Part Number: AFE882H1EVM Tool/software: What are the field we need to enter to get DAC output voltage and HART output? Do we need to write in register page or entering into attached page is ok? EVM document is not clear about usage of Application,Can you provide more insights into it.
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Forum Post: AFE882H1EVM: EVM application usage
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Forum Post: AFE882H1EVM: How to enable DAC and HART using AFE88xH1EVM application
Part Number: AFE882H1EVM Tool/software: I'm experiencing issues enabling the DAC and HART functionality on the AFE882H1EVM board. I've attempted to enable these features through the software interface, but they remain non-operational. Could someone provide guidance on the correct procedure to enable the DAC and HART on this evaluation module? Are there specific hardware jumper settings, configuration registers, or software sequences that need to be followed beyond the basic software enable option?
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Forum Post: TPS62913: TPS62913 PFM ?
Part Number: TPS62913 Tool/software: Where does tps62913 belong among pfm, fccm, and ooa?
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Forum Post: RE: ADS1298: DRDY pin not going low although the other functions working well
hi Ryan, yea i still need help with that chip. My problem still there, the SPI transfer is just okay, but the DRDY pin not toggling when i send the START CMD
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Forum Post: ADC3444: Data Flow Integration between ADC3444 and DAC34SH84 via PS – Padding 14-bit to 16-bit & Reference Design Request
Part Number: ADC3444 Other Parts Discussed in Thread: DAC34SH84 Tool/software: Hello TI team, I am working on a custom design using the ADC3444 and DAC34SH84 , both connected through an FMC card to FPGA. My goal is to implement the following data flow: Acquire data from the ADC3444 and transmit it to the Processing System (PS) side. Store the captured ADC data temporarily in ps DDR. Later, retrieve the data from storage and send it to the DAC34SH84 . Since the ADC3444 outputs 14-bit samples and the DAC34SH84 expects 16-bit input , I need to pad the 14-bit ADC data to 16-bit before sending it to the DAC . I have a few questions: How can i transmit the data from the adc to PS side ?Could you please provide system-level block diagram for this setup? What is the recommended approach for padding the 14-bit ADC data to 16-bit? Should I pad with zeros in the LSBs or MSBs to maintain signal integrity and dynamic range? Are there any available reference designs (for either ADC3444 or DAC34SH84) that illustrate a complete data flow from ADC to DAC via the PS Is there any specific initialization/configuration sequence I should follow for synchronizing both devices when routing data through PS? Attached the adc3444 and dac34sh84 datasheet link below https://www.bing.com/ck/a?!&&p=0d75b39168e99c7426bab02dd6005943df71dab0a729adc929e3835dd82f0a7aJmltdHM9MTc0NDg0ODAwMA&ptn=3&ver=2&hsh=4&fclid=12c9b4d3-bc7a-675b-2bf1-a008bde1660c&psq=adc3444+datasheet&u=a1aHR0cHM6Ly93d3cudGkuY29tL2xpdC9ncG4vQURDMzQ0NA&ntb=1 https://www.bing.com/ck/a?!&&p=53602d48f4829bb0cda10256c49c27d52c8df6ea4daa7c96e07f310c91e17aa0JmltdHM9MTc0NDg0ODAwMA&ptn=3&ver=2&hsh=4&fclid=12c9b4d3-bc7a-675b-2bf1-a008bde1660c&psq=dac34sh84+datasheet&u=a1aHR0cHM6Ly93d3cudGkuY29tL3Byb2R1Y3QvREFDMzRTSDg0&ntb=1
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Forum Post: ADS7845: Touch screen driver delivers crappy values
Part Number: ADS7845 Tool/software: It is a 5-wire touch screen controller chip with a 12-bit ADC, interface over SPI For our application, we are trying to use it to read a certain 5-wire resistive touch screen. But for some reason, although we are trying to read the touch screen in single-ended mode, the values we read from the controller are garbage/random when someone touches the touch screen lightly. Garbage in this context means that it may deliver consistent values, which is bad because the microcontroller reading it might interpret that an honest touch is happening elsewhere on the touchscreen. And when someone does touch the touch screen with force, the range of values is severely truncated. Instead of a 0 to 4095 range, we see a 200 to 1400 range, which is a massive reduction. Is there a way to determine how hard someone is pressing down on the touchscreen from this driver? I wanted to know if maybe I was doing something wrong with the hardware design? What could cause this behavior? Is this a common problem?
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Forum Post: RE: DAC8565EVM: DAC CONNECTON ISSUE
Hi Katlynne Jones, Thank you for explaining everything in such a detailed manner — it was very helpful for me Regards, Amara Rakesh
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Forum Post: RE: ADS7845: Touch screen driver delivers crappy values
Although this is not the exact touchscreen I am using, this touchscreen is similar enough to the one I am connecting to the ADS7845 controller. AD-7.0-5RU-01-200
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Forum Post: RE: TSC2013-Q1: Single Touch Configuration
Hi Veer, Will look into further today
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Forum Post: DAC5687: whether the configuration of DAC5687 is feasible
Part Number: DAC5687 Tool/software: I would like to inquire whether it is feasible to use the PLL mode of DAC5687 with CLK1 differential 60M and output 140M intermediate frequency signal. How to configure the capacitors and resistors of LPF? Is it possible to use the default configuration on the datasheet?
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Forum Post: RE: AMC7908: Is there a datasheet for the AMC7904RGET?
Bruce, you'd have to work with your distributor or TI representative for that matter.
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Forum Post: RE: ADS1261: Responding with All Zeros Part 2
OK, I will see if I can drive CS low a little earlier than the clock start. There is no setting to my knowledge of a lead time in the SPI Bus registers but I think I can do that by trying manual slave select mode and selecting the slave then waiting for a delay before enabling the clock and then doing the transmit. That should work. You're right. If CS is high there is no chance it will respond. I do have some old plots though of no response while CS is low. I think that was for the RREG command. Based on all the testing we have done I'm coming around to the idea that there is most likely nothing wrong with the 1261 and I don't have the SPI Bus programmed correctly. However, if we could leave this thread open for another day or two I would like to post plots of the results of adjusting the CS lead time per your suggestion. I should have them by end of day today. Thanks! Everett
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Forum Post: RE: ADS127L11: Voltage reference changes are ignored when using the THS4551 FDA
Hi Keith, thanks for your reply, that makes sense. I found the problem, I embarrassingly thought that the feedback capacitors on the FP+/FP- pins of the THS4551 VQFN package were only needed for that specific package, so I did not use any for my schematic. However, you need this capacitor if you use filters before the FDA, otherwise you get the stability problems. By connecting a 33 pF capacitor (I had to change the value to match the 10k gain resistor) between each input and output of the FDA, the output is stable and the reference voltage change finally works. Thanks for all your help and input, all the best, David
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Forum Post: RE: ADS1298: DRDY pin not going low although the other functions working well
Thanks, Khoi. Can you please follow the suggestions in the FAQ page below and let me know the results? I would like to confirm that power supplies are measuring as expected and that the POR initialization sequence is being followed: [FAQ] ADS129x: How do I verify that my ADS129x device is still functional? - Data converters forum - Data converters - TI E2E support forums Also, would you mind providing the ADS1298 portion of your schematic so we can review the relevant connections? Regards, Ryan
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Forum Post: RE: ADS1261: Responding with All Zeros Part 2
Hi Everett, Understood Sometimes it is possible to use your SPI peripheral in 3-wire mode, then use a GPIO to control CS. Then you have more control over the CS pin timing. Not sure if this is an option on your controller, this is just a general observation Let me know if you make any progress -Bryan
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Forum Post: RE: ADS1261: Responding with All Zeros Part 2
My thoughts exactly. I already made plans with our hardware lead on the upcoming re-spin to give me pin control of CS, START, RESET. I'm implementing your idea in the SW now, will post diagrams later today or AM tomorrow. As always, thanks!. Everett
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Forum Post: TPL0501-100: About the GND reference on TPL0501-100
Part Number: TPL0501-100 Tool/software: Hi AE, Can HA/WA/LA be treated as an independent resistor and used with a different ground reference from the SPI front-end GND (i.e., the two GNDs are not connected)? Could you please explain what potential issues this might cause? Best Regards
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Forum Post: RE: ADS131M08: Drivers and support (Linux)
Thank you very much Dale; We'll go over all of this today, We have the GPIOs for DRDY and SYNC/RESET all mapped out, and the four SPI wires, so that is looking good. The DRDY interrupt handler seems to be required, so sorting that is next. Will get back if we have issues Clark
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Forum Post: ADS1291: Can the positive and negative electrodes of each channel be captured on two different battery powered devices and then be combined after in post processing software?
Part Number: ADS1291 Tool/software: This may be a confusion question. lets say i have two ADS1291 devices. they are localized to two different parts of the body ( left arm / right arm). is it psosible to obtain the raw signal from each and then (assuming you could synchronize them to a high degree of accuracy,) combine the signals through differential amplification after the fact, once digitized and processed by a computer. I notice when i use one electrode, the other electrode reports lead off and then i see zero activity on the data stream.
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Forum Post: RE: AFE882H1EVM: EVM application usage
Doudu In the GUI, it looks like the EVM isn't yet connected, in the upper right side of the window, there is a check for "Demo Mode". Start by unchecking Demo Mode to make sure the EVM is connected. To enter in DAC output values, you just enter a value (in hex) for DAC Data. This can be done on the page you showed at the upper left side, just under the word "DAC". Once entered, this should update the value to the DAC output. I would note that we just noticed a problem with drivers that needed to be installed for this EVM GUI (the AFE881H1 and AFE882H1). Go to this E2E post: https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1495440/afe882h1evm-afe882h1evm-supporting Hopefully this works for you. Let me know if you have problems. This EVM combines the AFE882H1 and an XTR305 so that you can convert the AFE's 0-2.5V output to either a current or voltage output, depending on the XTR setting. Joseph Wu
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