ADF4156 FMC-SDP轉(zhuǎn)接器和評(píng)估板/Xilinx KC705參考設(shè)計(jì)
資料介紹
Table of Contents
ADF4156 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-ADF4156SD1Z evaluation board together with the Xilinx KC705 FPGA board and the Xilinx Embedded Development Kit (EDK). Below is presented a picture of the EVAL-ADF4156SD1Z Evaluation Board with the Xilinx KC705 board.
For component evaluation and performance purposes, as opposed to quick prototyping, the user is directed to Analog Devices System Demonstration Platform (SDP). The SDP consists of a:
- a controller board, like the EVAL-SDP-CS1Z (SDP-S)
- a compatible Analog Devices SDP product evaluation board
- corresponding PC software
The EVAL-SDP-CS1Z controller board is Serial Interfaces Only, low cost, reduced functionality controller board. It has a USB to Serial Engine at its core. It connects to the PC through a USB 2.0 high speed port. The SDP-S has a single 120 pin connector and exposes SPI, I2C and GPIO interfaces to connected SDP daughter boards.
The EVAL-ADF4156SD1Z is designed to allow the user to evaluate the performance of the ADF4156 frequency synthesizer for phase-locked loops (PLLs). Figure 1 shows the board, which contains the ADF4156 synthesizer, an SMA connector for the reference input, power supplies, and an RF output. There is also a footprint for a loop filter and a VCO on board.
The ADF4156 is a 6.2 GHz fractional-N frequency synthesizer that implements local oscillators in the upconversion and down-conversion sections of wireless receivers and transmitters. It consists of a low noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider. There is a Σ-Δ based fractional interpolator to allow programmable fractional-N division. The INT, FRAC, and MOD registers define an overall N divider (N = (INT + (FRAC/MOD))). The RF output phase is programmable for applications that require a particular phase relationship between the output and the reference. The ADF4156 also features cycle slip reduction circuitry, leading to faster lock times without the need for modifications to the loop filter.
More information
- ADF4156 Product Info - pricing, samples, datasheet
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
- FMC-SDP adapter board
- EVAL-ADF4156SD1Z evaluation board
Required Software
- Xilinx ISE 14.6.
- UART Terminal (Termite/Tera Term/Hyperterminal), baud rate 115200.
- The EVAL-ADF4156 reference project for Xilinx KC705 FPGA.
Downloads
- Xilinx Boards Common Drivers: https://github.com/analogdevicesinc/no-OS/tree/master/platform_drivers/Xilinx/SDP_Common
- EDK KC705 Reference project: https://github.com/analogdevicesinc/fpgahdl_xilinx/tree/master/cf_sdp_kc705
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-ADF4156 reference project for Xilinx KC705 FPGA board.
Command | Description |
---|---|
help? | Displays all available commands. |
frequency= | Sets the desired output frequency in MHz. Accepted values: 500 … 6200 - desired output frequency in MHz. |
frequency? | Displays the output frequency in MHz. |
register= | Sets the value of the desired register on 29 bits. Accepted values: register: 0 .. 4 - the selected register. value: 0 .. 0x1FFFFFFF - the new value of the register. |
register? | Displays the value of the desired register. Accepted values: 0 .. 4 - the selected register. |
PFDfreq? | Displays the current PFD frequency in MHz. |
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.
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:
- First download the KC705 Reference project from Github on your computer. You can do this by clonning this repository: https://github.com/analogdevicesinc/fpgahdl_xilinx.
- From this entire repository you will use cf_sdp_kc705 folder. This is common for all KC705 projects.
- 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.
- In the Import window select the General→Existing Projects into Workspace option.
- 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.
- The Project Explorer window now shows the projects that exist in the workspace without software files.
- 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.
- 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.
- 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.
More information
- Example questions:
- An error occurred while fetching this feed: http://ez.analog.com/community/feeds/allcontent/atom?community=2061
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