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This version (20 Feb 2012 16:17) was approved by Dragos Bogdan.
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Table of Contents
CN0209 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-CN0209-SDPZ evaluation board together with the Xilinx KC705 FPGA board, the Xilinx Embedded Development Kit (EDK) and the Micrium µC-Probe run-time monitoring tool. Below is presented a picture of the EVAL-AD5172SDZ 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-CB1Z (SDP-B)
- a compatible Analog Devices SDP product evaluation board
- corresponding PC software
The EVAL-SDP-CB1Z controller board is part of Analog Devices SDP providing USB 2.0 high-speed connectivity to a PC computer running specific component evaluation software. Each SDP evaluation daughter board includes the necessary installation files needed for this performance testing. It's expected that the analog performance on the two platforms may differ.
Below is presented a picture of SDP-B Controller Board with the EVAL-CN0209-SDPZ Evaluation Board.
The EVAL-CN0209-SDPZ evaluation board is a member of a growing number of boards available for the SDP. It provides a fully programmable universal analog front end (AFE) for process control applications. The following inputs are supported: 2-, 3-, and 4- wire RTD configurations, thermocouple inputs with cold junction compensation, unipolar and bipolar input voltages, and 4 mA-to-20 mA inputs. When using this evaluation board with the SDP board or BeMicro SDK board, apply +15 V, -15 V, and GND to Connector J3.
The AD7193 is a low noise, complete analog front end for high precision measurement applications. It contains a low noise, 24-bit sigma-delta (S-?) analog-to-digital converter (ADC). The on-chip low noise gain stage means that signals of small amplitude can interface directly to the ADC.
The device can be configured to have four differential inputs or eight pseudo differential inputs. The on-chip channel sequencer allows several channels to be enabled simultaneously, and the AD7193 sequentially converts on each enabled channel, simplifying communication with the part. The on-chip 4.92 MHz clock can be used as the clock source to the ADC or, alternatively, an external clock or crystal can be used. The output data rate from the part can be varied from 4.7 Hz to 4.8 kHz.
The device has a very flexible digital filter, including a fast settling option. Variables such as output data rate and settling time are dependent on the option selected. The AD7193 also includes a zero latency option.
The ADT7310 is a high accuracy digital temperature sensor in a narrow SOIC package. It contains a band gap temperature reference and a 13-bit ADC to monitor and digitize the temperature to a 0.0625°C resolution. The ADC resolution, by default, is set to 13 bits (0.0625 °C). This can be changed to 16 bits (0.0078 °C) by setting Bit 7 in the configuration register (Register Address 0x01).
The ADT7310 is guaranteed to operate over supply voltages from 2.7 V to 5.5 V. Operating at 3.3 V, the average supply current is typically 210 µA. The ADT7310 has a shutdown mode that powers down the device and offers a shutdown current of typically 2 µA. The ADT7310 is rated for operation over the -55°C to +150°C temperature range.
The CT pin is an open-drain output that becomes active when the temperature exceeds a programmable critical temperature limit. The default critical temperature limit is 147°C. The INT pin is also an open-drain output that becomes active when the temperature exceeds a programmable limit. The INT and CT pins can operate in either comparator or interrupt mode.
More information
- CN0209 Product Info - pricing, samples, datasheet
- AD7193 Product Info - pricing, samples, datasheet
- ADT7310 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-CN0209-SDPZ evaluation board
Required Software
- Xilinx ISE 13.4 (Programmer (IMPACT) is sufficient for the demo and is available on Webpack).
- uC-Probe run-time monitoring tool
Downloads
The following table presents a short description the reference design archive contents.
| Folder | Description |
|---|---|
| Bit | Contains the KC705 configuration file that can be used to program the system for quick evaluation. |
| Microblaze | Contains the EDK 13.4 project for the Microblaze softcore that will be implemented in the KC705 FPGA. |
| Software | Contains the source files of the software project that will be run by the Microblaze processor. |
| uCProbeInterface | Contains the uCProbe interface and the .elf symbols file used by uC-Probe to access data from the Microbalze memory. |
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.
- Start IMPACT, and double click “Boundary Scan”. Right click and select Initialize Chain. The program should recognize the Kintex 7 device (see screenshot below).
- Program the KC705 FPGA using the “Bit/download.bit” file provided in the reference design archive.
- Power the ADI evaluation board.
At this point everything is set up and it is possible to start the evaluation of the ADI hardware through the controls in the uC-Probe application provided in the reference design.
Configure uC-Probe
Launch uC-Probe from the Start → All Programs → Micrium → uC-Probe.
Select uC-Probe options.
- Click on the uC-Probe icon on the top left portion of the screen.
- Click on the Options button to open the dialog box.
Set target board communication protocol as RS-232
- Click on the Communication tab icon on the top left portion of the dialog box
- Select the RS-232 option.
Setup RS-232 communication settings
- Select the RS-232 option from the Communication tab.
- Select the COM port to which the KC705 board is connected.
- Set the Baud Rate to 115200 bps.
- Press Apply and OK to exit the options menu.
Load and Run the Demonstration Project
- Click the Open option from the uC-Probe menu and select the .wsp file from the ucProbeInterface folder provided within the reference design files.
- Before opening the interface uC-Probe will ask for a symbols file that must be associated with the interface. Select the file ucProbeInterface/ADIEvalBoard.elf to be loaded as a symbol file.
- Run the demonstration project by pressing the Play button.
- In some cases it is possible that the uC-Probe interface will not respond to the commands the first time it is ran. In this situation just stop the interface by pressing the Stop button and run it again by pressing the Play button.
- After starting the uC-Probe interface wait until the status of the connection with the board displayed on the bottom of the screen is set to Connected. It is possible to use the interface only after the status is changed to Connected and the data transfer speed displayed next to the connection status is different than 0.
Demonstration Project User Interface
The following figure presents the uC-Probe interface that can be used for monitoring and controlling the operation of the EVAL-CN0209-SDPZ evaluation board.
Section A is used to activate the board and monitor activity. The communication with the board is activated / deactivated by toggling the ON/OFF switch. The Activity LED turns green when the communication is active. If the ON/OFF switch is set to ON and the Activity LED is BLACK it means that there is a communication problem with the board. See the Troubleshooting section for indications on how to fix the communication problems.
Section B is used to read the ID and the Temperature from the ADT7310 part. Also, from this section, the serial interface with the ADT7310 part can be reset.
Section C is used to read the ID and the Temperature from the AD7193 part. Also, from this section, the serial interface with the ADT7193 part can be reset.
Section D is used to measure single input voltages, differential input voltages, currents and TCs. There are two input channels, so these measurements can be made for each one.
Troubleshooting
In case there is a communication problem with the board the follwing actions can be perfomed in order to try to fix the issues:
- Check that the evaluation board is powered as instructed in the board's user guide.
- In uC-Probe refresh the symbols file by right-clicking on the System Browser window and selecting Refresh Symbols.
- If the communication problem persists even after performing the previous steps, restart the uC-Probe application and try to run the interface again.
More information
resources/fpga/xilinx/interposer/cn0209.1329751075.txt.gz · Last modified: 20 Feb 2012 16:17 (external edit)