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From: An Schwob in USA on 14 Oct 2009 00:48
On Oct 13, 6:00 pm, "rickee" <rickeew...(a)gmail.com> wrote:
> >On Oct 12, 2:41=A0am, "rickee" <rickeew...(a)gmail.com> wrote:
> >> Requirement for our Audio system:
> >> MP3 decode/WMA decode
> >> CD/MP3 CD/WMA CD decode including servo control (it should be DSP)
> >> USB/SD interface
> >> rich interface just like UART/IIC/GPIO for our externtion.
>
> > Why do you need arm for that ? Look at what everyone else uses for
> >the same  product - most portable Audio systems and use custom power-
> >optimised MP3 decode , and once you have that, an 8 bit core is
> >enough.
> > See the series for one example.
>
> >-jg
>
> Yes, it's easy to find the MCU with MP3 decode even including USB,
> but we need CD Servo decode  as well. We mainly coorperate with
> TOSHIBA and SAMSUNG, but the supply is not stable, and the software
> is not flexiable, so we would like to make one for ourselves.
> I know Atmel AT89C51SNDx , any other suggesttion?          
>
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Come on guys. An own ARM core for 100k / year and a target price of
$3 / system you are kidding right? The license is out of your league.
What is your solution? Does it include the memory? It sounds like your
solution now is a micro without internal memory. You need to look at
system cost and let others know what is included in the system to make
the best recommendations.

@Frank, NXP does not use the M1, NXP uses the M0 and the M3.
Difference basically being the performance at the same clock speed and
the size of the core itself. The LPC1700 is based on the M3.

@ rickee, the 89C51 is not going to cut it for your re
From: vinnie on 16 Oct 2009 09:02
>Please tell me what is the cheapest ARM with my request ip.
>Our company would like to change current audio application
>to embedded system.
>after my researching, only 2 way to realize, one is made ASIC Chip
>(request very long develop time,and huge investment), another is
>buy ARM with specify IP Core.
>
>Requirement for our Audio system:
>MP3 decode/WMA decode
>CD/MP3 CD/WMA CD decode including servo control (it should be DSP)
>USB/SD interface
>rich interface just like UART/IIC/GPIO for our externtion.

You may want to approach this from another angle. Try looking at reference
designs based around an embedded OS like ThreadX.

http://www.rtos.com/

Ports and reference designs are available for many chip suppliers like
Renesas and others.

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