Good morning,
I'm looking to merge 8 analogs inputs into single digital link (an XLR), and then convert again digital signal to 8 analogs outputs.
For this, I've searched any chip that would achieve that. I've found some chips accepting 8 analogs inputs, such as CS5358 but it doesn't merge outputs into single serial bus.
I'm both interested to DIY entire circuits, or to purchase a module to achieve what I want to do.
Digging deeper, I've found that the Behringer Ultranet protocol achieves something like I want to do: they bundle 8 channels into 2 pins (seems like AES/EBU differential) inside the Cat5 Ethernet cable. Is there any open source protocol/schematic which achieve something like this?
Should I work with CS5358 and then add something else to merge outputs into single serial bus? If yes, what kind of chips I can use?
Thanks in advance.
I'm looking to merge 8 analogs inputs into single digital link (an XLR), and then convert again digital signal to 8 analogs outputs.
For this, I've searched any chip that would achieve that. I've found some chips accepting 8 analogs inputs, such as CS5358 but it doesn't merge outputs into single serial bus.
I'm both interested to DIY entire circuits, or to purchase a module to achieve what I want to do.
Digging deeper, I've found that the Behringer Ultranet protocol achieves something like I want to do: they bundle 8 channels into 2 pins (seems like AES/EBU differential) inside the Cat5 Ethernet cable. Is there any open source protocol/schematic which achieve something like this?
Should I work with CS5358 and then add something else to merge outputs into single serial bus? If yes, what kind of chips I can use?
Thanks in advance.
Check something like this:
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Common link to this is a TDM protocol and appropriate serial-deserial converters.
Access to this page has been denied.
Common link to this is a TDM protocol and appropriate serial-deserial converters.
CS5368 in TDM mode. Or use any ADC or DAC, multichannel or multiple 2ch chips, and roll your own TDM interface.
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CS5368 seems to be a very good idea. Any schematic/pre-made module?
Also, can I use CS4385 at the another end to decode the CS5368 output into 8 analog out?
Also, can I use CS4385 at the another end to decode the CS5368 output into 8 analog out?
Behringer UMC1820
RME - Fireface UCX
In "Adat" mode runs 8x44,1 ksps channels on one digital channel.
//
RME - Fireface UCX
In "Adat" mode runs 8x44,1 ksps channels on one digital channel.
//
Member
Joined 2018
FYI:My FreeDSP ADAT-IO-x4 Development
Hi manoaratefy-San,
View attachment ADAT-IO-x4.pdf
Currently I'm working on ADAT I/F for FreeDSP I8S slots.
Attached files are current design. (Not evaluated yet as of now)
Maybe I can release this design a few month later...
CyberPit
Hi manoaratefy-San,
View attachment ADAT-IO-x4.pdf
Currently I'm working on ADAT I/F for FreeDSP I8S slots.
Attached files are current design. (Not evaluated yet as of now)
Maybe I can release this design a few month later...
CyberPit
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Member
Joined 2018
Cyberpit,
I am interested in the function of those 100k resistors apparently feeding back the ADC input to the buffer input, R10, R23 etc.
I was kind of expecting to see these biasing that initial op amp to VBias.
You could combine these ADC's - a brutal way would be with a device like an ADAU1XXXX though I suspect that there will be an I2S to TDM combiner out there somewhere. The ADAU devices can output TDM serial audio on the one output - though you might find that the data rates get brutally high and limit how far you can move it before you run into transmission problems.
I am interested in the function of those 100k resistors apparently feeding back the ADC input to the buffer input, R10, R23 etc.
I was kind of expecting to see these biasing that initial op amp to VBias.
You could combine these ADC's - a brutal way would be with a device like an ADAU1XXXX though I suspect that there will be an I2S to TDM combiner out there somewhere. The ADAU devices can output TDM serial audio on the one output - though you might find that the data rates get brutally high and limit how far you can move it before you run into transmission problems.
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Member
Joined 2018
Hi googlyone-San,
CS85368 pin7 is VQ as a ADC internal quiescent reference voltage. So this design feeds this voltage instead of 1/2 VCC. I added voltage follower to reduce the channel cross-talk and HF noise. Change the setting of CS85368 pin through 37-40 then I8S output should be possible.
For example ADAU1701 has only one serial input-bus, thus means TDM format should be use if you want to build 8in 8out DSP system with this chip anyway. The previous ADAT schematic is intend to use in my single TOS-LINK optical connected separate active speaker project. (DAC and Power Amplifier Integrated) 😀
CS85368 pin7 is VQ as a ADC internal quiescent reference voltage. So this design feeds this voltage instead of 1/2 VCC. I added voltage follower to reduce the channel cross-talk and HF noise. Change the setting of CS85368 pin through 37-40 then I8S output should be possible.
For example ADAU1701 has only one serial input-bus, thus means TDM format should be use if you want to build 8in 8out DSP system with this chip anyway. The previous ADAT schematic is intend to use in my single TOS-LINK optical connected separate active speaker project. (DAC and Power Amplifier Integrated) 😀
Member
Joined 2018
Sorry, I made miss...
CS85368 --> CS5368
"I8S" is not official name but de-facto naming
I2S --> 2ch Serial bus STEREO-DATA, BCLK, LRCK
I8S --> 8ch Serial bus STEREO-DATA x4, BCLK, LRCK
Use of language in audio is bad enough without making it worse. I2S is already misused as a blanket term for all serial audio formats.
I2S --> I Squared S --> Inter IC Soundbus.
I2S --> I Squared S --> Inter IC Soundbus.
Member
Joined 2018