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Summary of Contents for Texas Instruments LDC1101EVM
- Page 1 LDC1101EVM User Guide User's Guide Literature Number: SNOU137 May 2015...
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Page 2: Table Of Contents
Direct Register Access Page ......................3.15 EVM FW Protocol ....................EVM Design - Board Layout ..................... EVM Design - Schematic ......................EVM Bill of Materials .......................... Revision History Contents SNOU137 – May 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... - Page 3 Page Selection ....................3-9. Sleep Mode/Active Mode ..............3-10. Sensor Configuration with changed Sensor Capacitor ............. 3-11. LDC1101EVM Control Software: RP+L Page Streaming ........................ 3-12. RP+L Status ................3-13. RP+L Page Measurement Configuration ..............3-14. LDC1101 Control Software: LHR Page Streaming ........................
- Page 4 List of Tables ....................3-1. Streaming Data Structure List of Tables SNOU137 – May 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
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Page 5: Introduction
SNOU137 – May 2015 Introduction The Texas Instruments LDC1101 evaluation module (EVM) helps designers evaluate the operation and performance of the LDC1101 Inductance to Digital Converter. The EVM contains a low cost MSP430F5528 microcontroller which comes with pre-loaded firmware to communicate with LabVIEW™... -
Page 6: Evm Features And Connections
Chapter 2 SNOU137 – May 2015 EVM Features and Connections This section describes the connectors on the LDC1101EVM and how to properly connect, set up and use the LDC1101. The EVM block diagram is shown below. 1.8 V LP5951 1.8 V Out LDO USB1.1+... -
Page 7: Evm Interface
The LDC1101EVM is powered via the USB connection on J1. Use a micro-USB to USB-A cable to connect the EVM to a PC. The LDC1101EVM draws its supply current from the USB port. Do not use a passive USB hub with the EVM. -
Page 8: Default Inductive Sensor Section
@ 3 MHz (no target) 10.3 kΩ Q@ 3 MHz Approx. CPARASITIC 3 pF 33 MHz 9.0 10.0 Frequency (MHz) Figure 2-6. LDC1101EVM Default Sensor Resistance Variation EVM Features and Connections SNOU137 – May 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... -
Page 9: Sensor Configuration Options
- is included for such a situation. This is left unpopulated by default, SENSOR2 with the footprint located on the bottom of the PCB. SNOU137 – May 2015 EVM Features and Connections Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... -
Page 10: Remote Sensor With Twisted Pair Connection
Figure 2-9. Remote Sensor with Twisted Pair Connection Break-Away MSP430 Section The MSP430 section of the LDC1101EVM can be broken along the indicated line to separate the MSP430 from the LDC1101 IC. A 7 position 100mil spacing connector can be used for connecting the LDC1101 to the MSP430, or another MCU if necessary. -
Page 11: Ldc1101Evm Pc Software (Gui)
SNOU137 – May 2015 LDC1101EVM PC Software (GUI) The LDC1101EVM uses PC-based application software for device configuration and to retrieve conversion results. The LDC1101 EVM software can be used to evaluate the performance and functionality of the LDC1101 in a simple and flexible GUI configuration. The controls provided correspond to various register fields of the LDC1101 or EVM features (e.g. -
Page 12: Software Installation
A shortcut to the application will be available in the Start Menu and on the Desktop. After installation, connect the LDC1101EVM to the computer with a micro-USB cable. The PC will install the communication driver the first time the board is connected to the PC. -
Page 13: Software Launch
After the GUI starts, plug in the EVM to an available USB port. Connecting the GUI to the EVM The LDC1101GUI uses a virtual COM port to communicate with the LDC1101EVM through USB. At the top of the GUI, use the pull-down menu to select the appropriate COM port for communication with the EVM. -
Page 14: Evm Com Port
On systems which have a large number of installed COM ports, it may not be obvious which COM port is assigned to the EVM. To determine the correct COM port, open the Windows Device Manager and find the COM port named “EVM” under Ports (COM & LPT). In the example below, the LDC1101EVM can be seen on port 89. -
Page 15: Software Operation
Register Configuration Page – this provides direct reading and writing of LDC1101 registers • About Page – provides information on the GUI Software and information on an attached LDC1101EVM SNOU137 – May 2015 LDC1101EVM PC Software (GUI) Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... -
Page 16: Active/Sleep Mode
The default sensor comes with a sensor capacitance of 390pF; if the sensor capacitance is physically changed then modify the Sensor Capacitor control setting to match the new capacitor value. Figure 3-10. Sensor Configuration with changed Sensor Capacitor LDC1101EVM PC Software (GUI) SNOU137 – May 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... -
Page 17: Rp+L Page
The Streaming section displays the conversion results on two graphs. The left graph is the R Data graph and the right graph contains the Inductance graph. Figure 3-11. LDC1101EVM Control Software: RP+L Page Streaming Refer to Section 3.12 for information on the features and usage of the graphing areas. - Page 18 Wait until POR_READ = 0 before changing any device configuration. b0: Device is not in reset. b1: Device is currently in reset; wait until POR_READ = 0. LDC1101EVM PC Software (GUI) SNOU137 – May 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
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Page 19: Rp+L Page Measurement Configuration
The page will change and appear as below. Press the “Go to Streaming” button to return to the Streaming view. Figure 3-13. RP+L Page Measurement Configuration SNOU137 – May 2015 LDC1101EVM PC Software (GUI) Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... - Page 20 This control configures the INTB functionality; this INTB2SDO feature is not used as the LDC1101 FW periodically polls the conversion results. Single Conversion Sample Returns a single conversion result LDC1101EVM PC Software (GUI) SNOU137 – May 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
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Page 21: Lhr Page
Status section, where Green indicates the condition was not reported (the corresponding bit = 0). SNOU137 – May 2015 LDC1101EVM PC Software (GUI) Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... -
Page 22: Ldc1101Evm Lhr Configuration
A Conversion Over-flow error has occurred. LHR_DRDY b0: No unread conversion data is available. b1: Unread conversion data is available. Figure 3-16. LDC1101EVM LHR Configuration LDC1101EVM PC Software (GUI) SNOU137 – May 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... - Page 23 Not divided SENSOR_DIV SENSOR REFERENCE This control is included only to provide comprehensive configuration control, as the LDC1101EVM Reference frequency of 12MHz is greater than the maximum sensor frequency of 10MHz. Reference Frequency Source Used to bring LDC1101 out of shutdown.
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Page 24: Datalogging Conversion Results
3.10 Datalogging Conversion Results The LDC1101EVM GUI can save conversion results to a file for later evaluation with other applications. To start saving data, simply check the “Enable Data Log” check box – a window will pop-up asking for the location to save the file. -
Page 25: Plot Display Controls And Options
Setting these parameters are necessary for optimal R measurements. The LDC1101EVM does not need to be connected to determine the appropriate settings for a sensor. Use of the Apps Calculator is simple: 1. Enter the C... -
Page 26: Direct Register Access Page
Once a setup is configured, if an LDC1101EVM is connected, press the Update Registers button to write the appropriate values to the LDC1101 registers. Figure 3-20. Apps Calculator to Configure R Measurements 3.14 Direct Register Access Page... -
Page 27: Ldc1101 Control Software: Register Map Page
LDC1101 with the new value. The LW column in the Register table for the selected register will update to reflect the new value written. SNOU137 – May 2015 LDC1101EVM PC Software (GUI) Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... -
Page 28: Evm Fw Protocol
The EVM communicates with the PC using a Com port interface running on USB. Interfacing the LDC1101EVM with PC based tools which can manage Com port communications is feasible. Setting a data rate of 115200 baud, 8 data bits, 1 stop bit with no parity and no flow control are recommended com port settings. - Page 29 Contents of Register 0x24 (L_DATA_MSB) Contents of Register 0x38 (LHR_DATA_LSB) Contents of Register 0x23 (L_DATA_LSB) 0x5A 0x5A Sample Index Sample Index 0x5A 0x5A 0x5A SNOU137 – May 2015 LDC1101EVM PC Software (GUI) Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
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Page 30: Evm Design - Board Layout
Mid-layer 2 Signals and section transition routing Bottom MSP430 Power and optional components Figure 4-1. Top Layer Routing Figure 4-2. Mid-Layer 1 Routing EVM Design - Board Layout SNOU137 – May 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... -
Page 31: Evm Design - Schematic
Figure 4-3. Mid-Layer 2 Routing Figure 4-4. Bottom Layer Routing Chapter 5 SNOU137 – May 2015 EVM Design - Schematic SNOU137 – May 2015 EVM Design - Schematic Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... -
Page 32: Ldc1101, Sensor, And Level Shifter Schematic
EVM FW Protocol www.ti.com Figure 5-1. LDC1101, Sensor, and Level Shifter Schematic EVM Design - Schematic SNOU137 – May 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... -
Page 33: Power Conditioning Schematic
EVM FW Protocol www.ti.com Figure 5-2. Power Conditioning Schematic SNOU137 – May 2015 EVM Design - Schematic Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... -
Page 34: Mcu Schematic
EVM FW Protocol www.ti.com Figure 5-3. MCU Schematic EVM Design - Schematic SNOU137 – May 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... -
Page 35: Usb Connection Schematic
EVM FW Protocol www.ti.com Figure 5-4. USB Connection Schematic SNOU137 – May 2015 EVM Design - Schematic Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... -
Page 36: Evm Bill Of Materials
Test Point, Miniature, Black, TH LDC1101DRC Texas Instruments 1.8V High Resolution Inductance to Digital Converter, DRC0010J MSP430F5528IRGC Texas Instruments Mixed Signal MicroController, RGC0064B EVM Bill of Materials SNOU137 – May 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... - Page 37 Regulator, 5-pin SC-70, Pb-Free SN74AVCH4T245RSVR Texas Instruments 4-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs, RSV0016A ABM8-24.000MHZ-B2-T Abracon Corportation Crystal, 24.000MHz, 18pF, SMD SNOU137 – May 2015 EVM Bill of Materials Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
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Page 38: Revision History
Revision History www.ti.com Revision History DATE REVISION NOTES May 2015 Initial release. Revision History SNOU137 – May 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated... - Page 39 STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, or documentation (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms and conditions set forth herein. Acceptance of the EVM is expressly subject to the following terms and conditions.
- Page 40 FCC Interference Statement for Class B EVM devices NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
- Page 41 【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの 措置を取っていただく必要がありますのでご注意ください。 1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用 いただく。 2. 実験局の免許を取得後ご使用いただく。 3. 技術基準適合証明を取得後ご使用いただく。 なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。 上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ ンスツルメンツ株式会社 東京都新宿区西新宿６丁目２４番１号 西新宿三井ビル 3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page 電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧くださ い。http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page SPACER EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS.
- Page 42 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2015, Texas Instruments Incorporated...
- Page 43 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue.
- Page 44 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments LDC1101EVM...
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