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Building with the Soekris dam1121
Building with the Soekris dam1121
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Old 10th April 2018, 10:07 AM   #411
janho12345 is offline janho12345  Germany
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Join Date: Mar 2016
Location: BW /Germany
For my understanding, please help me!

Aren’t all data upsampled to something way above 356Khz in FIRII?! And the master clock frequency from soerens programmable si5xx is not standard 22/24?

That would mean one can not use another external clock than a si5xx.

Just asking!
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Old 16th April 2018, 11:04 AM   #412
First Watt Guy is offline First Watt Guy  Viet Nam
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I would like to connect Pi3 via IIS to 2 boards of SOEKRIS in fully balanced mode., How do I do ?

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FWG
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Old 23rd April 2018, 01:23 PM   #413
TNT is offline TNT  Sweden
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Which capacitor and value form the LP on the output of the 1121?

Arrow in picture would be appreciated :-)

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Old 8th May 2018, 05:48 AM   #414
SilentGrace is offline SilentGrace  China
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Join Date: May 2015
I try to build a balance dac with two dam1121,I set one dam1121 MCFG3..0 is 0010 and connect a external SI570 with I2C bus for left channel; I set the other dam1121 SCFG3..0 is 0101,but the master board isn't lock.Master serial port print "M3" and" L000",and the slaver board serial port print" S4"" L384".I have try with I2S and spdif ,the LOCK LED in master is always blink.What might be the problem?
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Old 8th May 2018, 06:38 AM   #415
SilentGrace is offline SilentGrace  China
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Join Date: May 2015
Quote:
Originally Posted by soekris View Post
The dam1121 check if external Si570 oscillator is present, if so it will use it and disable the internal oscillators.

The dam1121 is picky on the Si570, it need to be 3.3V LVDS, I2C address 0x55, startup clock 10 Mhz, OE Polarity active high, and it can't be the 20 ppm stability version....

You can look up p/n at Lookup and Customize | Silicon Labs

570BAA000112DG is fine.
I think I my get the problem.My si570 is 570BCC000112DG with 20ppm stability version,is any way to make 1121 work with this oscillator?
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Old 8th May 2018, 09:12 AM   #416
SilentGrace is offline SilentGrace  China
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Join Date: May 2015
I found the 20ppmsi570's Registers is 13-18,but the other is 7-12,seems must need a special FW.I decided use the si514 on master board,and buffer it with max9180.Or may I remove the si514 on board and replace my 20ppm si570 as a external oscillator?May be I need make the I2C wire to connect to original si514 solder pad.
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Old 8th May 2018, 09:52 AM   #417
soekris is offline soekris  Denmark
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Building with the Soekris dam1121
Quote:
Originally Posted by SilentGrace View Post
I found the 20ppmsi570's Registers is 13-18,but the other is 7-12,seems must need a special FW.I decided use the si514 on master board,and buffer it with max9180.Or may I remove the si514 on board and replace my 20ppm si570 as a external oscillator?May be I need make the I2C wire to connect to original si514 solder pad.
The 570BCx 20ppm versions have a different programing interface, don't ask me why, and are NOT supported by the dam1121.
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Old 21st May 2018, 05:47 AM   #418
SilentGrace is offline SilentGrace  China
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Join Date: May 2015
Default strange distortion!

My 2 1121 balance DAC beta was finished,but I get a strange distortion when I set the PC volume is 0dB and the 1121 volume control set to -3dB .If I set the PC volume to-3dB and the 1121 volume control set to 0dB,the distortion is disappear~
Is it looks like the data is overflow after SRC?
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Old 3rd June 2018, 01:04 PM   #419
derekr is offline derekr  Barbados
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Join Date: Mar 2009
Søren, are you close to releasing the 1121 filter update? I am fighting a rearguard action here trying to persuade two potential customers of yours that they should buy the 1121. It is hard to argue with them when they point out that the 1021 with the new filters sounds better than the (more expensive) 1121!!

Help.....🙃
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Old 3rd June 2018, 09:18 PM   #420
soekris is offline soekris  Denmark
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Building with the Soekris dam1121
Quote:
Originally Posted by derekr View Post
Søren, are you close to releasing the 1121 filter update? I am fighting a rearguard action here trying to persuade two potential customers of yours that they should buy the 1121. It is hard to argue with them when they point out that the 1021 with the new filters sounds better than the (more expensive) 1121!!

Help.....��
I'm sorry it's taking its time, the problem is we currently have the best weather ever in denmark, making it hard to get work done....

I'll get it done this week.
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