ESS Sabre Reference DAC (8-channel)

[Zoran]

Yes I have datas
But I am talking about the ES9008 model...
I know I need the PIC to manage registers
That is why i am asking for direction in that way
first is to set ADDR pin to gnd for L (0x90 chip address) and to +3.3Vdd for R (0x92 chip address)
EVEN this info is NOT clearly presented in the datas of ES9008
There is no word about mono operation in PDF of ES9008
as I know?
Maybe I am wrong, that is why i want to share this...
.
If You know how to set ES9008 please post this

[Zoran]

Of course I have Standard I2S L/R (ballanced output) also
so I think to use this bus

[RayCtech]

Originally Posted by Zoran

Yes I have datas
But I am talking about the ES9008 model...
I know I need the PIC to manage registers
That is why i am asking for direction in that way
first is to set ADDR pin to gnd for L (0x90 chip address) and to +3.3Vdd for R (0x92 chip address)
EVEN this info is NOT clearly presented in the datas of ES9008
There is no word about mono operation in PDF of ES9008
as I know?
Maybe I am wrong, that is why i want to share this...
.
If You know how to set ES9008 please post this

Not much are clearly presented in the Sabre data sheets.
Thus I have made my own data sheet and added those functions that are undocumented, those explained by Dustin. And I have also added those I have figured out by test and trial.

However the ES9008 and ES9018 are pin compatible and the ES9018 can be run in ES9008 mode. The ES9018 had some fixes that was not completely correct in the ES9008 (have still a lot of ES9008 chips I did not solder due to these "bugs") the SPDIF mux was added and I think the mono mode also was one of the added features of the ES9018.

But as you have I2S the splitter you can run dual mono anyway.

[Zoran]

Yes the 2 of the same ES9008 dac boxes are running already in dual mono
BUT i would like to get rid of the hardware logic L/L R/R
and employ classic I2S bus
.
I doubt that the people from ESS tested the dac with splitted I2S really?
And after that mark the results?
It is not lightly at all, for me?
.
So there must be a way to accomplish this with standard I2S, but
managing some registers to acheive this?

[Zoran]

Ray I answered at Your PM, but I dont have it in my list?

[Tazmaniac]

Simple : there is no native MONO mode on 9008, this is a 9018 addition.

[Zoran]

I think opposite, sorry
the great probability that mono mode is present.
BUT ESS didnt explained in the datas for ES9008 model?
ONLY the mesurements info that confirmed that it is tested in mono mode...
...
Other Qiestion is what is the mono mode exactly was?
there is a few ways to acheive this
...
1. mono mode - when I2S L/R present on the input
each dac converting only one channel, while during the other chanel converting by other dac, Resting, for the one half of L/R latch, or WS.
that is most lightly for new model and for 9008 if it comes that it is possibile to run
...
2. Spitted I2S into 2 lines L/L + R/R going into 2 x DAC chips, chips are occupied all of the time just like playng 2 x standard I2S, exept they dont know it...ha...ha
...
3. Splitted lines with zeroes L/0 + 0/R, simulated stopped sys clk opperation
...
So nothing of that was not explained clearly
I can conclude that ES9008 have possibility to run in dual mono mode
which one I can not tell?
And RayCtech also confirmed that.
Probably the one with a standard I2S L/R
but set internally via PIC controlling the registers...
?

[RayCtech]

Originally Posted by Zoran

And RayCtech also confirmed that.

When using I2S L/L + R/R

[Tazmaniac]

Ok, go through old Dustin Forman post and you will get your answer.
But perhaps it did not know the ES9018 very well ....
Mono mode is just a shortcut to bypass your L+L/R+R or what ever you want I2S reformatting.
I dont't understand your interrogation about I2S clocking VS DAC conversion. The conversion is done on frame boundary. When the DAC look for L or R or L+R samples, sample are there with no time dependent ordering, it is the job of the I2S receiver stage.

[Zoran]

Originally Posted by RayCtech

When using I2S L/L + R/R

.
But Is that only way?
Because it is just an "external" way
forcing ES9008 to play channels independently?