Yes, it uses i2s format and converts it to a usable format per chip used. i2soverusb from jlsounds has the option. Also from our diy member here @eclipsevl https://www.diyaudio.com/community/...tichannel-input-output-interface-york.413504/
Joined the club with PCM1702 board from @passive420 🙂
York->Direct connection to PCM1702, I've bypassed the shift register because there was an issue with one of the IC's.
USB powered (5V->TPS65131->LM317/337 to get +/-5V) and a headphone amp from Ali.
York->Direct connection to PCM1702, I've bypassed the shift register because there was an issue with one of the IC's.
USB powered (5V->TPS65131->LM317/337 to get +/-5V) and a headphone amp from Ali.
Quick follow up question. Has anyone played with separate power supplies for the right and left channel DAC chips and opamps, and if so, what was the verdict? Sort of a dual mono setup.
I recommend use CPLD for TDA1541 Dac, because the sound is Very Clear,
Very Smooth,
High and mid frequency wonderfully good,
I can hear music for long time .
@miro1360 I planning to replace this schematic with the shift register on TDA1541dac.
Is this schematic correct?؟
Very Smooth,
High and mid frequency wonderfully good,
I can hear music for long time .
@miro1360 I planning to replace this schematic with the shift register on TDA1541dac.
Is this schematic correct?؟
I think a year and change ago @miro1360 helped me devise VHDL code with 2/3 input sources and one output I2S with EPM240, change of input source was reflected through three LEDs. instead of using it I later modified it use an I2C based SSD1309 or I2C based HD44780 initially I succeeded in both of them displaying the input. What I wanted next was to use F0,F1,F2,F3, DSD pins on Amanero to display sample rate or DSD on the OLED/LCD.
The code shared above was the reference library I wrote for SSD1309 still searching for the one I wrote for HD44780, and the last working code for EPM240 where these were implemented, I think I worked out an IR code as well, changed laptop in between so still searching for them.
The file looks truncated?
Also, maybe it would be good to create a Github for them to make keeping track easier?
Hallo Rehan, would it be possible with Amanero F0,F1,F2,F3, DSD pins to show sample freq without arduino?
If we incorporate it in the VHDL code that @miro1360 is currently working on provided EPM240 has enough horsepower left then yes, it can be done and an additional mcu like Arduino will not be needed.
Ok. I have no idea what epm240 is, understand something programmable for doing CPLD, which I do not think I'll do (or yes, who knows), however that would be really interesting. Since I made a fuss now (again), is there any significant sound difference with and without CPLD? I mean its purpose is only bypass the shift registers, right?
EPM240 is a CPLD, @miro1360 has been working on a project for the DAC for signal switching between 3 I2S signals (lets say USB, Bluetooth, another 1), in addition it will be eliminating the logic gates as the CPLD will be programmed to work in their place, there are obvious advantages short signal path for one, it'd be much better if one IC can perform the job of 6 or 8 or 10 ICs. I have tried it with AD1865 and TDA1541 yes there is a difference in sound quality.
@miro1360 check this one out:
https://www.aliexpress.com/item/1005003749170513.html?spm=a2g0o.cart.0.0.4ff838da0cfTrY&mp=1
As I have some knowledge of verilog I am considering using this one, you thoughts opinion please.
Signal switching, I2S to PCM, I2C display, and may be an IR and optical encoder option.
Rehan, studied a couple of minutes this cpld thing.
It's indeed pheasible.
My only question is if I can plug to the i2s-cpld board that ak4118 board (SPDIF, optical, Bluetooth and amanero on top) that we use. I guess yes, so I can maintain the input selector as it is.
Am I right?
It's indeed pheasible.
My only question is if I can plug to the i2s-cpld board that ak4118 board (SPDIF, optical, Bluetooth and amanero on top) that we use. I guess yes, so I can maintain the input selector as it is.
Am I right?
Attachments
Actually miro has two versions of the CPLD, one is the development module whose picture you have shared, you can connect the I2S output of AK4118 board to it and you can bypass all the logic gates on TDA1540, TDA1541, AD1865, AD1862 boards. There are different versions of the firmare that you ll have to program "into" the CPLD for each DAC chip.
The second version of the CPLD is one whose PCB miro1360 has designed which is a custom board and it will be able to replace the AK4118 in some ways and not in some other. e.g; there will be no display.
And I am working on an FPGA version of the same with many more capabilities, since I have lots of AD1865 to work with I could try and make many different version, but again that's what DIY is all about.
BTW: I am going to give AK4137 board a try soon.
Well, I took the plunge and bought a pair. I was slightly worried as the markings looked different (see picture). They do seem to work just fine though (listening to them now)!
Using the PSU 1 Eco so the PCBs stack because I wanted a compact build for my desk. Sounds fantastic with my Whammy HPA and ACA Mini. Turns out there is actually still a bit of space in the case, so I'm contemplating squeezing in another transformer and a PSU2-Mini to power the USB-Board.... Wondering if it would be worth it.