About the SRC4192

gaetan8888 · 25th December 2010, 06:34 AM

Hello

About the SRC4192

In bypass mode, do the signal still pass through the interpolation filter and do the SRC clock still control it ?

It's not clear about that in the data sheet.

Thank you

And merry Christmas to all.

Gaetan

SoNic_real_one · 07:26 PM

Looks like the data goes un-touched in the bypass mode:

Quote:

BYPASS MODE
The SRC4192 and SRC4193 include a bypass function, which routes the input port data directly to the output port, bypassing the ASRC function. Bypass mode may be invoked by forcing the BYPAS input (pin 9) high for either the SRC4192 or SRC4193. For the SRC4193, the bypass mode may also be accessed using the BYPAS bit in Control Register 1. For normal ASRC operation, the BYPAS pin and control bit should be set to 0. No dithering is applied to the output data in bypass mode, and the digital attenuation and mute functions are also unavailable.

gaetan8888 · 25th December 2010, 07:47 PM

Hello

So, wen using the bypass mode, it's become a non-oversampling dac.

Bye

Gaetan

SoNic_real_one · 25th December 2010, 08:03 PM

Not a DAC. Just a "wire" for the data...

gaetan8888 · 08:34 PM

Hello

Yes, I was meaning that the dac chip become kind of non-os.

I presume that wen the SRC are bypass, it's the spdif signal through the receiver chip, who give the clock an not anymore the SRC ?

Thank

Bye

Gaetan

SoNic_real_one · 25th December 2010, 10:56 PM

The clock will be the one from the SPDIF receiver, recuperated from the SPDIF stream.
The DAC will be OS or NO-NOS based on the DAC configuration, the SRC doesn't do nothing to that.
If the DAC has an 8x OS mode for 44.1/48kHz, then it will be OS. It might have an 4x mode for 88.1/92kHz and a 2x mode for 192khz... or it might be 1x for all the above - it's all depends of the DAC.

25th December 2010, 06:34 AM	#1
gaetan8888 diyAudio Member Join Date: Apr 2007	About the SRC4192 Hello About the SRC4192 In bypass mode, do the signal still pass through the interpolation filter and do the SRC clock still control it ? It's not clear about that in the data sheet. Thank you And merry Christmas to all. Gaetan

25th December 2010, 08:20 PM	#5
gaetan8888 diyAudio Member Join Date: Apr 2007	Hello Yes, I was meaning that the dac chip become kind of non-os. I presume that wen the SRC are bypass, it's the spdif signal through the receiver chip, who give the clock an not anymore the SRC ? Thank Bye Gaetan Last edited by gaetan8888; 25th December 2010 at 08:34 PM.

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25th December 2010, 07:47 PM	#3
gaetan8888 diyAudio Member Join Date: Apr 2007	Hello So, wen using the bypass mode, it's become a non-oversampling dac. Bye Gaetan

25th December 2010, 08:03 PM	#4
SoNic_real_one diyAudio Member Join Date: Jan 2008 Location: Virginia	Not a DAC. Just a "wire" for the data...

25th December 2010, 10:56 PM	#6
SoNic_real_one diyAudio Member Join Date: Jan 2008 Location: Virginia	The clock will be the one from the SPDIF receiver, recuperated from the SPDIF stream. The DAC will be OS or NO-NOS based on the DAC configuration, the SRC doesn't do nothing to that. If the DAC has an 8x OS mode for 44.1/48kHz, then it will be OS. It might have an 4x mode for 88.1/92kHz and a 2x mode for 192khz... or it might be 1x for all the above - it's all depends of the DAC.