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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Interfacing the TLV2544 A/D to C5509 DSP
Tlv2544 can I do this? Brian Tlv2544 Sound Consulting. The sample rate is probably easiest to set using one of the Timer resources on the C I would suggest that if possible you use a newer multichannel ADC device, otherwise it’s not likely that online Hlv2544 guys and other Tlv2544 developers can give you much support.
Many serial Tlv2544 chips start the acquisition of a sample on tlv2544 specific event, such as the 4th bit of the serial command word, or tlv2544 the falling edge of the chip select signal. The problem is phase. Thanks — Seyed Mehdi Hosseini. Your question is more a question of how to use the TLV than the C These are good ylv2544.
TLV from Texas Instruments
The DSP will read tlv2544 chip at a time, and as a result only one chip will be sampling at a time, tlv2544 thus none of tvl2544 will sample simultaneously. You can check the bus tlv2544 timing diagram in the data sheet to verify the following: The PCM diagram implies that left and right are sampled synchronously, but the tlv2544 sheet does not mention how to precisely control the timing of the sample acquisition.
In this particular case, with one tlv2544 port sharing two or three Tlv2544 chips, it’s most likely that they will NOT sample simultaneously unless you design very elaborate circuitry. You would probably be better off signing up for tlv2544 Texas Instruments Engineer to Engineer forum at http: The device must specifically support a “multichannel” or “chain” mode of some type. In all likelihood, you tlv2544 be forced tlv2544 use polling instead of DMA.
If you go to the Texas Instruments web site and download tlv2544 specifications for the TLV, you’ll see that it has the ability to automatically sweep through either 2 or 4 tlv2544, but not 3 channels. The master clock runs at a much higher rate than the sample clock, and thus there are many different points at which the chip can sample even if it shares a master tlv2544.
You mean that attaching multiple devices to the same serial port we can get simultaneous samples? In order to use DMA, you’ll probably have to read 4 channels and then skip over the data for tlv2544 4th tlv2544.
One thing I forgot to point out earlier tlv2544 that a microphone- based tlv2544 probably will not be susceptible to sample phase issues, because the time delays due to the distance between the mic and the sound source will vary and will far tlv2544 the sample latency. So tlv2544 means there are not ready-to-run software examples available for you tlv25444 use.
And if the data sheet doesn’t talk tlv2544 attaching multiple devices to the same serial port bus or “TDM bus”, then it’s not going to work anyway. Tlv2544 to datasheets we can use 3 TLVAIC12 in a tlv2544 for getting signals from 3 microphones, but there is some problem!
Tlv2544 in Sign in Remember me Forgot username or password? Previous 1 2 Next. I suggest that you carefully study the TLV specifications, then confirm that your tlv2544 circuit fully supports the tlv2544 modes in the way that you want to use them.
There is no detail in datasheet about tlv2544. In other words, this is most likely a non-issue. Unless the chip data sheet specifically talks about simultaneous sampling tl2544 by multiple devices then sampling tlv2544 alignment is likely to be an issue. This is the “repeat tlv2544 mode. On Sep 24,at I would guess that as long as all three 3 AIC12 or AIC12K devices receive the tlv2544 master clock oscillator input, then they will sample simultaneously.
These questions are not really related tlv2544 the C55x.
12-Bit 200 kSPS ADC Ser. Out, Auto Pwrdn (S/W and H/W), Low Power W/8 x FIFO W/4 Ch.
Specifically, this means a that in tlv2544 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 tlg2544 time period when its serial output Tx line Rx for the DSP is in tri-state or tlv2544 impedance, so it won’t conflict with the other devices If so, then it’s probably tlv2544 to work the way you want.
Tlv2544 either of those cases, which correspond to chips I have designed with, the sample time for each chip will be different because the communication timing is different. I want tlv2544 get samples on each microphone in the same time, Tlv2544 mean the tvl2544 sampling. These devices specially designed for audio task. If you hardware does not have these signals connected properly, then you cannot use DMA.
In fact, that may tlv2544 why the data sheets do not even mention the timing of the sample process. I want to read each tlv2544 periodically and whit specific sampling tlv2544. On Sep 14,at