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Q&A from Analog Devices EngineerZone: SigmaDSP/SigmaStudio and DSP discussions (100 topics).
100 topics · 445 messages
Filtered by: ADAU1772 ✕
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SigmaStudio move to 192KHz from 48KHz
I've been asked to reconfigure our dev board to 192KHz from 48KHz. So I decided to start with the eval board first. I asked AI for some help with this but it gave most of the registers different names
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adau1777 crack noise with dac_sdata fixed value
Hi, ADI I'm using the adau1777 to do the noise cancelling project. Now, we are blocked by a carak noise problem from one of the speaker with a fixed dac_sdata value. In my schematic design, two pieces
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ADAU1772 IC 2-WinE2PromLoader Creates 16KB File
The WinE2PromLoader tool does not auto-configure itself to the EEPROM you are using or the necessary minimum file size. The appropriate filesize is 4KB. I can go into the register control section, con
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Regarding the memory of the ADAU1772, ADAU1777, and ADAU1787
Hi ADI, I would like to know the memory size of the ADAU1772, ADAU1777, and ADAU1787, or how many Gen filters can be written into the IC from SigmaStudio. Currently, I can write 80 Gen filters into th
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APx-555 ADC_SDATA0 to ADAU1772Z eval bd DAC_SDATA, eval bd ADC_SDATA0 to APx-555 RCV port DAC_SDATA?
I thought to try testing the ADAU1772 eval board with the APX-555 running serial data transmit to the bd, and then feed the serial output back to the APx555. It works in loopback but when I disable lo
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ADAU1772Z selfboot questions
Hi, I'm back working with the ADAU1772 eval board along with our Audio Precision APx555 and I am finding some behaviors that I have questions about. 1) Say I play with the SigmaStudio registers and ge
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Regarding the behavior of the adau1772 evaluation board
Hello. I recently purchased and am using the adau1772 evaluation board. The power to the eval board is powered by USB. For the input signal, I input a signal with OFFSET=0V, AMPLITUDE=500mV to AIN0 of
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Audio Level Controller in ADAU1772
ADAU1761 has "Automatic Level Control" (ALC) that controls the analog audio level. I am bound to use ADAU1772 with Zynq-7030 Board for my application requirements. How can I Control the Audio Level in
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ADAU1772 Can only use 30 out of 32 Instructions
Hello, I created a basic Sigmastudio Project for ADAU1772. Using the config below I use 30 out of 32 Instructions. Expectation: I have space to add two additional filters to one PEQ block and compile
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ADAU1772 How to use analog input reference pins (AINxREF)
The ADAU1772 eval board schematic has AINxREF inputs tied to 10uF caps to ground. The datasheet, page 33, 2nd paragraph says these are biased at AVDD/2, and unused pins AC coupled to ground or tied to
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Expander on FDSP of 1787, SigmaStudio
SigmaStudio lists an expander for the 1787 FDSP, but I cannot find any documentation on how it operates. I am specifically interested in the expander with external detect. I have played with various i
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ADAU1772 functionality using external MCLK and i2S data
Here are use cases my manager asked about... We plan to run MCLK to all codecs (no local xtal or osc.) but it is undecided if it will be used - there is an unknown left that we need to understand. Is
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Multiple ADAU1772's and MCLK
You liked running the ADAU1772 as a slave off the APx55 MCLK. I actually saw worse S/N doing that, but anyway, what if I have multiple 1772's all driven off a MCLK sent by an FPGA. Is this better than
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ADAU1772 REGOUT and DVDD
Please discuss design options with REGOUT and DVDD and how they should be bypassed in each case. Its a little confusing. adau1772 Integrated/Special Purpose A/D Converters Audio CODECs
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SigmaStudio tool with ADAU1772
I am experiencing issues with SigmaStudio where when I am setting parameters in one tab of the IC 1 - ADAU1772 Register Control section it changes settings in others - specifically the Signal Routing
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ADAU1772 Output ASRC Source Select
Please explain the Output ASRC Source Select. I have been using the Core Out X selections but wonder about ADC X selections. They do not seem to have the same levels as the Core outputs. Are they basi
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ADAU1772 vs ADAU1777 vs ??
We have been evaluating the ADAU1772 for some time now and had the need to find a smaller package preferably just a dual DAC with adjustable output level. Boom I come across the ADAU1777, which seems
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PCM to PDM conversion
Hi, I bought an Evaluation board based out of ADAU1772. As it was mentioned in other blog that it can be used for converting PCM to PDM, my question is there is CLKOUT for PDM output stream. Is there
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Runnning ADAU1772 eval board as Slave off APX555 analyzer
I got the ADAU1772 and APX555 to play nice I guess with SNR results from 85-87dB depending on the day... (?) That was running with PLL circuitry enabled on the eval board and no MCLK sent from the APX
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Sigma Studio "Add" block creates issues on post filters
Hello, I am experiencing a problem when I try to implement a crossover network at the output of an ADAU 1772/1777 to use headphone output 0 as a tweeter and headphone output 1 as a woofer for dual dri
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SNR of ADAU1772 ADC
I measured analog in to analog out (ADC to DAC) and was getting ~82dB SNR. Should I expect better? Using the two files you guys sent me in the other thread, I tested the ADC to serial IO out as well a
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When to use PLL vs MCLK?
I do not understand how and when the PLL is used. Is it a choice between it and an external clock? If I am using the external clock provided by the APX555 analyzer do I disable the PLL? In a design, i
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COM pin use
Could you discuss the use of the COM pin in the ADAU1772. I see analog ref pins tied to it in some diagrams and tied to 10uF caps to ground in other diagrams. hardware adau1772 Integrated/Special Purp
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ADAU 1772 setting
Hi ADI, I tested a ADAU1772 EVAL board of ADC to I2S and I2S to DAC setting But got no signal when looped ADC_DATA0 to DAC_DATA What did I missing? Updated post to new Ask a Question form [edited by:
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EVAL-ADAU1772Z and BRD_/RESET (or BRD_RESET)
I am confused by the board reset signal used in the ADAU-1772Z and EVAL-ADUSB2EBZ. In the ADAU-1772Z it is labeled BRD_RESET at S7 near the Stereo Output Jack J23 and also the EN pin of U4 LDO. Looks