Audio forum - Recent Threads

TAC5142: common-mode sense connection

Marvn Arcangel — Wed, 12 Aug 2026 15:06:50 GMT

Part Number: TAC5142

Hi Experts,

I need help confirming the design below.

Im working on a project where I want to process FM radio audio digitally and mix it with other digital audio sources. To do this, I'm using an Si4703 (FM radio IC) and a TAC5142 (DAC). I want to use the plugged-in IEM/headphone cable as the RF antenna for the radio.

The TAC5142 uses a pseudo-differential output with an external common-mode sense. Normally, I would connect the common-mode sense directly to the GND sleeve of the headphone jack.

However, since I'm using the IEM cable as the RF antenna for the Si4703, I'm not sure how to properly make this connection.

I connect the OUT2M to the Headphone jack sleeve (CN1 pin 1) through a ferrite bead. The Si4703 FMIP pin is also connected to the ferrite bead. This should be correct right?

Thanks!

Marvin

TLV320AIC3110: TLV320AIC3110 - Current consumption for each rails

Ramakrishna Raja C — Wed, 12 Aug 2026 09:07:49 GMT

Part Number: TLV320AIC3110

Hi Team,

Kindly help to share Current consumption for each rails separately.

HPVDD
AVDD
DVDD
IOVDD
SPLVDD
SPRVDD

TLV320AIC3104: Circuit Design Review Request for TLV320AIC3104IRHBR

young chen Seo — Wed, 12 Aug 2026 02:52:22 GMT

Part Number: TLV320AIC3104

Dear TI Team,

I hope you are doing well.

We have designed a circuit using the TLV320AIC3104IRHBR to support speaker and microphone operation.

Could you please review the attached schematic and confirm whether there are any issues with the circuit design or any recommended modifications?

Please refer to the attached file for the detailed circuit information.

We would appreciate your feedback and recommendations.

Thank you for your support.

Best regards,

GL700_Motherboard_TLV320AIC3104IRHBR_260812.pdf

Franklin Technology
Young Chen Seo / Senior Research Engineer, HP Team, Logic Part
E-mail: syc@franklintech.co.kr
Cell: +82-10-7148-1624 / Fax: +82-2-862-8923
906 JEI Platz, 186, Gasan Digital-1ro, Geumcheon-gu, Seoul, Republic of Korea, 08502

PCM2912A: Adding PTT to Digital Intercom System

Zach Smith — Tue, 11 Aug 2026 20:32:19 GMT

Part Number: PCM2912A
Other Parts Discussed in Thread: PCM2902C

Hello, I am working with a major partner in the communications space and we are looking to make a loudspeaker for a digital intercom system. One of the requirements for the system is to use a digital PTT keying. The chip we are currently designed around is PCM2912APJT, but we are also looking into PCM2902C or any other appropriate audio codec chip. How do you recommend adding the digital PTT mechanism into this design? Is it possible with current hardware or do we need a custom solution. Quantites are in the 1000's. Thank you.

AM62D-Q1: Packing 24bits TDM2 signal in one RFIFO entry

shun yao — Tue, 11 Aug 2026 14:11:56 GMT

Part Number: AM62D-Q1

Hello Experts,

In my project, the input signal is in 2-slot TDM format, each slot 12 bits. I am wondering if each RFIFO entry ca store a whoe frame not a single slot. I got the following answer from Forum. But my quesiton is according to reference manual, 1 is a reserved value for AFSRCTL.RMOD. Will this configuraiton work?

Thanks.

Orinignal Answer:

Packing 24 bits into one RFIFO entry

With RMOD=2, McASP completes an RSR→RBUF→RFIFO transfer once per slot, giving you 2 RFIFO entries per frame. To pack both slots into a single entry, configure McASP as a single 24-bit slot: set AFSRCTL.RMOD=1, RFMT.RSSZ=0xB (24 bits), RMASK=0x00FFFFFF, and RTDM=0x1. With RMOD=1, McASP treats the frame as one 24-bit slot — one frame sync followed by 24 bit-clock cycles — which is exactly what your 2-slot TDM source produces. You get one 32-bit RFIFO entry per frame with the full 24-bit data right-justified in bits[23:0].

TLV320AIC3256EVM-U: Noob: This Codec with AEC how to achieve it?

Gokulnath Arcot — Tue, 11 Aug 2026 11:52:01 GMT

Part Number: TLV320AIC3256EVM-U

Hello,
This is my first time trying to develop an audio wearable (eg. like a walkie-talkie)
I have these:
-AIC3256USBEVM
-Pure Path Studio.

I would like to achieve the following functions as mentioned in this diagram:

My objective:
-Mic noise gate (to eliminate the white static background noise -> only voice needed)
-Echo cancellation (because Physically the mic is situated close to the speaker eg. Walkie talkie)
-need to adjust the speaker volume (stereo ground reference speakers)
-Tone generations (eg.a beep sound when max volume is reached etc. )
-Dynamic range control (to make sure the voice data is clearer & not sounding metallic etc.)
-48 Khz possible or better to stay with 44.1Khz?
-My future MCU which manages this codec is PIC32MM.

how to achieve this in pure path studio? what block diagrams i need to use?

My Current explorations:
I achieved Spotify audio playback from this below setup. But I checked with the mic, and the mic input didn't function (sound recorder app in windows pc). I connected a Samsung wired 3.5mm headset with a mic in it to test.

Please let me know how I can achieve this. Need assistance.
Thanks a lot in advance.

TAC5142: Power consumption what is the AVDD current for TAC5142 at AVDD = 1.8 V

Danny Rachmany — Tue, 11 Aug 2026 07:15:41 GMT

Part Number: TAC5142

TAC5142, AVDD=1.8V TDM Target Mode, 32-bit, 48kHz 2 ADC channels + 2 differential line-out DAC channels: What is typical AVDD current consumption?

PCM5100A: PCM5100AQPWRQ1- LDOO Value

Jishna K J — Tue, 11 Aug 2026 06:29:42 GMT

Part Number: PCM5100A

Hi Team,

For PCM5100AQPWRQ1, I need the LDOO minimum and maximum voltage values for analysis. I am unable to locate these values in the datasheet.

TAC5112: Check Codec support 3.5mm audio jack detection

Will Wang47 — Tue, 11 Aug 2026 00:59:30 GMT

Part Number: TAC5112
Other Parts Discussed in Thread: TAC5212, TAC5111,

hi team,

Customer plan to get a codec to sample and drive the 3.5mm audio jack, they need to codec get the input and output detection, which latest part get the feature? Could you help recommend?

Regards,

Will

PCM2912A: Need USB command for setting PCM2912A Codec gain, using QNX as the device SW

zack pahlma — Mon, 10 Aug 2026 23:08:48 GMT

Part Number: PCM2912A

Need USB command for setting PCM2912A Codec gain, using QNX as the device SW

TAS5441-Q1: diagnostic phase repetition detail

Gustavo Monroy — Mon, 10 Aug 2026 20:18:00 GMT

Part Number: TAS5441-Q1

Hi,

there no detail on when the repetition check phase works during diagnosis in the TAS5441-Q1

What is the exact capacitance threshold that triggers the diagnostic check phase repetition (up to 5 times) in TAS5441-Q1? Is 4µF (the max recommended C(OUT)) already considered a 'large capacitor', or does the repetition only occur above this value?

If it is above this value, what is the maximum value of capacitance that will cause a diagnostic malfunction after the 5 check phases?

Could you tell if a fixed current is used to diagnose the load and what is that value in mA?

Thanks

Gustavo Monroy

TAS2781EVM: TAS2783_EVM AMPS162 REV B

Andreas Huber — Mon, 10 Aug 2026 14:50:21 GMT

Part Number: TAS2781EVM
Other Parts Discussed in Thread: TAS2783

Hello *,

I received two EVM Boards.

TAS2783EVM-AMPS162B TAS2783. Now may question:

How can I enable this Board. I get only this Information within PPC3. What do I need to bring this Board to running?

Best Regards

Andreas

TLV320AIC3110: TLV320AIC3110IRHBR Schematic review

Ramakrishna Raja C — Mon, 10 Aug 2026 10:27:44 GMT

Part Number: TLV320AIC3110

Hi Team,

Can someone kindly help to review TLV320AIC3110IRHBR schematics.
Kindly give connection request

PCM3070: Questions regarding HP output

Robert Alfred Kecs — Mon, 10 Aug 2026 07:43:32 GMT

Part Number: PCM3070

Hi,

I am useing the PCM3070 s HP outputs single ended, i want to use LDOIN as HP power input in order to get a larger output voltage swing. There is no mention of this configuration but also no mention that it is not valid.

As for electrical caracteristics I assume Full scale output voltage (0dB) for singl eneded is 1/2 of the differential value. so about 0.889Vrms output?
Is this corect? or are there other HW limintations that reduce this value ?

Should i set CM to 0.75V or 0.9V ? Page 1 / Register 10: Common Mode Control Register - 0x01 / 0x0A

I think i should set CM=0.9 and Output Common Mode for HPL & HPR is 1.65V .

Also can the HP output function in DC mode? In the typical aplication all outputs are AC coupled. I was wandering if i can use a HP output as a DC DAC in order to set a DC bias for a circuit. What abut the Line output? I can provide a HiZ input buffer, since i expect there is not that much DC current drive strenght if any.

What do you think about this usecase/aplication?

Best regards,

Robert

TAC5212: Mono stereo part number difference

Sathya N — Mon, 10 Aug 2026 07:30:10 GMT

Part Number: TAC5212

Hi team,

Is there any specific differentiation in the part number to identify whether the codec is mono or stereo, or should we refer to the datasheet/product description to confirm the codec type?

TAC5212 - orderable part number?

Regards,

Sathya priya N

PCMD3140: PCMD3140: capture-start-latched modulo-4 phase state produces an in-band (−1)^n self-image (carrier exactly Fs/2) — deterministic reproducer available

Lorenzo Pecci — Mon, 10 Aug 2026 07:12:33 GMT

Part Number: PCMD3140
Other Parts Discussed in Thread: PCMD3180

Hi,

we are seeing a start-latched signal-corruption state on the PCMD3140 (STM32MP2 host, codec is ASI slave, DSP_B TDM 4×32, BCLK 128×fs = 6.144 MHz, auto clock config, PLL on, two PDM mics sharing PDMDIN1 on opposite PDMCLK edges, CH1/CH2, PDMCLK 3.072 MHz).

Symptom (quantified). On a fraction of capture starts, each channel's output contains an additive linear self-image: y[n] = x[n] + eps * s * (-1)^n * (h conv x)[n], where the modulation carrier sits at exactly Fs/2 (24000.0 Hz within one FFT bin), s = +/-1 and is identical on both channels within a given capture, eps is about 0.5 at 10 kHz, and |H| rises with frequency. In the spectrum, the 12-16 kHz band is a mirrored copy of the 8-12 kHz band folded around Fs/4 - i.e. the exact signature reported (and never root-caused) in thread 1014760, where a sine at Fs/4 comes out amplitude-modulated.

What we established experimentally (a demodulated-coherence detector gives a clean binary verdict in ~4 s of ambient noise; happy to share data):

The state is latched at capture start and is perfectly stable for ≥180 s.
Four phase states exist (cross-spectrum phase 0/180° or ±90° depending on register write order): 2 clean, 2 bad. It is a modulo-4 divider/commutator phase latch.
With auto clock config + PLL at BCLK=128×fs the landing is random, ~50% clean.
Every deterministic configuration lands on a BAD phase: PLL disabled (AUTO_MODE_PLL_DIS, BCLK 256×fs) → 24/24 bad; auto clock + PLL at BCLK=256×fs → 24/24 bad. This gives us a 100% reproducer.
All of the following have NO effect on the latched phase (tested on the deterministic reproducer and/or N=24 statistics at 128×fs): BIQUAD_CFG (DSP_CFG1 0x6C = 0x40/0x20/ 0x00 — we tried your 8-mic fix from thread 1644894), decimation-filter mode, channel summing, PDMCLK_DIV (0.768/1.536/3.072/6.144 MHz), PDMDIN edge select, phase calibration (register 0x7B and CHx_PCAL), keeping PLL_PDZ powered across sessions, PWR_CFG power-up ordering per datasheet 7.4.2, BCLK polarity inversion (consistently on both bus sides), and ~70 PWR_CFG/SLEEP power-bounce cycles over I²C with clocks running (those re-roll the state but ONLY between the two bad positions — never clean).
The state re-rolls ONLY when BCLK/FSYNC (re)start. Register content is identical between clean and bad captures (full page-0 hardware readback).

Questions:

Is the start phase of the decimator/output-stage clock divider chain relative to FSYNC specified/deterministic? Our data says it latches one of 4 positions at clock appearance and only the PLL path randomizes it.
Is there an undocumented register write (page 0/1, or the CLKGEN_CFG mentioned in the VAD_CFG1 custom-clock description but absent from the register map) that resets or selects this phase — the way DSP_CFG1=0x20 fixes the known 8-mic latency issue on PCMD3180?
If manual clock configuration (AUTO_CLK_CFG=1) is the intended path: what is the full register recipe for fs=48 kHz, BCLK=128×fs slave mode? With MST_CFG0=0x42 + MST_CFG1=0x46 alone the output is corrupted, and PPC3 does not document what else it writes.
Is there errata for this behavior? Thread 1014760 shows the same signature in 2020.

We can run any register sequence you suggest against the 100% reproducer and report within minutes. Thanks!

TAC5312-Q1: Can the TAC5312 4-channel output play 4 completely different audio streams simultaneously?

kun zhou — Mon, 10 Aug 2026 02:36:52 GMT

Part Number: TAC5312-Q1

Can the TAC5312 4-channel output play 4 completely different audio streams simultaneously?

If can, how to set?

According to the feature, it seems that TAC5312 can only support 2ch audio(DAC),

but in the second picture, it shows TAC5312 can support 4ch single-end output.

I want to know, if TAC5312 can support 4 completely different audio streams simultaneously(reter to the third picture)?

TLV320AIC3110: TLV320AIC3110

Ian Wang — Mon, 10 Aug 2026 02:10:35 GMT

Part Number: TLV320AIC3110

Hi Sir,

could you help advise how to enable MICDET function for jack detection function?

thanks, Ian.

TAC5212: Linux Driver for 6.6 kernel

De Bug — Sun, 09 Aug 2026 15:59:02 GMT

Part Number: TAC5212

We wish to evaluate the TAC5212 with the IMX93. IMX93 kernel is 6.6.36

There are several TAC5x1x driver repos.

www.ti.com/.../1.0 v1x 1.0 (Sep 23, 2025)
https://github.com/SolidRun/tac5x1x-linux-driver (k5.15)
https://layers.openembedded.org/layerindex/recipe/504029/ OpenEmbedded
https://git.ti.com/cgit/lpaa-android-drivers/tac5x1x-linux-driver/tree/src has 4 branches. master, dev, tac5x1x driver (and 4.x14, 5.10x and 5.15 which are probably N/A for this kernel)

Which one (and branch) to use ? We have alreay tested with the master branch of the android-driver repo. This compiles, and works, but only at 8Khz sampling rate (I/O error and no audio output at other rates with ALSA speaker-test)

TAA3040EVM-PDK: How to install TAA3040 apps in PPC3

leo zhu — Sat, 08 Aug 2026 03:39:20 GMT

Part Number: TAA3040EVM-PDK
Other Parts Discussed in Thread: TAA3040

I have installed the PPC3 software, and I want to install TAA3040EVM app, but there is only "I2C Master" in available EVM apps in the PPC3 GUI. how to install TAA3040 app as the manual shows.

TAS6754-Q1: 8 KHz sampling rate on the TAS6754-Q1 ot TAS67524?

Jai A — Fri, 07 Aug 2026 14:26:36 GMT

Part Number: TAS6754-Q1

The datasheet says: Input sample rates: 44.1, 48, 96, 192kHz

Is it possible to use 8 KHz sampling rate on the TAS6754-Q1 ot TAS67524?

If not, what multi-channel audio amplifier can you recommend that can do:

TDM-8 or TDM-16
sampling rate at least 8 KHz

PCMD3180: Requesting information for Tspec-Tc calculation - PCMD3180IRTWR

Avery Liu — Fri, 07 Aug 2026 07:06:37 GMT

Part Number: PCMD3180

Hello,

We need to confirm the Tspec-Tc temperature of this component during our testing process, and we hope you can provide the information for the following component:

Vender Part No:

Hello,

We need to confirm the Tspec-Tc temperature of this component during our testing process, and we hope you can provide the information for the following component:

Vender Part No:PCMD3180IRTWR

Description: CONV_AUDIO_PCMD3180IRTWR_WQFN24

The following is the information collected from the datasheet:

Tj=150

Rjc=25

We need the following specifications to calculate the Tspec-Tc temperature:

Pd=?

Could you please provide it?

Hope to receive your reply as soon as possible.

Best regards,

Avery

DIX9211: Inquiry regarding a replacement for Cirrus Logic WM8804

JH Shin — Fri, 07 Aug 2026 02:45:14 GMT

Part Number: DIX9211
Other Parts Discussed in Thread: DIX4192

Hello,

My customer is looking for a solution to replace the Cirrus Logic WM8804.

https://statics.cirrus.com/pubs/proDatasheet/WM8804_v4.5.pdf

Is the DIX9211 a suitable replacement for the WM8804?

Please recommend a suitable replacement solution for the WM8804 among TI's audio solutions.

Thank you.

TPA2011D1: TPA2011D1 IC - PCB Design Support

Abdulmohaimen Algamoudi — Thu, 06 Aug 2026 21:57:41 GMT

Part Number: TPA2011D1

Dear TI Support Team,

I am currently designing a PCB that uses five TPA2011D1 Class-D amplifiers together with several sensitive op-amp circuits.

Before manufacturing the PCB, which is intended for integration into the final device before its planned market launch, I would like to receive technical feedback from a TI Field Applications Engineer regarding the schematic, PCB layout, grounding, power distribution, decoupling, and possible interference between the Class-D amplifiers and the analog circuitry.

For reference, here is the link to my previous discussion with a TI expert on the public TI E2E forum:

https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1669617/tpa2011d1-tpa2011d1-shared-ground-plane-with-sensitive-op-amp-circuitry/6441685

The schematic and PCB layout contain confidential project information. Before uploading these design files through this support ticket, could you please confirm whether the files and messages submitted here are private and accessible only to the relevant TI support engineers?

I do not want the schematic or PCB layout to be published on the public TI E2E forum or otherwise made publicly accessible.

If this ticket is not suitable for sharing confidential design files, could you please connect me with the appropriate TI Field Applications Engineer or provide a secure channel through which I can submit the files for review?

Thank you very much for your support.

Best regards,
Abdulmohaimen Algamoudi

TPA3255: TPA3255 design-in for a compact production stereo amplifier — reference design, universal mains, and thermal

Scott McGowan — Thu, 06 Aug 2026 18:19:19 GMT

Part Number: TPA3255

Hello,

I'm Scott McGowan, founder of Sprout HiFi. We're developing a compact premium integrated stereo amplifier and are designing in the TPA3255 as the output stage, targeting production. A few applications questions as we lay out the production design:

• Reference design: is there a current TI reference design, or EVM-to-production guidance, for the TPA3255 in a compact, chassis-integrated stereo product that we could use as a starting point?

• Universal mains: we plan a single worldwide SKU, so we want one PVDD rail / power-supply design that operates across global mains without a voltage-select switch. What is TI's recommended approach for the PVDD supply in that context?

• Thermal: the amplifier sits in a small, largely sealed enclosure. What is TI's guidance on thermal design and heatsinking for the TPA3255 at continuous real-world audio power in that kind of chassis?

Any pointers to relevant app notes or reference designs are welcome. Thank you.

Scott McGowan
Sprout HiFi