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ES9038Q2M Board
ES9038Q2M Board
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Old 21st November 2017, 08:25 PM   #11
DRONE7 is offline DRONE7  New Zealand
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Ok thanks. You are doing i2s>toslink/coax>Es9038q2m

Seems no one has direct i2s pi>Es9038q2m working yet...

It will happen eventually...
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Old 21st November 2017, 08:26 PM   #12
TioFrancotirador is offline TioFrancotirador  Poland
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No!
I do direct I2S from Hifiberry digi+ pro to es9038q2m (no coax, no toslink).
An externally hosted image should be here but it is no longer accessible. Please upload images instead of linking to them to prevent this.

Toslink is connected to TV and currently playing from TV on the picture (J2 shorted). To play I2S J2 and J3 pins should be open.

Last edited by TioFrancotirador; 21st November 2017 at 08:35 PM.
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Old 21st November 2017, 08:49 PM   #13
DRONE7 is offline DRONE7  New Zealand
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Your image won't load so I can't see what you have set but...
Quote:
The HiFiBerry Digi+ Pro is a high-quality S/PDIF output for the Raspberry Pi. It uses the I2S sound port that connects directly to the CPU without the need for an additional USB conversion.
This is not an i2s output device... it outputs spdif either toslink or coax so you must be sending one of those to the 9038q2m dac...
HiFiBerry Digi+ Pro | HiFiBerry

see attachments...
0=connection x=open...
so coax is J2 optical is J3 and i2s is both J2 and J3

You seem to have it reversed and are using x=connection o=open

If I could see your image I maybe could see if your board is different version.. Mine is VR-1.04
Attached Images
File Type: png Screenshot from 2017-10-11 12-32-24.png (172.2 KB, 446 views)

Last edited by DRONE7; 21st November 2017 at 08:55 PM.
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Old 21st November 2017, 08:53 PM   #14
TioFrancotirador is offline TioFrancotirador  Poland
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Quote:
Originally Posted by DRONE7 View Post
Your image won't load so I can't see what you have set but...
see attachments...
0=connection x=open...
so coax is J2 optical is J3 and i2s is both J2 and J3

You seem to have it reversed and are using x=connection o=open

If I could see your image I maybe could see if your board is different version.. Mine is VR-1.04
Right click on image and try to open it in another tab. Should work.
I got same version as you and J2 shorted is for toslink and J3 shorted is for coax in my board. I2S is when J2 and J3 are opened or both shorted (I just tested it).
And BTW Hifiberry digi+ pro has also I2S out. You just need to solder 5 pins on the board.

Last edited by TioFrancotirador; 21st November 2017 at 09:11 PM.
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Old 21st November 2017, 10:06 PM   #15
DRONE7 is offline DRONE7  New Zealand
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Quote:
And BTW Hifiberry digi+ pro has also I2S out. You just need to solder 5 pins on the board.
Ah,I see that now !
Hmm, the hifiberry site talks about patched kernel.
I might try some experiments tonight and see what I can make or break..

Thanks for your input..!

Ok, I think I see something...looking at your image you have the standard 3 wire +Gnd connection and checking the HiFiBerry connections..
DAC+ Pro - connect external I2S DACs – HiFiBerry
Assuming pass through on all but the unused pin2-sample rate then the difference is the bit clock which is output at 32/64*sample rate.
I will try upsampling with sox and see if this will get lock...

Last edited by DRONE7; 21st November 2017 at 10:31 PM.
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Old 21st November 2017, 10:56 PM   #16
TioFrancotirador is offline TioFrancotirador  Poland
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Yes.
I am using newest Volumio build. It was updated with kernel to handle Hifiberry digi+ pro two or three months ago.
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Old 22nd November 2017, 05:55 AM   #17
freezebox is offline freezebox  Germany
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one question to the analog output. Are there serial DC blocking caps in the signal path for the operation in single voltage mode (+15-0)? If so, can they be removed in case of using +15 - 0 - -15?
And@TrioFrancotirador: Do you feed the digital section with 5V or with 8V?
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Old 22nd November 2017, 06:17 AM   #18
TioFrancotirador is offline TioFrancotirador  Poland
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I am actually using 5VDC. It is enough.
As for the serial caps in signal path it is very interesting note. I do not know ... yet, but I will try it, measure it and post results in the afternoon
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Old 22nd November 2017, 07:05 AM   #19
DRONE7 is offline DRONE7  New Zealand
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Quote:
Originally Posted by DRONE7 View Post
Ah,I see that now !

Ok, I think I see something...looking at your image you have the standard 3 wire +Gnd connection and checking the HiFiBerry connections..
DAC+ Pro - connect external I2S DACs HiFiBerry
Assuming pass through on all but the unused pin2-sample rate then the difference is the bit clock which is output at 32/64*sample rate.
I will try upsampling with sox and see if this will get lock...
Yes! It works...! Using Generic-2 I2S (rpi-dac) setting in MoOde Audio and upsampling to 32/96 or better with sox gives lock and playback commences...

Guessing here that the internal processing of ES 90xx dacs is at 32bit and this dac is configured to expect 32 bit or better.
May have something to do with the onboard mcu (and it's implementation of filter options.)

Anyways...it works via i2s at upsampled to 32 bit ( or HiFiberry dac @TioFrancotirador ) or possibly Allo Kali reclocker ?? Anyone got one to try ?

Last edited by DRONE7; 22nd November 2017 at 07:15 AM.
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Old 22nd November 2017, 07:47 AM   #20
Blackfear is offline Blackfear
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Hi, i will try it with Kali Reclocker, but still waiting for this DAC from Ebay (hope this week i will test it), but i think that it should work, if kali lock it...
Vita

Last edited by Blackfear; 22nd November 2017 at 08:07 AM.
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