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Daughter card

Started by myme...@gmail.com October 11, 2011
hi guys
i wanna use both HPI(daughter card) and codec to have a control process( Error=set point-point value), but it seems that it is impossible! cuz on CPLD registers , we should change some bits to use Daughter card OR CODEC. not at a same time.( off board or on board )
Am i Right?
is there any chance to connect both signals to HPI port and reduce them?
so i don't need to use codec???!!!!
ti says that it doesn't support hpi !!

thanks.

_____________________________________
Metro-

> i wanna use both HPI(daughter card) and codec to have a
> ontrol process( Error=set point-point value), but it seems
> that it is impossible! cuz on CPLD registers , we should
> change some bits to use Daughter card OR CODEC. not at a
> same time.( off board or on board )
> Am i Right?
>
> is there any chance to connect both signals to HPI port
> and reduce them?
> so i don't need to use codec???!!!!
> ti says that it doesn't support hpi !!

I assume this is C6713 or C6416 DSK board?

The CPLD "mux" controls McBSP port interfacing. The HPI connector is always usable, regardless of McBSP settings.
Although TI doesn't have product support for this connector, you can try something like this:

http://www.educationaldsp.com/stockproduct_dsk6xxxhpi.htm

As for your queestion about "connecting both signals to HPI port and reducing them" please clarify. HPI is a
parallel, slave-only interface. McBSP is serial, either side can initiate. There are probably ways to do what you
want, but it's not clear what you want.

-Jeff

_____________________________________
yes,thank u it is C6713.
I wanna do a control project, is it possible to use mic in & line in together?
Can i just connect my simple inputs by wire to the HPI card, and don't use serial or parallel Connector???

_____________________________________
Metro-

(Please don't cut text from the thread. I had to get back to early November to find what this refers to.)

> yes,thank u it is C6713.
> I wanna do a control project, is it possible to use
> mic in & line in together?

I'm not sure... I recall the line-in is stereo (3-connector RCA jack) and the mic is in parallel with one of these.
Maybe you can get some combination to work... in any case, I strongly urge you to study the DSK 6713 schematic so you
know exactly what's going on.

> Can i just connect my simple inputs by wire to the HPI
> card, and don't use serial or parallel Connector???

I don't understand this question. By HPI card, do you mean the Educational DSP module mentioned below? If so, you
can connect any intelligent machine to HPI -- PC, server, embedded microprocessor box, FPGA, etc -- as long as you
follow correct HPI interfacing, timing and level specs. Then you have a means to talk to run-time DSP code. But
that's independent of what's happening on the codec side, which uses a serial port interface to the DSP, so maybe I
still didn't get your question.

-Jeff

--------------- Original Message --------------
Subject: Re: [c6x] Daughter card
From: "Jeff Brower"
Date: Thu, November 3, 2011 3:35 pm
To: m...@gmail.com
Cc: c...
-----------

Metro-

> i wanna use both HPI(daughter card) and codec to have a
> ontrol process( Error=set point-point value), but it seems
> that it is impossible! cuz on CPLD registers , we should
> change some bits to use Daughter card OR CODEC. not at a
> same time.( off board or on board )
> Am i Right?
>
> is there any chance to connect both signals to HPI port
> and reduce them?
> so i don't need to use codec???!!!!
> ti says that it doesn't support hpi !!

I assume this is C6713 or C6416 DSK board?

The CPLD "mux" controls McBSP port interfacing. The HPI connector is always usable, regardless of McBSP settings.
Although TI doesn't have product support for this connector, you can try something like this:

http://www.educationaldsp.com/stockproduct_dsk6xxxhpi.htm

As for your queestion about "connecting both signals to HPI port and reducing them" please clarify. HPI is a
parallel, slave-only interface. McBSP is serial, either side can initiate. There are probably ways to do what you
want, but it's not clear what you want.

-Jeff

_____________________________________