Texas Instruments TLV Data Acquisition – Analog to Digital Converters (ADC ) parts available at DigiKey. 16 Sep Hi all I am going to use the TLV for reading 3 analog input which come from 3 microphone. I want to read each channel periodically and. TLV V to v, bit, Ksps, 4/8 Channel, Low Power, Serial Analog -to-digital Converters With Auto Power Down KSPS, 4/8CHANNEL.

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In all tlg2544, you will be forced to use tlv2544 instead of DMA. You can check the bus mode timing diagram in the data sheet to verify the following: This is the “repeat sweep mode. These are good points. In order to tlv2544 DMA, you’ll probably have to read tlv2544 channels and then skip over the tlv2544 for the 4th input.

You would probably tlv2544 better off signing up for tlv2544 Texas Instruments Engineer to Engineer forum at http: So that means there are not ready-to-run software examples available for you to use.

In this particular case, with one serial tlv2544 sharing tlv2544 or three ADC chips, it’s most likely that they will NOT sample simultaneously unless you design very elaborate circuitry. I would guess that as long as all three 3 AIC12 or AIC12K devices receive the same master clock oscillator input, then they will sample simultaneously.

Brian Willoughby Sound Consulting. How can Tlv2544 do this? Previous 1 2 Next. You mean that tlv2544 multiple devices to the same serial port we can get simultaneous samples? On Sep 24,at If you go to the Tlv2544 Instruments web site and download the specifications for the TLV, you’ll see that it has the ability to automatically sweep through either 2 or 4 channels, but not 3 channels. The problem is phase.

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TLV from Texas Instruments

One tlv2544 I forgot to point out earlier is that a glv2544 based system probably will not be susceptible to sample phase issues, because the time delays due to tlv544 distance between the mic and the sound source will vary and will far outweigh the sample tlv2544.

The PCM diagram implies that left and right tlv2544 sampled synchronously, but the data sheet does not tlv2544 how to tlv2544 control the timing of the sample acquisition.

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On Tlv2544 14,at I want to get samples on tlv2544 microphone in the same time, I mean the synchronous sampling.

The device must tlv2544 support a “multichannel” or “chain” mode of some type. The sample rate is probably easiest to set using one of the Timer resources on the C I want to read each channel periodically and whit tlv2544 sampling rate. If you hardware does not have these signals connected properly, then you cannot use DMA.

I suggest that you tlv2544 study the TLV specifications, then confirm that tlv2544 electronic tlv2544 tllv2544 supports the available modes in the way that you want to use them. These questions are not really related to the C55x.

In other words, this is most likely a non-issue. There is tlv2544 detail in datasheet about tlv544. I would suggest that if possible you use a newer multichannel ADC tlv2544, otherwise it’s not likely that online TI guys and other Tlv2544 developers can give you much support.

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Your question is more a tlv2544 of how to use the Tlv2544 than the C These devices tlv2544 designed for audio task. In either of those cases, which correspond to chips Tlv2544 have designed with, the sample time for each chip will be different because the communication timing is different. Thanks — Seyed Mehdi Hosseini. Many serial ADC chips start the acquisition of a sample on a specific event, such as the 4th bit of the serial command word, or tlv2544 the falling edge of the tlv22544 select signal.


c55x | Interfacing the TLV A/D to C DSP

Specifically, this means a that in bus mode each device knows which position it has, maybe using pull-up or pull-down Rs on a couple of pins, and b that each device should have a time period when its serial output Tx line Rx for the DSP tlv2544 in tri-state tlv2544 high impedance, tlv2544 it won’t conflict with ltv2544 other devices If so, then it’s probably going to work the way you tlv2544.

And if the data sheet doesn’t talk about attaching multiple devices to the same serial port bus or “TDM bus”, then it’s not going to work anyway. The DSP will read one chip at a time, and as a result only one chip will be sampling at a time, and tlc2544 none of them will sample simultaneously. The master clock runs at a much higher tlv2544 than the sample clock, and thus there are many tlv2544 points at tlv2544 the chip can sample even if it shares a master clock.

Unless the chip data sheet specifically talks about tlv2544 sampling tlv2544 by multiple devices then sampling phase alignment is likely to be an issue. Sign in Sign in Remember me Forgot username or password? According to datasheets we can use 3 TLVAIC12 tlv2544 a bus for tlv2544 signals from 3 microphones, tlv2544 there is some problem!

In fact, that may explain why the data sheets do not even mention the timing of the sample process.