Re: [ECOS] Ethernet chips

["Slawek" <sgp at telsatgp dot com dot pl>]

I have found the second chip.
Maybe it's the one Laurent was talking about - Davicom, DM9000.

It's not supported by eCos so far, but well...


I have selected the SMSC device for the project.
Now I'm waiting for it to be delivered.

I hope enabling SMSC driver to work on EB40A will not cause any major problems.


Thanks for the suggestion, QiangHuang, but I don't need an FPGA here, and using external FLASH and RAM would be required in this design. It does not eliminate the need for external ethernet MAC as well (it only includes it on the evaluation board).

It's just easier to use Atmel ARM AT91FR40162 which has enough FLASH and enough RAM for the project. It doesn't have ethernet controller, it doesn't have I2C built-it and it doesn't have low power Real Time Clock with external 32 kHz clock. It doesn't have some analog elements which as far as I know aren't integrated with any chip.

So I'll have to use some chips together with microcontroller but it's ok, because I know all of those (excluding LAN91C111, but it has driver already available) so I'm not expecting any major problems.


-- 
Slawek Piotrowski


----- Original Message ----- 
From: "QiangHuang" <jameshq@liverpool.ac.uk>
To: "Slawek" <sgp@telsatgp.com.pl>
Cc: "Ecos-Discuss" <ecos-discuss@sources.redhat.com>
Sent: Monday, July 07, 2003 1:11 PM
Subject: RE: [ECOS] Ethernet chips


> Maybe you can have a look of  the Altera EPXA1 development board.
> 
> -----Original Message-----
> From: ecos-discuss-owner@sources.redhat.com
> [mailto:ecos-discuss-owner@sources.redhat.com]On Behalf Of Slawek
> Sent: 07 July 2003 10:27
> To: Laurent GONZALEZ; ecos-discuss@sources.redhat.com
> Subject: Re: [ECOS] Ethernet chips
> 
> 
> 
> The device doesn't need high throughput, but being able to work in 100Base-T
> is a requirement.
> 
> The reason for that are HUBs which are really dropping performance whenever
> someone connects any 10Base-T device to them.
> 
> AT91RM9200 doesn't have enough FLASH nor RAM.
> We're going to use AT91FR40162, unless of course somebody shows a device
> with that much of memory and ethernet built it.
> 
> A board with SMSC LAN91C111 would be a nice thing to have, but giving that
> we had to wait for eb40a for about 6 weeks and that we need to have some
> external devices connected to the processor anyway, it would probably be
> easier to just include LAN91C111 between them.
> 
> Thanks for the hint that there is another chip. I haven't found any so far.
> It's always good to have an alternative when it comes to negotiating prices
> ;)
> 
> 
> --
> Slawek Piotrowski
> 
> ----- Original Message -----
> From: "Laurent GONZALEZ" <laurent.gonzalez@silicomp.fr>
> To: <ecos-discuss@sources.redhat.com>; "Slawek" <sgp@telsatgp.com.pl>
> Sent: Monday, July 07, 2003 10:49 AM
> Subject: Re: [ECOS] Ethernet chips
> 
> 
> >
> > I know a board with SMSC LAN91C111 ( we are partners with ATMEL at91 team,
> and they already showed us such a board ). This board uses an AT91M55800A.
> > I know that there is another corean chip (don't remember exactly the name)
> that is a non-PCI 10/100 ethernet chip.
> >
> > Will you explain your need for ethernet connectivity. Are you sure that
> you really need 100BT. I'am afraid that the throuput will not be what you
> expect even for 100 Mbits connection. What about using a processor with an
> integrated ethernet device such AT91RM9200 ?
> >
> > regards,
> >
> >
> > On Mon, 7 Jul 2003 10:14:21 +0200
> > "Slawek" <sgp@telsatgp.com.pl> wrote:
> >
> > >
> > > I'm searching for some 10/100 ethernet MAC/PHY chip supported by eCos
> that doesn't need to be connected by PCI.
> > >
> > > After a quick look around I've found SMSC LAN91C111.
> > >
> > > Are there any other such chips supported?
> >
> > --
> > GONZALEZ Laurent
> > Silicomp Research Institute
> > Tel: 04 76 41 66 98
> >
> > --
> > Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> > and search the list archive: http://sources.redhat.com/ml/ecos-discuss
> >
> >
> 
> 
> --
> Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> and search the list archive: http://sources.redhat.com/ml/ecos-discuss
> 
> 
>


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