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#81216 - 10/04/2002 19:18 Re: Digital Out? [Re: eternalsun]
maczrool
pooh-bah

Registered: 13/01/2002
Posts: 1649
Loc: Louisiana, USA
I took the liberty of taking a few pictures of the area on the Empeg motherboard that I believe to contain the "I2S" pads with my aging digital camera. Attached is the best one. I believe, based on the leads from the Philips DSP that the pads are the ones in the picture named "IIS", but I'm not positive. Can anyone verify this?

What are the other pads for? It looks like there are pads for another IC. What are they for? What are the "IIS Power" pads for? And also the "ProI" pads?

Thanks,

Stu


Attachments
85054-I2S_Pads-.jpg (138 downloads)

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#81217 - 10/04/2002 22:34 Re: Digital Out? [Re: maczrool]
dewdman42
member

Registered: 13/09/2000
Posts: 186
I just want to say that I hope someone figures this out. I have an all digital hifi system in my home (Meridian) which has nothing but the finest DAC's at every speaker cone. I absolutely know that my Empeg will sound better when plugged into this system if it could feed the Meridian with direct Digital output.

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#81218 - 10/04/2002 23:15 Re: Digital Out? [Re: dewdman42]
svferris
addict

Registered: 06/11/2001
Posts: 700
Loc: San Diego, CA, USA
Mmmmm...all Meridian.

I assume they're the digital loudspeakers? My CEO has those.
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#81219 - 11/04/2002 14:22 Re: Digital Out? [Re: maczrool]
maczrool
pooh-bah

Registered: 13/01/2002
Posts: 1649
Loc: Louisiana, USA
After a little more research, it seems that indeed "IIS" and "I2S" are different names for the same thing. So at least I have found the outputs of the empeg. Now the questions is how to go from IIS to the inputs on the CS8405 chip, which needs serial data and word rate clock inputs. What circuitry is needed to interface the CS8405 with these IIS outputs?
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#81220 - 12/04/2002 10:54 Re: Digital Out? [Re: maczrool]
eternalsun
Pooh-Bah

Registered: 09/09/1999
Posts: 1721
Loc: San Jose, CA
According to Hugo,

there is a 2mm header (row of holes) on the board that has the following: ground, 3.3v, I2C clock, i2C left/right, i2C data front/rear.

Calvin

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#81221 - 12/04/2002 13:50 Re: Digital Out? [Re: eternalsun]
maczrool
pooh-bah

Registered: 13/01/2002
Posts: 1649
Loc: Louisiana, USA
In reply to:

According to Hugo,

there is a 2mm header (row of holes) on the board that has the following: ground, 3.3v, I2C clock, i2C left/right, i2C data front/rear.




Perhaps this header is the set of pads labeled IIS?
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