First of all,
In NOS mode, TDA1541a can only accept I2s format and when you see the data sheet of 9001, the 16bit format is only in Sony format (right just.) I2s is not the same to Sony format so you cannot switch 9001 to 16bit-Sony format and feed the data to Tda1541a which is in I2S.
If TDA1541A is not in NOS and the DAC has the filter (i.e. SAA7220) in-between receiver and the DA chip (means TDA1541A), 9001 can be used in this case.
by the way, you can switch 9001a to i2S format (High in FMT1 and 0) and connect it to TDA1541a. The dac will sound. You may try.
Best Regards,
Leo
In NOS mode, TDA1541a can only accept I2s format and when you see the data sheet of 9001, the 16bit format is only in Sony format (right just.) I2s is not the same to Sony format so you cannot switch 9001 to 16bit-Sony format and feed the data to Tda1541a which is in I2S.
If TDA1541A is not in NOS and the DAC has the filter (i.e. SAA7220) in-between receiver and the DA chip (means TDA1541A), 9001 can be used in this case.
by the way, you can switch 9001a to i2S format (High in FMT1 and 0) and connect it to TDA1541a. The dac will sound. You may try.
Best Regards,
Leo
hi,
TDA1541 will accept the first 16 bit of data from the I2S format bit stream which is in 24bit. It means 4 bits will be lost (the last 4 LSB). Some say 9001 is backward compatible to older I2S 18bit format but I doubt.
You can connect the 9001 to 1541a by switching its to i2s mode. The DAC will sound but with lower volume due to the lost of the last 4 bits.
Hope this help. I just move to Toronto. are you in Toronto?
Leo
TDA1541 will accept the first 16 bit of data from the I2S format bit stream which is in 24bit. It means 4 bits will be lost (the last 4 LSB). Some say 9001 is backward compatible to older I2S 18bit format but I doubt.
You can connect the 9001 to 1541a by switching its to i2s mode. The DAC will sound but with lower volume due to the lost of the last 4 bits.
Hope this help. I just move to Toronto. are you in Toronto?
Leo
LeoJar said:hi,
TDA1541 will accept the first 16 bit of data from the I2S format bit stream which is in 24bit. It means 4 bits will be lost (the last 4 LSB). Some say 9001 is backward compatible to older I2S 18bit format but I doubt.
You can connect the 9001 to 1541a by switching its to i2s mode. The DAC will sound but with lower volume due to the lost of the last 4 bits.
Hope this help. I just move to Toronto. are you in Toronto?
Leo
Hello Leo
Not in Toronto but I did live near Ottawa 10 years ago and now I live in Quebec laurentides mountain.
Thank
Bye
Gaetan
Hello
How about using this Sony to Philips I2S Format Conversion circuit ?
http://www.diyaudio.com/forums/showthread.php?postid=297035#post297035
Thank
Bye
Gaetan
How about using this Sony to Philips I2S Format Conversion circuit ?
http://www.diyaudio.com/forums/showthread.php?postid=297035#post297035
Thank
Bye
Gaetan
In this thread on a chinese bbs
http://bbs.hifidiy.net/viewthread.php?tid=136802&extra=page=1
you can find on the first post a link to a pdf with a schematic for a dac with dir9001 and tda1543, maybe could help you.
ciao
andrea
http://bbs.hifidiy.net/viewthread.php?tid=136802&extra=page=1
you can find on the first post a link to a pdf with a schematic for a dac with dir9001 and tda1543, maybe could help you.
ciao
andrea
Repetita iuvant.... or not?
As said before there is no need of glue logic.
Do a search on the thread where spencer sells his DIR9001->CS8412 adapter, it's all there.
Probably you only have to set I2S mode, even if it's at 24 bit.
The TDA will just ignore the lower bits.
Ciao
Andrea
As said before there is no need of glue logic.
Do a search on the thread where spencer sells his DIR9001->CS8412 adapter, it's all there.
Probably you only have to set I2S mode, even if it's at 24 bit.
The TDA will just ignore the lower bits.
Ciao
Andrea
Hello
Andypairo and Leo
Andypairo said "TDA will just ignore the lower bits..."
Leo said "It means 4 bits will be lost (the last 4 LSB). "
But the last significant bit are important, it would lost important low level and soundstage informations ?
Looking at a schematic of spencer DIR9001->CS8412 adapter, it seem that we still need to use the CS8412.
Anbello
I will look at this chinese bbs.
Thank to all
Bye
Gaetan
Andypairo and Leo
Andypairo said "TDA will just ignore the lower bits..."
Leo said "It means 4 bits will be lost (the last 4 LSB). "
But the last significant bit are important, it would lost important low level and soundstage informations ?
Looking at a schematic of spencer DIR9001->CS8412 adapter, it seem that we still need to use the CS8412.
Anbello
I will look at this chinese bbs.
Thank to all
Bye
Gaetan
Hi,
since the TDA is a 16 bit converter it just ignores the bits from 17 to 24.
But, if the source is a 16 bit CD, those bits are all zeroes!
http://www.diyaudio.com/forums/showthread.php?postid=1340350
http://www.diyaudio.com/forums/showthread.php?postid=1399092#post1399092
http://www.diyaudio.com/forums/showthread.php?postid=1411151#post1411151
Ciao
Andrea
since the TDA is a 16 bit converter it just ignores the bits from 17 to 24.
But, if the source is a 16 bit CD, those bits are all zeroes!
http://www.diyaudio.com/forums/showthread.php?postid=1340350
http://www.diyaudio.com/forums/showthread.php?postid=1399092#post1399092
http://www.diyaudio.com/forums/showthread.php?postid=1411151#post1411151
Ciao
Andrea
Here's the schematic for the DIR9001/TDA1543 DAC that anbello referred to: http://www.pic16.com/soft/TDA1543SCH.pdf
To use the TDA1541A instead of the 1543, the connections to pins 1 and 2 have to be interchanged and connection to pin 3 remains the same. It works - I've had it playing.
John
To use the TDA1541A instead of the 1543, the connections to pins 1 and 2 have to be interchanged and connection to pin 3 remains the same. It works - I've had it playing.
John
gaetan8888 said:
Looking at a schematic of spencer DIR9001->CS8412 adapter, it seem that we still need to use the CS8412.
The CS8412 isn't a physical device on the adapter. The CS8412 schematic symbol is only used get the correct pin sequence and footprint for the adapter to work as a plug in replacement for a CS8412....
jonners said:Here's the schematic for the DIR9001/TDA1543 DAC that anbello referred to: http://www.pic16.com/soft/TDA1543SCH.pdf
To use the TDA1541A instead of the 1543, the connections to pins 1 and 2 have to be interchanged and connection to pin 3 remains the same. It works - I've had it playing.
John
Hello John
What is the K1 - K3 switch in that schematic ?
Thank
Bye
Gaetan
gaetan8888 said:
What is the K1 - K3 switch in that schematic ?
Hello Gaetan -
It's just for switching between the two inputs.
John
Here's the schematic for the DIR9001/TDA1543 DAC that anbello referred to: http://www.pic16.com/soft/TDA1543SCH.pdf
To use the TDA1541A instead of the 1543, the connections to pins 1 and 2 have to be interchanged and connection to pin 3 remains the same. It works - I've had it playing.
John
Hello
Using only coax SPDIF input, do I need to keep the 74HC00 in that circuit, could I connect the coax SPDIF input directly to RXIN of the DIR9001 ?
Btw, I may add a SAA7220 with a reclock.
Thank
Bye
Gaetan
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