Hi, I'm new working with DSPs of the Analog Devices, I have an ADSP 21262.
How can I load a program in the chip? Do I need an extra circuitry to do this? I
have an Sigma Delta Analog Digital Converter AD7716. I planning use this AD7716,
but how can I interfacing dthe AD7716 with the ADSP 21262? If you can send me an
circuit, It woul be better.
Thanks
ing_jpu
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ADSP 21262
Started by ●October 1, 2009
Reply by ●October 1, 20092009-10-01
Look at the EZ-kit for the 2126x processors, otherwise you need some
kind of flash it can boot from, or you can hook up a host computer.
Read the manual on booting, and then pick which will work best for you.
Patience, persistence, truth,
Dr. mike
On Thu, 1 Oct 2009, Juan Pablo Ugarte wrote:
> Hi, I'm new working with DSPs of the Analog Devices, I have an ADSP 21262. How can I load a program in the chip? Do I need an extra circuitry to do this? I have an Sigma Delta Analog Digital Converter AD7716. I planning use this AD7716, but how can I interfacing dthe AD7716 with the ADSP 21262? If you can send me an circuit, It woul be better.
> Thanks
> ing_jpu
> ____________________________________________________________________________________
> Obt la mejor experiencia en la web!
> Descarga gratis el nuevo Internet Explorer 8.
> http://downloads.yahoo.com/ieak8/?l=e1
kind of flash it can boot from, or you can hook up a host computer.
Read the manual on booting, and then pick which will work best for you.
Patience, persistence, truth,
Dr. mike
On Thu, 1 Oct 2009, Juan Pablo Ugarte wrote:
> Hi, I'm new working with DSPs of the Analog Devices, I have an ADSP 21262. How can I load a program in the chip? Do I need an extra circuitry to do this? I have an Sigma Delta Analog Digital Converter AD7716. I planning use this AD7716, but how can I interfacing dthe AD7716 with the ADSP 21262? If you can send me an circuit, It woul be better.
> Thanks
> ing_jpu
> ____________________________________________________________________________________
> Obt la mejor experiencia en la web!
> Descarga gratis el nuevo Internet Explorer 8.
> http://downloads.yahoo.com/ieak8/?l=e1
Reply by ●November 17, 20092009-11-17
Thank you for your answer Dr. Mike. I have the Visual DSP and I choose boot from
my computer, but I don't know how make the connections. I read in the
peripherals manual that, in SPI slave mode, I can make the booting but how I
connect the ADSP 21262 with the computer. Furthermore, I would use the DAI pins
butm after boot the program, I need the DAI pins interface the ADSP 21262 with
another ICs.
Reply by ●November 17, 20092009-11-17
On Mon, 16 Nov 2009, i...@yahoo.com wrote:
> Thank you for your answer Dr. Mike. I have the Visual DSP and I choose
> boot from my computer, but I don't know how make the connections. I read
>in the peripherals manual that, in SPI slave mode, I can make the booting
>but how I connect the ADSP 21262 with the computer. Furthermore, I would
>use the DAI pins butm after boot the program, I need the DAI pins
>interface the ADSP 21262 with another ICs.
You need some way to convert the computer connection into an SPI
connection. You can bit bang it with the parallel port, or you can use
the serial port to a pic or other microprocessor, or you can use an FTDI
chip that converts USB to parallel and bit bang that way.
To switch pin functions you have several choices. An easy way is to use a
mux. During boot, the processor puts out a control line to tell the
outside world it wants to boot, and when it is done it flips that line.
If you use that to control the mux, then it can switch between spi lines
during boot and other periferals during operation.
Instead of spi boot, look into host boot. That is a parallel port. If
you can use the parallel port on the PC, it might be easier than bit
banging spi signals.
Patience, persistence, truth,
Dr. mike
> Thank you for your answer Dr. Mike. I have the Visual DSP and I choose
> boot from my computer, but I don't know how make the connections. I read
>in the peripherals manual that, in SPI slave mode, I can make the booting
>but how I connect the ADSP 21262 with the computer. Furthermore, I would
>use the DAI pins butm after boot the program, I need the DAI pins
>interface the ADSP 21262 with another ICs.
You need some way to convert the computer connection into an SPI
connection. You can bit bang it with the parallel port, or you can use
the serial port to a pic or other microprocessor, or you can use an FTDI
chip that converts USB to parallel and bit bang that way.
To switch pin functions you have several choices. An easy way is to use a
mux. During boot, the processor puts out a control line to tell the
outside world it wants to boot, and when it is done it flips that line.
If you use that to control the mux, then it can switch between spi lines
during boot and other periferals during operation.
Instead of spi boot, look into host boot. That is a parallel port. If
you can use the parallel port on the PC, it might be easier than bit
banging spi signals.
Patience, persistence, truth,
Dr. mike
