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Table of Contents
Summary of Contents for Microsemi LX3301A
- Page 1 LX3301A/LX3302A Auto Calibration User Guide Preliminary May 2018...
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Page 2: Table Of Contents
4.5 Auto Calibration of Phase ......................... 16 4.6 Save Calibrated Result into EEPROM ....................17 5 Data Capture Using IPCE with Microsemi Bench Control System (BCS) ........19 5.1 Alternative Way to Take Data Using Dongle Programmer ............... 19 5.2 Collect Measurements with Default Parameters ................19 5.3 Save EEPROM Data to File ........................ -
Page 3: Revision History
The revision history describes the changes that were implemented in the document. The changes are listed by revision, starting with the most current publication. Revision 1.0 Revision 1.0 was published in May 2018. It was the first publication of this document. Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0... -
Page 4: Software Installation And Validation
Software Installation and Validation The following section describes how to install and validate the software for the LX3301A/LX3302A device. 1. Connect the dongle to the computer. 2. Connect the sensor PCB to the dongle. 3. Place your target at a desired air gap. - Page 5 Note: If it cannot recognize the dongle, then install the driver provided using device manager, then unplug and replug the USB cable. 7. Read EEPROM from the chip (choose AOUT 11 for LX3301A or IO3 11 for LX3302A), as shown. Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0...
- Page 6 7. Read EEPROM from the chip (choose AOUT 11 for LX3301A or IO3 11 for LX3302A), as shown. Figure 4 • Read EEPROM from Chip If the result is the same as default parameters or previously programmed ones, then communication has been done correctly.
- Page 7 The following image shows an example of IC unpowered (VIN). VIN is not connected. Data is garbled. Figure 7 • Example of IC Unpowered 8. Use the default EEPROM data and write this default EEPROM data to the chip, as shown in the Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0...
- Page 8 8. Use the default EEPROM data and write this default EEPROM data to the chip, as shown in the following image. Figure 8 • Write Default EEPROM Data to Chip Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0...
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Page 9: Data Preparation For Ipce
The following list describes data preparation using the Excel data template. Position value must be arranged lowest to highest value (no negative slope). SP_AOUT—Must be a low setting value. EP_AOUT—Must be a high setting value. Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0... - Page 10 SP PWMDuty—Start point PWM duty (for example, 0.9). See the green arrow. EP PWMDuty—End point PWM duty (for example, 0.1). See the purple arrow. VIN—N/A. PWM_Tolerance (duty)—Allowable tolerance for auto calibration. Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0...
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Page 11: Lx3301A/Lx3302A Eeprom Setting For Data Capture
The following steps prepare to manually capture the data using the LX3302A. 1. Configure IO2 as SENT and IO3 as DAC and enable debug by choosing ADC1, as shown. Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0... - Page 12 Move the target to the next position and repeat this step until all desired data is captured. 4. Press the Save Datalog button if data is captured by IPCE. Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0...
- Page 13 After completing a run with default parameter, save all the data in one of the templates shown previously; or, if you have taken this data through the dongle, you can simply press Save Datalog Figure 18 • Save DataLog Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0...
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Page 14: Data Validation
In Excel, plot and check that the curve is not intermittent and does not have drops. The following is an example of invalid data. Figure 19 • Invalid Data Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0... -
Page 15: Calibration Using Ipce
Figure 22 • Load EEProm Data From File 4. Select eeprom data stored or click Read eeprom from chip . Finally, data and EEPROM parameters are loaded into IPCE to do autocal and simulation. Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0... -
Page 16: Example Data And Eeprom Parameters Loaded
IF ANALOG (DAC) output is used, measure VIN from the sensor board connector. Analog Tol= the Autocal system will calibrate up to this accuracy. Figure 24 • Calibration Condition Setting Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0... -
Page 17: Auto Calibration
Calibration is complete. The result is shown in Simulated Tolerance. The following image shows auto calibration of phase and gain. Figure 26 • Auto Calibration of Phase and Gain Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0... -
Page 18: Auto Calibration Of Phase
Figure 28 • Manual Calibration Environment 6. Check the box for SIM_OUT_ERROR to get the MaxErr number that IPCE can achieve. Select Zoom Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0... -
Page 19: Save Calibrated Result Into Eeprom
Figure 30 • Uncheck Boxes 3. For IO1, IO2, and IO3 Mode, select 0 =Normal , as shown. Figure 31 • Normal Mode 4. For DEBUG, select 00000=Disabled , as shown. Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0... - Page 20 (for example, SN_01_Final_eeprom). Recapture the data with calibrated EEPROM parameters and verify the result. Repeat the previous steps, skipping auto calibration. If the result is acceptable, then the process is complete. Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0...
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Page 21: Data Capture Using Ipce With Microsemi Bench Control System (Bcs)
Data Capture Using IPCE with Microsemi Bench Control System (BCS) The following section describes how to use the Microsemi bench control system (BCS) to capture data. Alternative Way to Take Data Using Dongle Programmer The following instructions enable the programmer dongle to take measurements. - Page 22 Figure 35 • Calibration Condition Setting The following image shows an example datafile with a negative slope. Figure 36 • Example Datafile with Negative Slope The following image show an example of post autocal. Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0...
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Page 23: Save Eeprom Data To File
Save the current EEPROM parameters. You can do this by simply clicking Save EEProm Data to File , as shown in the following image. Name this Default eeprom parameters Figure 38 • Save EEProm Data to File Microsemi Proprietary and Confidential. LX3301A/LX3302A Auto Calibration User Guide Revision 1.0... - Page 24 Microsemi. It is the Buyer's responsibility to independently determine suitability of any products and to test and verify the same. The information provided by Microsemi hereunder is provided "as is, where is" and with all faults, and the Microsemi Corporate Headquarters entire risk associated with such information is entirely with the Buyer.
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