I2S query

audi0 · 28th August 2010, 07:16 AM

I wonder if one of you knowledgeable gents would help me with this query; Is adding I2S to a TDA1543 DAC as simple as tapping into the Data, WS and BCK between the receiver and DAC chips, or am I missing something?

Bill Fuss · 29th August 2010, 12:10 PM

If you are asking, can I use an I2S feed to the dac chip instead of the receiver chip, then yes, but don't try cables for the connection. Keep the wires as short as possible, a few inches is OK.

audi0 · 30th August 2010, 06:52 AM

Many thanks Bill, I am planning to switch (probably with relays) between the receiver chip and I2S inputs. Yes the leads will be very short <50mm

cheers.. Steve

Bill Fuss · 30th August 2010, 10:34 AM

I have to get nosey, what are you building? I built a Redbook CD player with an old Magnavox CDM4 player and a Chinese upsampling dac board with outstanding results.

audi0 · 30th August 2010, 11:11 AM

Hi Bill, after reading the "Do Audiophiles want a stand alone high end HDD source?" thread, I thought that I would purchase a WD Mini off of ebay and do the I2S conversion suggested by Erin. Do Audiophiles want a stand alone high end HDD source?
I thought I would build a linear power supply (easier bit) and a daughter board for the reciever chip and relays etc., as I would still like the option of an external SPDIF source as well. Sound OK?

Bill Fuss · 30th August 2010, 12:43 PM

Sounds great. You also have the option of using SS switching instead of relays. There are a number of switching ICs you could use. I was researching these a few months ago and believe they would be more stable than relays. Then my puter crashed, lost my focus. I'll see if I can resurrect some info for you.

Bill Fuss · 30th August 2010, 01:51 PM

Check out Maxim's MAX4754. Small but simple.

Google (quad spdt switching) for others.

audi0 · 31st August 2010, 07:14 AM

Thanks for the info Bill, much appreciated. Unfortunately smt and logic circuits are not my strong point!
I guess there would probably be a DIP version? I'll Google it, but I'm not not sure how to switch with logic?

Bill Fuss · 31st August 2010, 03:05 PM

I would imagine someone made them in dip size. Really, they operate just like a relay. One is NC and one is NO, you just switch the power to it on and off with a toggle or whatever.

Bill Fuss · 31st August 2010, 03:26 PM

Vishay DG333A. Runs on 5v, 20 pin dip. Just power the V+ with 5v and the 4 in pins with 5v through a limiting resistor and you are in business.

28th August 2010, 07:16 AM	#1
audi0 diyAudio Member Join Date: May 2009 Location: 37.34 degrees South Blog Entries: 5	I2S query I wonder if one of you knowledgeable gents would help me with this query; Is adding I2S to a TDA1543 DAC as simple as tapping into the Data, WS and BCK between the receiver and DAC chips, or am I missing something?

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
query	Professor smith	Multi-Way	2	5th May 2009 01:47 AM
Left-justified I2S to Philips I2S Converter	curva	Digital Line Level	23	19th February 2009 01:50 PM
PCM2707 -> I2S -> PCM1794 clocking query	rja	Digital Source	9	4th June 2007 09:21 AM
Direct Wiring a DDDAC USB-->I2S to a P3A DAC I2S DIN input	dkj7a	Digital Source	1	26th March 2006 05:46 PM
I2S socket query	kittaylor	Digital Source	3	27th April 2004 12:46 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

29th August 2010, 12:10 PM	#2
Bill Fuss RIP Join Date: Oct 2005 Location: Central Florida	If you are asking, can I use an I2S feed to the dac chip instead of the receiver chip, then yes, but don't try cables for the connection. Keep the wires as short as possible, a few inches is OK.

30th August 2010, 06:52 AM	#3
audi0 diyAudio Member Join Date: May 2009 Location: 37.34 degrees South Blog Entries: 5	Many thanks Bill, I am planning to switch (probably with relays) between the receiver chip and I2S inputs. Yes the leads will be very short <50mm cheers.. Steve

30th August 2010, 10:34 AM	#4
Bill Fuss RIP Join Date: Oct 2005 Location: Central Florida	I have to get nosey, what are you building? I built a Redbook CD player with an old Magnavox CDM4 player and a Chinese upsampling dac board with outstanding results.

30th August 2010, 11:11 AM	#5
audi0 diyAudio Member Join Date: May 2009 Location: 37.34 degrees South Blog Entries: 5	Hi Bill, after reading the "Do Audiophiles want a stand alone high end HDD source?" thread, I thought that I would purchase a WD Mini off of ebay and do the I2S conversion suggested by Erin. Do Audiophiles want a stand alone high end HDD source? I thought I would build a linear power supply (easier bit) and a daughter board for the reciever chip and relays etc., as I would still like the option of an external SPDIF source as well. Sound OK?

30th August 2010, 12:43 PM	#6
Bill Fuss RIP Join Date: Oct 2005 Location: Central Florida	Sounds great. You also have the option of using SS switching instead of relays. There are a number of switching ICs you could use. I was researching these a few months ago and believe they would be more stable than relays. Then my puter crashed, lost my focus. I'll see if I can resurrect some info for you.

30th August 2010, 01:51 PM	#7
Bill Fuss RIP Join Date: Oct 2005 Location: Central Florida	Check out Maxim's MAX4754. Small but simple. Google (quad spdt switching) for others.

31st August 2010, 07:14 AM	#8
audi0 diyAudio Member Join Date: May 2009 Location: 37.34 degrees South Blog Entries: 5	Thanks for the info Bill, much appreciated. Unfortunately smt and logic circuits are not my strong point! I guess there would probably be a DIP version? I'll Google it, but I'm not not sure how to switch with logic?

31st August 2010, 03:05 PM	#9
Bill Fuss RIP Join Date: Oct 2005 Location: Central Florida	I would imagine someone made them in dip size. Really, they operate just like a relay. One is NC and one is NO, you just switch the power to it on and off with a toggle or whatever.

31st August 2010, 03:26 PM	#10
Bill Fuss RIP Join Date: Oct 2005 Location: Central Florida	Vishay DG333A. Runs on 5v, 20 pin dip. Just power the V+ with 5v and the 4 in pins with 5v through a limiting resistor and you are in business.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)