RE: [ethmac] Standard info.

["Illan Glasner" <iglasner@zumanetworks.com>]

22-Apr-02

   Javier Hi,

      Two small point.

Why do you think you Must have external PLL for Fast-Eth ? don;t forget it is only 25M and 40n period .

The IEEE std does cover all frame I would agree it is not always clear and easy to read but you should be able to find anything in it, just imagine what would happen if it is not explaining all frame and each company try to make her own version ...

have a nice day

   Illan



-----Original Message-----
From: Javier_Castillo_Villar@yahoo.es
[mailto:Javier_Castillo_Villar@yahoo.es]
Sent: Thursday, April 18, 2002 2:10 AM
To: ethmac@opencores.org
Subject: RE: [ethmac] Standard info.


 There is few information about ethernet. The only font of information is
the IEEE 802.3 standard but at this moment you must pay for it.
 I am for university of cantabria in spain and actually we are working on 
a phy and mac core for ethernet in VHDL. It is a small core, it donīt 
have all the standard features, but we hope it works. Itīs only a 10 
base t core not 100 because we only want a vhdl core that we can 
program in a spartan 2 fpga. If weīll do a 100 Mbps core we need a PLL 
outside the fpga so we are not interested in.
 We have captured some ethernet frames  with a digital oscilloscope 
and we analyze then with matlab to have a real vision of the standard 
because in the 802.3 standard you cannot find all the information you 
need. If you want the frame captures and the matlab program or if you 
have any question about the standard please write me

 My email is: javier_castillo_villar@yahoo.es


----- Original Message ----- 
From: "Igor Mohor" <igorm@o... > 
To: <ethmac@o... > 
Date: Wed, 17 Apr 2002 01:57:00 +0200 
Subject: RE: [ethmac] Standard info. 

> 
> 
> Try reading the spec. I wrote ;) 
> 
> > -----Original Message----- 
> > From: owner-ethmac@o...  
> [/cgi-bin/post.cgi?cmd=new&to=owner-ethmac%20at%20opencores%
20dot%20org&msg=/ml-archive/ethmac/msg00035.shtml 
> > Behalf Of Wilson Roger 
> > Sent: 16. april 2002 12:04 
> > To: Open Cores - Ethernet (E-mail) 
> > Subject: [ethmac] Standard info. 
> > 
> > 
> > In order to understand how the core works I need to know more 
> > information about Ethernet itself. Can you suggest what the 
> best 
> > sources of information are, the standard itself perhaps? 
> > 
> > Thanks. 
> > 
> > Roger. 
> > 
> > 
> > 
> > -- 
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> 
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