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BUF08832EVM User Guide and Software Tutorial
This user's guide describes the characteristics, operation, and use of the BUF08832EVM evaluation
board. It discusses how to set up and configure the software and hardware, and reviews various aspects
of the program operation. Throughout this document, the terms evaluation board, evaluation module, and
EVM are synonymous with the BUF08832EVM. This user's guide also includes information regarding
operating procedures and input/output connections, an electrical schematic, and a parts list for the EVM.
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PowerPAD is a trademark of Texas Instruments.
Microsoft, Windows are registered trademarks of Microsoft Corporation.
I2C is a trademark of NXP Semiconductors.
WinZIP is a registered trademark of WinZIP International, LLC.
All other trademarks are the property of their respective owners.
SBOU081 - November 2009
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Copyright © 2009, Texas Instruments Incorporated
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BUF08832EVM User Guide and Software Tutorial
User's Guide
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Summary of Contents for Texas Instruments BUF08832EVM
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Page 1: Table Of Contents
SBOU081 – November 2009 BUF08832EVM User Guide and Software Tutorial This user's guide describes the characteristics, operation, and use of the BUF08832EVM evaluation board. It discusses how to set up and configure the software and hardware, and reviews various aspects of the program operation. - Page 2 Signal Definition of J1 (25-Pin Male DSUB) on BUF08832_Test_Board ................BUF08832_Test_Board Jumper Functions ................. USB_DIG_Platform Jumper Functions ................BUF08832_Test_Board Bill of Materials BUF08832EVM User Guide and Software Tutorial SBOU081 – November 2009 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated...
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Page 3: Overview
TFT-LCD reference drivers. The BUF08832EVM is a platform for evaluating the performance of the BUF08832 under various signal, reference, and supply conditions. This document gives a general overview of the BUF08832EVM, and provides a general description of the features and functions to be considered while using this evaluation module. BUF08832EVM Kit Contents Figure 1 illustrates the hardware included with the BUF08832EVM kit. -
Page 4: Buf08832Evm Hardware Setup
The following documents provide information regarding Texas Instruments' integrated circuits used in the assembly of the BUF08832EVM. This user's guide is available from the TI web site under literature number SBOU081. Any letter appended to the literature number corresponds to the document revision that is current at the time of the writing of this document. -
Page 5: Buf08832_Test_Board Block Diagram
Male DSUB Signals from USB Dig Platform Output Channels Interface BUF08832 I C A0 Address Jumper Figure 3. BUF08832_Test_Board Block Diagram SBOU081 – November 2009 BUF08832EVM User Guide and Software Tutorial Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated... - Page 6 No connection No connection Common or ground connection for power. SPI_SCK No connection SPI_CS1 No connection SPI_DOUT No connection SPI_DIN1 No connection BUF08832EVM User Guide and Software Tutorial SBOU081 – November 2009 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated...
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Page 7: Usb_Dig_Platform Theory Of Operation
Figure 4 shows the block diagram for the USB DIG Platform. This platform is a general-purpose data acquisition system that is used on several different Texas Instruments evaluation modules. The details of its operation are included in a separate document, SBOU058 (available for download at www.ti.com). -
Page 8: Buf08832Evm Hardware Overview
ESD workstation. Typical Hardware Connections To set up the BUF08832EVM hardware, connect the two PCBs of the EVM together, and apply a power source to the BUF08832 Test Board. The external connections may be the real-world system that the BUF08832 will be incorporated into. -
Page 9: Connecting Power To The Evm
BUF08832EVM Hardware Overview www.ti.com Connecting the Hardware To connect the two PCBs of the BUF08832EVM together, gently push on both sides of the DSUB connectors (as shown in Figure 6). Make sure that the two connectors are completely pushed together;... -
Page 10: Connecting The Usb Cable
BUF08832EVM Hardware Overview www.ti.com Connecting the USB Cable to the BUF08832EVM Figure 7 shows the typical response to connecting the USB DIG Platform board to a PC USB port for the first time. Note that the EVM must be powered on before connecting the USB cable. Typically, the computer will respond with a Found New Hardware, USB Device pop-up dialog. -
Page 11: Buf08832Evm Default Jumper Settings
BUF08832EVM Default Jumper Settings Figure 8 shows the default jumpers configuration for the BUF08832EVM. In general, the jumper settings of the USB DIG Platform will not need to be changed. You may want to change some of the jumpers on the BUF08832_Test_Board to match your specific configuration. - Page 12 I C data line. The default INT position connects the SDA pin to the C_SDA_ISO control signal. BUF08832EVM User Guide and Software Tutorial SBOU081 – November 2009 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated...
- Page 13 Connects the pull-up on GPIO to the V supply or JUMP18 the V supply. CAUTION: Adjusting outside of this range will damage the EVM. SBOU081 – November 2009 BUF08832EVM User Guide and Software Tutorial Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated...
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Page 14: Bksel Switch
Jumper JMP2 determines how the OTP memory bank selection is controlled. There are two settings JMP2 can be set to. Position INT specifies that control of the BKSEL pin is handled on the BUF08832EVM. For this jumper setting, the BKSEL switch controls whether Bank 0 or Bank 1 OTP is selected. -
Page 15: Buf08832Evm Software Setup
United States and European regional settings. The software should also function on other Windows operating systems. BUF08832EVM Software Installation The BUF08832EVM software is included on the CD that is shipped with the EVM kit. It is also available through the BUF08832EVM product folder on the TI web site. -
Page 16: Buf08832Evm Software Installation
Figure 10. BUF08832EVM Software Installation The BUF08832 software installer file then opens to begin the installation process, as Figure 11 shows. Figure 11. BUF08832EVM Software Install Window BUF08832EVM User Guide and Software Tutorial SBOU081 – November 2009 Submit Documentation Feedback... -
Page 17: Buf08832Evm Software Overview
Software Description and Set-Up The BUF08832EVM software allows the user to read and write to all registers in the BUF08832 gamma correction buffer. Furthermore, it allows programming of the OTP register on the BUF08832. The software also permits the user to select either I C address. -
Page 18: Buf08832Evm Software Functioning Properly
Starting the BUF08832EVM Software The BUF08832 software can be operated through the Windows Start menu. From Start, select All Programs; then select the BUF08832EVM program. Figure 13 shows how the software should appear if the EVM is functioning properly. -
Page 19: Buf08832Evm Software: No Communication With The Usb_Dig_Platform
USB cable, the computer recognizes the device. If the sound is on, you will hear the distinctive sound that you expect when a USB device is properly connected to the PC. Figure 14. BUF08832EVM Software: No Communication with the USB_DIG_Platform SBOU081 – November 2009... -
Page 20: Buf08832_Test_Board Jumper Jmp1 Set For Logic '1
Figure 15 shows how the hardware and software must both be set to allow for communication between the BUF08832EVM and the software. Without jumper JMP1 and the software address button configured correctly, the software will not be able to communicate with the BUF08832 device. -
Page 21: Measuring And Entering Power-Supply Voltage
Equation 1. Code_in_Decimal ´ DAC_CHANNEL 1024 Example 1. Channel 6: Code 44 (hexadecimal) = 68 (decimal) ´ = 0.996V DAC_CHANNEL 1024 SBOU081 – November 2009 BUF08832EVM User Guide and Software Tutorial Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated... -
Page 22: Auto Write Feature Enabled
The first method allows for the output voltage to change immediately after the writing to the DAC register. In the BUF08832EVM software, this mode is configured by enabling the Auto Write feature found in the Buffer Menu dropdown menu. In this mode, as an individual channel is written to, the output voltage changes as soon as the user moves to a different text box in the software. -
Page 23: Save To File Dialog Box Button And Window
5.2.5 Reset Button Pressing the Reset button in the BUF08832EVM software calls a General-Call Reset for the BUF08832. The status of the DAC/V registers after the General-Call Reset depends on whether the OTP has been programmed or not. If the OTP has been programmed, the channel registers will be loaded with the most recent values programmed into the OTP memory. -
Page 24: File Format Of Saved Data
Figure 20. File Format of Saved Data 5.2.7 Load From File Button The BUF08832EVM software is also able to load data saved from previous evaluations. A saved register configuration can be loaded into the BUF08832 using the Load From File button, as shown in Figure The program remembers where you saved the last register configuration. -
Page 25: Run Batch Dialog Button And Window
Once a series of filenames have been selected, the check box turns dark. Double-click on a filename again to unselect it from the batch run. Figure 22. Run Batch Dialog Button and Window SBOU081 – November 2009 BUF08832EVM User Guide and Software Tutorial Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated... -
Page 26: Control Panel Button And Window
23. Simply drag the slider to adjust the desired channel output. The DAC code and corresponding output value of each channel change automatically. This function is similar to the slider present on the primary BUF08832EVM software window that changes based on the channel that highlighted (as discussed in the above section). -
Page 27: Program Otp All Channels Button
The values are stored in the memory bank that is selected via the BKSEL switch (see Section 3.7.2). Figure 24. Program OTP All Channels Button SBOU081 – November 2009 BUF08832EVM User Guide and Software Tutorial Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated... -
Page 28: Buf08832Evm Documentation
This section contains the complete bill of materials and schematic diagram for the BUF08832_Test_Board. Documentation information for the USB_DIG_Platform can be found in the USB_DIG_Platform User’s Guide, SBOU058, available at the TI web site at http://www.ti.com. BUF08832EVM User Guide and Software Tutorial SBOU081 – November 2009 Submit Documentation Feedback... - Page 29 BUF08832EVM Documentation www.ti.com BUF08832_Test_Board Schematic Figure 26 shows the schematic for the BUF08832_Test_Board. Figure 26. BUF08832_Test_Board Schematic SBOU081 – November 2009 BUF08832EVM User Guide and Software Tutorial Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated...
- Page 30 TSW-132-07-G-S size GOLD SHUNT LP W/HANDLE 2 POS AMP/Tyco Electronics 881545-2 30AU IC CURR/PWR MON BI-DIR BUF08832 Texas Instruments BUF08832AIDGS MSOP-10 BUF08832EVM User Guide and Software Tutorial SBOU081 – November 2009 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated...
- Page 31 Evaluation Board/Kit Important Notice Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
- Page 32 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
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