Texas Instruments DAC121S101EVM Manuale utente
DAC121S101EVM Booster Pack User’s Guide
User's Guide
Literature Number: SNAU169
August 2014
Contents
1 DAC121S101 BoosterPack Components ................................................................................. 4
2 Software Installation............................................................................................................. 5
2.1 Graphical User Interface (GUI)............................................................................................. 5
2.2 LaunchPad Firmware Upgrade ............................................................................................ 6
2.3 Update USB Driver .......................................................................................................... 7
3 DAC121S101 BoosterPack Setup and Operation...................................................................... 8
3.1 Connections .................................................................................................................. 8
3.2 Launching the Software..................................................................................................... 9
4 Board Layout..................................................................................................................... 10
5 Schematic ......................................................................................................................... 15
6 Bill of Materials .................................................................................................................. 16
2Contents SNAU169–August 2014
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List of Figures
1-1. DAC121S101EVM Evaluation Board...................................................................................... 4
2-1. DAC12xSxxx Installation Directory........................................................................................ 5
2-2. USB Firmware Upgrade Window .......................................................................................... 6
2-3. Driver Not Installed .......................................................................................................... 7
3-1. DAC121S101EVM Attached to MSP430 ................................................................................. 8
3-2. Part Select.................................................................................................................... 9
4-1. Top Assembly Layer....................................................................................................... 10
4-2. Top Layer Routing ......................................................................................................... 11
4-3. Power Layer Routing ...................................................................................................... 12
4-4. Ground Layer Routing ..................................................................................................... 13
4-5. Bottom Layer Routing...................................................................................................... 14
5-1. DAC121S101EVM Schematic............................................................................................ 15
List of Tables
1-1. Device and Package Configurations ...................................................................................... 4
6-1. DAC121S101 Bill of Materials............................................................................................ 16
3
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Chapter 1
SNAU169–August 2014
DAC121S101 BoosterPack Components
Figure 1-1. DAC121S101EVM Evaluation Board
Table 1-1. Device and Package Configurations
DEVICE IC PACKAGE
U1 LM4120IM5-4.1 SOT-23
U2 DAC128S085CIMK SOT-6
4DAC121S101 BoosterPack Components SNAU169–August 2014
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Chapter 2
SNAU169–August 2014
Software Installation
2.1 Graphical User Interface (GUI)
To use the DAC121S101EVM install the DAC12xSxxx Software:
1. The DAC12xSxxx software is located http://www.ti.com/product/dac121s101, scroll down to the
“software” section, and download the latest evaluation software.
2. Unzip the downloaded file into a known directory, and run the “setup.exe” file located in [Unzip
location]\ DAC12xSxxx \EVM_GUI\ DAC12xSxxx _Installer_v1.zip\ DAC12xSxxx
_Installer\Installer\Volume. Follow the pop-screen instructions by clicking the “Next” button to install the
software.
Figure 2-1. DAC12xSxxx Installation Directory
3. When the installation is finished, please click “Finish” button.
5
SNAU169–August 2014 Software Installation
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LaunchPad Firmware Upgrade
www.ti.com
2.2 LaunchPad Firmware Upgrade
The MSP430F5529 LaunchPad board can purchased at http://www.ti.com/tool/msp-exp430f5529lp.
MSP430 Firmware Upgrade Application Installation
1. Navigate tohttp://www.ti.com/tool/msp430usbdevpack and click on Get Software.
2. Scroll-down to the end of the page to find the USB Collateral Installers section.
3. Click on MSP430_USB_Firmware_Upgrade_Example-x-x-x-Setup.exe to download the tool; the page
will redirect to a submission form.
4. Complete the information requested and submit the form; if approved, a download button will appear.
5. Run the installation file and follow the on-screen instructions until completion. When asked about the
setup type, select Application Only. Click Finish when done.
SPACE
Firmware upgrade
1. Open the MSP430 USB Firmware Upgrade application. By default, the application can be launched
from Start >> Programs >> Texas Instruments >> MSP430 USB Firmware Upgrade Example.
2. Click Next to proceed on the first prompt; read and accept the license agreement and click Next to
continue.
Figure 2-2. USB Firmware Upgrade Window
3. Enable the Select Firmware button and browse to the downloaded firmware “dac12xsxxx_fw-v0.87.txt”.
4. Press the BSL button on the MSP430 LaunchPad and connect to the PC with a USB cable; if detected,
the text on the Firmware Upgrade tool will change from “No device connected” to “Found 1 device”.
5. Click on the Upgrade Firmware button to program the LaunchPad. Close the application when done.
6Software Installation SNAU169–August 2014
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Update USB Driver
2.3 Update USB Driver
1. Before launching the DAC12xSxxx software, connect the DAC121S101EVM board to a USB port of
your PC. Go to Device Manager and find “MSP43-USB Example”. Right click and select Update Driver
Software.
Figure 2-3. Driver Not Installed
2. On the next screen, select the “Browse my computer for driver software” option and go to the directory
of your install files and select the “TI_ADC_DAC_EVMs_Driver.inf” file.
3. If prompted with a warning window select “Install this Driver Anyway”. Close the installation window
when it is done. The device manager should now display a “TI_ADC_DAC_EVMs” item followed by a
COM port number.
7
SNAU169–August 2014 Software Installation
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Chapter 3
SNAU169–August 2014
DAC121S101 BoosterPack Setup and Operation
3.1 Connections
1. Attach the DAC121S101EVM BoosterPack onto the MSP430F5529 LaunchPad using connectors JA,
JB, JC, JD. The proper orientation of the LaunchPad and DAC121S101EVM is when the text
“LaunchPad” and “2013 TI” are in the same direction.
Figure 3-1. DAC121S101EVM Attached to MSP430
2. Connect the USB cable from the LaunchPad to the PC.
8DAC121S101 BoosterPack Setup and Operation SNAU169–August 2014
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Launching the Software
3.2 Launching the Software
1. The DAC12xSxxx GUI software can be run by clicking on Start >> All Program >> DAC12xSxxx. After
running the GUI select DAC121S101.
Figure 3-2. Part Select
2. GUI Descriptions
• DB[15:12]: These 4 bits control different operational and power down modes. Bits 14 and 15 are
don’t care bits. See the DAC121S101 datasheet for more details.
• DB[11:0]: These 12 bits are for setting the DAC output codes.
• DB[11:0] Output Type: This field changes DB[11:0] to either binary, decimal, or hexadecimal type.
3. Quick start:
(a) Input “0000” to DB[15:12] to go into normal operation mode
(b) Input “800” to DB[11:0] to output 2.048V (Vref/2)
(c) Click “Write” to send the command to the DAC121S101 part
9
SNAU169–August 2014 DAC121S101 BoosterPack Setup and Operation
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