Twisted Pear Audio - Buffalo32S (ES9018 DAC) - Page 61

glt · 8th August 2009, 03:22 AM

HDMI was invented for two purposes: one to simplify cabling and two to ensure high resolution signals are securely delivered to the rendering device (i.e., the digital signal not captured through other means). This means that whoever is implementing HDMI in the sending and receiving end must sign a license and among other things the license legally enforces you to ensure that the digital signal is never exposed until rendered to analog.

But if you can tap into the DSD signals in the clear, you can feed them to Buffalo... Some have done that with some Denon players

Joshua_G · 8th August 2009, 03:58 AM

Thanks.

I thought HDMI is protected only for video.

Any idea which Denon Players?

NicMac · 8th August 2009, 06:37 AM

Buffalo takes DSD so if you can locate the non-coded signal in the SACD player you are in luck. It's quite easy on some players but you will have to do some research on your own model.
Nic

Joshua_G · 8th August 2009, 10:41 AM

Does anyone have info about Denon DVD-3930 DSD?

BrianDonegan · 9th August 2009, 03:16 AM

Find out what DAC chip it uses (most likely the TI DSD179x). Look up the datasheet, and find the DSD signal pins. Trace them on the board to a convenient place to tap them and you are in business.

Joshua_G · 9th August 2009, 02:37 PM

Hi Brian,

Thank you very much.

Joshua_G · 9th August 2009, 02:49 PM

The DAC is Burr-Brown PCM1796. I have its' Data Sheet. What pin letters refer to the DSD?

BrianDonegan · 9th August 2009, 03:14 PM

pins 1-3

Joshua_G · 9th August 2009, 03:52 PM

Thanks.

1. Pins 1-3 are labeled ZEROL, ZEROR, MSEL. To what input pins in Buffalo32s DAC each one should be connected?
2. Do I need connect DGND from the player to the DAC?
3. Would a shielded cable for the DSD have any benefit?

Russ White · 9th August 2009, 04:30 PM

On the PCM1796 when it is in DSD mode:

Connect DGND from the player PCB to GND at the Buf32S input.
Pin 7 is the bit clock: connect to DCK on the Buf32S.
Pin 5 is Left channel data: connect to D1 on the Buf32S.
Pin 4 is Right channel data : connect to D2 on the Buf32S.

This will only work correctly while the player is in DSD mode.

If you want to switch between DSD and PCM you will need something like an OTTO.

Cheers!
Russ

8th August 2009, 03:22 AM	#601
glt diyAudio Member Join Date: Oct 2004	HDMI was invented for two purposes: one to simplify cabling and two to ensure high resolution signals are securely delivered to the rendering device (i.e., the digital signal not captured through other means). This means that whoever is implementing HDMI in the sending and receiving end must sign a license and among other things the license legally enforces you to ensure that the digital signal is never exposed until rendered to analog. But if you can tap into the DSD signals in the clear, you can feed them to Buffalo... Some have done that with some Denon players __________________ www.hifiduino.wordpress.com

9th August 2009, 04:30 PM	#610
Russ White diyAudio Member Join Date: Jan 2005 Location: Nashville, TN, USA	On the PCM1796 when it is in DSD mode: Connect DGND from the player PCB to GND at the Buf32S input. Pin 7 is the bit clock: connect to DCK on the Buf32S. Pin 5 is Left channel data: connect to D1 on the Buf32S. Pin 4 is Right channel data : connect to D2 on the Buf32S. This will only work correctly while the player is in DSD mode. If you want to switch between DSD and PCM you will need something like an OTTO. Cheers! Russ __________________ Less pulp more juice Twisted Pear Audio.

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8th August 2009, 03:58 AM	#602
Joshua_G diyAudio Member Join Date: Nov 2008 Location: Israel	Thanks. I thought HDMI is protected only for video. Any idea which Denon Players?

8th August 2009, 06:37 AM	#603
NicMac diyAudio Member Join Date: Feb 2009	Buffalo takes DSD so if you can locate the non-coded signal in the SACD player you are in luck. It's quite easy on some players but you will have to do some research on your own model. Nic

8th August 2009, 10:41 AM	#604
Joshua_G diyAudio Member Join Date: Nov 2008 Location: Israel	Does anyone have info about Denon DVD-3930 DSD?

9th August 2009, 03:16 AM	#605
BrianDonegan diyAudio Member Join Date: Dec 2004 Location: Rock Ridge	Find out what DAC chip it uses (most likely the TI DSD179x). Look up the datasheet, and find the DSD signal pins. Trace them on the board to a convenient place to tap them and you are in business.

9th August 2009, 02:37 PM	#606
Joshua_G diyAudio Member Join Date: Nov 2008 Location: Israel	Hi Brian, Thank you very much.

9th August 2009, 02:49 PM	#607
Joshua_G diyAudio Member Join Date: Nov 2008 Location: Israel	The DAC is Burr-Brown PCM1796. I have its' Data Sheet. What pin letters refer to the DSD?

9th August 2009, 03:14 PM	#608
BrianDonegan diyAudio Member Join Date: Dec 2004 Location: Rock Ridge	pins 1-3

9th August 2009, 03:52 PM	#609
Joshua_G diyAudio Member Join Date: Nov 2008 Location: Israel	Thanks. 1. Pins 1-3 are labeled ZEROL, ZEROR, MSEL. To what input pins in Buffalo32s DAC each one should be connected? 2. Do I need connect DGND from the player to the DAC? 3. Would a shielded cable for the DSD have any benefit?