Re: FW
On the Buffalo that firmware lives in a PIC microcontroller. The DAC itself only has registers, not user programmable firmware so to speak. 🙂
The firmware we use already sets those registers correctly, so we do not require an equivalent of the demo board update. 🙂
nagaesan said:
On the Buffalo that firmware lives in a PIC microcontroller. The DAC itself only has registers, not user programmable firmware so to speak. 🙂
The firmware we use already sets those registers correctly, so we do not require an equivalent of the demo board update. 🙂
Re: No21 and No22 pin of ES9008S-IC chip
Correct. firmware lives in the 24LC128 and PIC12F629, not in the ES9008.
nagaesan said:
Correct. firmware lives in the 24LC128 and PIC12F629, not in the ES9008.
>there is some memory area
Oh I'm sorry, DAC itself only has registers.
By the way, how does it set "Automute Controls" function of buffalo DAC?
The default setting of ES9008S is Automute Time is 85.32ms, Automute Threshold is @ -104dB.
Does buffalo DAC is using Automute function?
Oh I'm sorry, DAC itself only has registers.
By the way, how does it set "Automute Controls" function of buffalo DAC?
The default setting of ES9008S is Automute Time is 85.32ms, Automute Threshold is @ -104dB.
Does buffalo DAC is using Automute function?
Automute
>>Does buffalo DAC is using Automute function?
> We disable automute.
It's very happy. I felt relieved.
>>Does buffalo DAC is using Automute function?
> We disable automute.
It's very happy. I felt relieved.
sabre8_noAM_SPDIF_Pol0Deg.iic
The new firmware does not seem to be necessary for buffalo DAC.
But ES9008S eva-board need sabre8_noAM_SPDIF_Pol0Deg.iic.
The new firmware does not seem to be necessary for buffalo DAC.
But ES9008S eva-board need sabre8_noAM_SPDIF_Pol0Deg.iic.
Re: sabre8_noAM_SPDIF_Pol0Deg.iic
I sent you an email yesterday, with no reply. Did you get it?
nagaesan said:
I sent you an email yesterday, with no reply. Did you get it?
New Sabre DAC
Russ/Brian
I'm WAY new to DIY construction, and have a dumb question (sorry, only kind I can ask at this point).
I guess that the existing Buffalo board designs are built to work with the Sabre DAC chip that's already out. So that if I were to purchase your currently "commercially available" Buffalo Board with the existing DAC, I'd have to purchase a new Board (once it's been designed, etc.) to go with the new iteration of Sabre DAC. Is that correct?
And, I would also wager that in the process of designing the new boards, you're in deep enough to have no time frame for when the new Buffalo (?) is going to be available.
In anticipation of your gracious reply, Thanks!
Larry
Russ/Brian
I'm WAY new to DIY construction, and have a dumb question (sorry, only kind I can ask at this point).
I guess that the existing Buffalo board designs are built to work with the Sabre DAC chip that's already out. So that if I were to purchase your currently "commercially available" Buffalo Board with the existing DAC, I'd have to purchase a new Board (once it's been designed, etc.) to go with the new iteration of Sabre DAC. Is that correct?
And, I would also wager that in the process of designing the new boards, you're in deep enough to have no time frame for when the new Buffalo (?) is going to be available.
In anticipation of your gracious reply, Thanks!
Larry
I got e-mai from kooda-san
kooda wrote;
>I sent you an email yesterday, with no reply. Did you get it?
Yes, but when I got your e-mail, JAPAN was midnight.
Sorry to reply.
kooda wrote;
>I sent you an email yesterday, with no reply. Did you get it?
Yes, but when I got your e-mail, JAPAN was midnight.
Sorry to reply.
Re: New Sabre DAC
Hi Larry,
1) Correct.
2) We are aiming to get a new design out as soon as practical, but our schedule is dictated by some outside factors beyond our control, so the best we can do is keep our site updated with news about coming attractions.
Cheers!
Russ
Muser said:Russ/Brian
1) I guess that the existing Buffalo board designs are built to work with the Sabre DAC chip that's already out. So that if I were to purchase your currently "commercially available" Buffalo Board with the existing DAC, I'd have to purchase a new Board (once it's been designed, etc.) to go with the new iteration of Sabre DAC. Is that correct?
2) And, I would also wager that in the process of designing the new boards, you're in deep enough to have no time frame for when the new Buffalo (?) is going to be available.
In anticipation of your gracious reply, Thanks!
Larry
Hi Larry,
1) Correct.
2) We are aiming to get a new design out as soon as practical, but our schedule is dictated by some outside factors beyond our control, so the best we can do is keep our site updated with news about coming attractions.
Cheers!
Russ
sachi said:
not until we test them first.
[EDIT]: I just realized I posted this in the wrong thread. Sorry about that.
Counterpoint boards
Hello, may I ask a question?
Does the Counterpoint board have active type(OP-AMP) of I/V conversion stage?
Hello, may I ask a question?
Does the Counterpoint board have active type(OP-AMP) of I/V conversion stage?
Voltage output from ES9008S
I saw the close up photo, it seems like voltage out from ES9008S.
DIY people in this forum, do not like OP-AMP I/V stage?
I saw the close up photo, it seems like voltage out from ES9008S.
DIY people in this forum, do not like OP-AMP I/V stage?
Counter point DAC
I am sorry, the Counter point DAC have discrete active I/V stage, and this is not ES9008S?
I am sorry, the Counter point DAC have discrete active I/V stage, and this is not ES9008S?
Re: Counter point DAC
The Counterpoint is indeed intended for the ESS9008/ES9018, but it would work equally well with any current output DAC. It is meant specifically our Buffalo DAC. 🙂 I am not sure how you would make it work with the EVAL board as you would need to exclude the on-board I/V stage. Probably would require some board surgery. 🙂
There is a quad opamp on the board, but it is only used to set bias voltages and act as an integrator. It does not do the actual I/V conversion.
It could be called a type of fully symmetrical folded cascode current conveyor design, but not a classic current conveyor. I am really not sure how to classify it.
One cool feature is that the output can be balanced even if you use a single ended current source, but you can take only one end and use it single ended with almost no THD penalty.
I can't wait to fire it up and give it a rip outside the simulator. The earlier prototype worked very well. So hopefully the testing goes ok.
Cheers!
Russ
nagaesan said:
The Counterpoint is indeed intended for the ESS9008/ES9018, but it would work equally well with any current output DAC. It is meant specifically our Buffalo DAC. 🙂 I am not sure how you would make it work with the EVAL board as you would need to exclude the on-board I/V stage. Probably would require some board surgery. 🙂
There is a quad opamp on the board, but it is only used to set bias voltages and act as an integrator. It does not do the actual I/V conversion.
It could be called a type of fully symmetrical folded cascode current conveyor design, but not a classic current conveyor. I am really not sure how to classify it.
One cool feature is that the output can be balanced even if you use a single ended current source, but you can take only one end and use it single ended with almost no THD penalty.
I can't wait to fire it up and give it a rip outside the simulator. The earlier prototype worked very well. So hopefully the testing goes ok.
Cheers!
Russ