Tda1540p Nos Dac

kosmolesch · 2nd March 2007, 08:49 PM

Unfortunately my philips cd player has DIED (
So i decided to build a dac from it )?
one thing is not absolutely defineble - how to connect
2 tda1540p to cs8416
I dont want to use tda7000 or tda7300 in signal path (
So it is possible to connect cs8416 24 bit i2s out and tda1540 directly?
I think TDA1540P is worth such brainfuck ; )

TimA · 1st July 2007, 11:03 AM

I'd like to do a similar thing with a TDA1540P and a CS8414, so I have a similar question; will the TDA1540P accept a 16 bit input signal?

Tim.

rfbrw · 1st July 2007, 05:06 PM

Why not just give yourself a Prince Albert, it will be a lot less painful if you are in the unfortunate position of having to ask if or how.

TimA · 1st July 2007, 06:03 PM

I appreciate that there is a need for logic circuitry between the CS8414 and TDA1540P in order to separate L/R channels, not a problem, my question relates purely to whether a 14 bit DAC can accept a 16 bit signal.

Tim.

rfbrw · 1st July 2007, 07:32 PM

Only if you turn it into a 14 bit signal.

QSerraTico_Tico · 5th September 2007, 08:00 AM

Use the TDA1541A and don't throw away two bits.

oshifis · 5th September 2007, 03:39 PM

The MSB goes into the shift register first. If you clock it into the register with 16 pulses, the two most significant bits will overflow. But if you clock in with 14 pulses, starting at bit 3 and stopping at bit 16, the two least significant bits will not be shifted in and you will be alright. Best if you have a look at the SAA7000 timing diagram (Fig. 5). It is easy to do NOS with SAA7000, bypassing the SAA7030.

rfbrw · 5th September 2007, 05:06 PM

Quote:

Originally posted by oshifis
It is easy to do NOS with SAA7000, bypassing the SAA7030.

Since the the '7000 can be configured for 14 bit output data , that is no great surprise. However, the OP was referring to the CS8416, a very different prospect.

2nd March 2007, 08:49 PM	#1
kosmolesch diyAudio Member Join Date: Jan 2007	Tda1540p Nos Dac Unfortunately my philips cd player has DIED ( So i decided to build a dac from it )? one thing is not absolutely defineble - how to connect 2 tda1540p to cs8416 I dont want to use tda7000 or tda7300 in signal path ( So it is possible to connect cs8416 24 bit i2s out and tda1540 directly? I think TDA1540P is worth such brainfuck ; )

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1st July 2007, 11:03 AM	#2
TimA diyAudio Member Join Date: Nov 2002 Location: UK	I'd like to do a similar thing with a TDA1540P and a CS8414, so I have a similar question; will the TDA1540P accept a 16 bit input signal? Tim.

1st July 2007, 05:06 PM	#3
rfbrw diyAudio Member Join Date: Oct 2001 Location: .	Why not just give yourself a Prince Albert, it will be a lot less painful if you are in the unfortunate position of having to ask if or how.

1st July 2007, 06:03 PM	#4
TimA diyAudio Member Join Date: Nov 2002 Location: UK	I appreciate that there is a need for logic circuitry between the CS8414 and TDA1540P in order to separate L/R channels, not a problem, my question relates purely to whether a 14 bit DAC can accept a 16 bit signal. Tim.

1st July 2007, 07:32 PM	#5
rfbrw diyAudio Member Join Date: Oct 2001 Location: .	Only if you turn it into a 14 bit signal.

5th September 2007, 08:00 AM	#6
QSerraTico_Tico diyAudio Member Join Date: Oct 2004	Use the TDA1541A and don't throw away two bits.

5th September 2007, 03:39 PM	#7
oshifis diyAudio Member Join Date: Mar 2004 Location: Budapest, Hungary	The MSB goes into the shift register first. If you clock it into the register with 16 pulses, the two most significant bits will overflow. But if you clock in with 14 pulses, starting at bit 3 and stopping at bit 16, the two least significant bits will not be shifted in and you will be alright. Best if you have a look at the SAA7000 timing diagram (Fig. 5). It is easy to do NOS with SAA7000, bypassing the SAA7030.