SMSL M8A – ES9028Q2M DSD512/768khz capable..

okay,
according to their marketing, the M8A with one ES9028Q2M and a XMOS XU208 inside, is, as per their description, absolute DSD512/768khz-capable:
they say its primarily „solved“ by their custom-made/specialized XMOS XU208-firmware..
so if someone gets a hand on this firmware, rewrite it a little bit, everybody with a XMOS XU208-USB-bridge could eventually benefit from this and everyone with such a USB-Bridge could get DSD512/768khz..(with an ES9028Q2M).
but i guess we have to wait for that/its just only an idea 😉

Link ($249)->Newegg->https://www.newegg.com/Product/Product.aspx?Item=12K-01R2-00045

DAC:ES9028Q2M DAC chip
Input: USB/Optical/Coaxial
Output: RCA analog output
Dynamic range: 125dB
SNR: 117dB
THD + N: <0.0003%
USB: DSD: 2.8224/5.6448/11.2896/22.5792 MHz
USB: PCM: 44.1/48/88.2/96/176.4/192/352.8/384/705.6/768 KHz

„M8A as upgrade version of M8Hardware upgrade:Using the 2nd gerneration of XMOS USB audio solution XCore200 Xu208.DAC chip using ES9028Q2M.Upgrade for sampling rate:upgrade from 384kHz DSD128 to 768kHz DSD512.Driver is exclusively customized and support native DSD,which is very advanced in audio range.
Newest-Driver (M8A)->SMSL-M8A-XMOS-V4.11.0-2017-06-12

„Skysong“ – XMOS-XU208-USB (4 LEDs-> Power+SF)

so,
here another XMOS-XU208-USB-Bridge (this time with 4 built-in LEDs->power and sample-frequency):

Taobao 168Yuan+10Yuan shipping worldwide=22,68€=27$>

https://item.taobao.com/item.htm?spm=a211ha.10565794.0.0.e1360b5U0Xo17&id=560049846644&toSite=main

4.SkySong XU208 support sampling frequency display f0 f1 f2 f3 dsd-pcm can display different sampling frequency (and other with the same paragraph pcm dsd instructions compared with our with a sampling instruction)

(4. SkySong XU208 Unterstützung Abtastfrequenz Anzeige f0 f1 f2 f3 dsd-pcm kann verschiedene Abtastfrequenz anzeigen (und andere Modelle mit der gleichen pcm dsd-Anzeige mit Probenahme-Anweisungen))
7.SkySong XU208 support external 5V dc power supply

(7. SkySong XU208 unterstützt externe 5V DC Stromversorgung“)

Link-tip: Audiophonics.fr

so,
Audiophonics.fr has wonderful pricey DIY-things, like cheap DC-DC Converter Module 3.3-13V to +/-15V by example but also a lot of DIY-Hifi-equipment..found it originally by their ES9028Q2M Audiophonics-made „Audiophonics I-Sabre ES9028Q2M TXCO„-HAT..
can be also expensive, u have to look exactly, but as said also relatively pricey things and they resident in the EU->means shorter shipping-times (for me)..
interesting site..😉


HDMI I2S LVDS to I2S Input Module HDMI I2S LVDS to I2S Output->24,90€->https://www.audiophonics.fr/en/diy-interfaces/hdmi-i2s-lvds-to-i2s-input-module-hdmi-i2s-lvds-to-i2s-output-p-12422.html

Singxer Q1 – USB Digital Interface Board – XU208 Chip (FSx-schematics)

so,
found by chance this XMOS USB-interface board; is well known->https://kitsunehifi.com/product/singxer-q1-digital-interface-board-xu208
54€ at Ebay..->LINK


(the following picture is not from a Singxer Q-1; just to illustrate (its from another XMOS-XU208)

so far so good, looks like normal XMOS-USB-bridges..
but interesting are the schematics to it and finally some (perhaps) information about the FS0, FS1, FS2, Mute and DSD_ON-pins..(they are nearly on every XMOS-USB-board)..
they say:
„Signal definition:
I2S socket Output Signal Description:
1 , the MUTE is high mute; DSD_ON is high DSD data stream;
2 , all the electricity an average of LVCMOS, voltage of 3.3V ;
3 , 3.3+ output power, low output current 50mA;
4 , the MCLK output 22.5792Mhz or 24.576Mhz clock;
5 , FS0, FS1, FS2 sampling rate indicator level, FS3 not;

(or, from another source: 5) FS0, FS1, FS2 is sampling rate indicator level, FS3 has no use !!)
and with this schematics:

so, the question is, are they frequency-„switches“ or, what they´ve written, „sampling rate indicator(s)“..

(but beware,they also say:“Please note, schematics and firmware (XMOS) are our own development, not the public version“)

don´t know at present, but if they are „sampling rate indicators“ you can connect some LEDs (or similar) to them and then you have your desired „sample rate indicator“ and can display it via a tftlcd or something..(but still unclear about it here; will post here any other info)

2.6″ TFT-lcd (320*240) SPI Arduino Mega 2560 *mcufriend*

so,
lucky me, i got today my 2.6″ (320*240) SPI-TFTLCD-display directly from china, of about 3,40€ !! 😉 (inclusive shipping), unbelievable, from Aliexpress..


all in regard of my planned DIY-DAC (see some posts before and therefore the website is all about 😉 ), cause this TFT-LCD should show the input-source (USB,Coax,Opt.), sampling frequency, filter settings (FIRs), Volume (db) and so on..
okay, there was no information on the sellers-site about the chipset in it (and i need the info for the different Arduino+Raspberry GFX-libraries) i had to google a lot and will now show the „results“:
First, in this special TFT is an „ILI9341„; read out on a RPI3B with „fbtft_device“->

second, problem now was, because there were absolute no documentation about the pin-layout on the backside, how to wire it for SPI ?
so, a lot of googling again and here are the results Part II.:


so, my final wiring is now:
3,3V (5V is not working) Pin5 from the 6pin header at the bottom->to RPI Pin1 (Power)
GND Pin2 from the 6pin header->RPI Pin9
MOSI to MOSI !! means „SD_in“ on the first picture -> RPI pin19
MISO to MISO means „SD_Out“ ->RPI pin21
CS to „SD_CS“ ->RPI pin24 !! (CE0) ((not pin26)->CE1)
and SCLK to „SD_SCK“ ->RPI pin23..
(unfortunately i have only a light screen here now, but i guess it has something to do with the software; i will make here an update if necessary)..
(just as info for other user with similar problems)..
good tuturial: SPI on a raspberry pi->https://www.xgadget.de/anleitung/2-2-spi-display-ili9341-am-raspberry-betreiben/

AK4113 + CS8416 Digital-Receiver SPDIF to I2S converter+ software control + 1602 LCD wiring-diagram

so,
after i looked about some cheap SPDIF (Coax+opt) to I2S converter, i came across these 2 birds:
AK4113: (10$ at Ebay & Aliexpress)and CS8416: (12$ at Ebay & Aliexpress)
they are both capable of max 192khz input and u can select the input-port via the „BUT“-port switch..
The LCD-display should show the Input-Line and the sample-frequency..
and because there were no wiring diagram on the sellers-site i searched a bit/lot and found some wiring-diagrams for these 2 on audiophonics.fr..
(just in case there were also google-user who are interested in such a diagram)

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