0 - No power-down.(default)
1 - DAC powered down.
2 - Internal clock disabled.
3 - DAC powered down and Internal clock disabled.
Hard method:
0 - No power-down.(default)
1 - DAC powered down.
sleepMode? Displays the selected sleep mode.
program= Sets the programming method. Accepted values:
Method:
0 - Soft programming method.(default)
1 - Hard programming method.
program? Displays the programming method.
logicOut= Sets the logic output type. Accepted values:
Logic output type:
0 - High impedance.(default)
1 - DAC data MSB/2.
2 - DAC data MSB.
3 - Comparator.
logicOut? Displays the logic output type.

Commands can be executed using a serial terminal connected to the UART peripheral of Xilinx KC705 FPGA.

The following image shows a generic list of commands in a serial terminal connected to Xilinx KC705 FPGA's UART peripheral. terminal_kc705.jpg

Software Project Setup

The hardware platform for each reference projects with FMC-SDP interposer and KC705 evaluation board is common. The next steps should be followed to recreate the software project of the reference design:

Github Repository

  • From this entire repository you will use cf_sdp_kc705 folder. This is common for all KC705 projects.

EDK KC705 project

  • Open the Xilinx SDK. When the SDK starts, it asks you to provide a folder where to store the workspace. Any folder can be provided. Make sure that the path where it is located does not contain any spaces.
  • In the SDK select the File→Import menu option to import the software projects into the workspace.

Import Projects

  • In the Import window select the General→Existing Projects into Workspace option.

Existing Projects Import

  • In the Import Projects window select the cf_sdp_kc705 folder as root directory and check the Copy projects into workspace option. After the root directory is chosen the projects that reside in that directory will appear in the Projects list. Press Finish to finalize the import process.

Projects Import

  • The Project Explorer window now shows the projects that exist in the workspace without software files.

Project Explorer

  • Now the software must be added in your project. For downloading the software, you must use 3 links from Github given in Downloads section. From there you'll download the specific driver, the specific commands and the Xilinx Boards Common Drivers(which are commons for all Xilinx boards). All the software files downloaded must be copied in src folder from sw folder.

Project complete

  • Before compilation in the file called Communication.h you have to uncomment the name of the device that you currently use. In the picture below there is an example of this, which works only with AD5629R project. For another device, uncomment only the respective name. You can have one driver working on multiple devices, so the drivers's name and the uncommented name may not be the same for every project.

Communication.h

  • The SDK should automatically build the project and the Console window will display the result of the build. If the build is not done automatically, select the Project→Build Automatically menu option.
  • If the project was built without any errors, you can program the FPGA and run the software application.
13 Aug 2013 09:22 · Lucian Sin

More information

28 May 2012 15:18