RE: [ethmac] pls clarify my doubts

["Igor Mohor" <igorm@opencores.org>]

Hi,

 

1. The source address is built from 48 bits like: 01-02-03-04-05-06. You can get the first 24 bits from the ieee organisation. The other 24 bits are up to you. You can use serial number of the board or something like that.

 

2. It is up to the host to set the destination address and not up to MAC. From the MAC's point of view the destination address is just part of the packet to send. Host can use anything for the destination address.

 

3. Yes. And that source must add the destination and source address to the data. I'm writing a host interface that won't use DMA but normal wishbone cycles to get/store the data.

 

Regards,

    Igor

-----Original Message-----
From: owner-ethmac@opencores.org [mailto:owner-ethmac@opencores.org]On Behalf Of satya
Sent: 25. december 2001 14:31
To: ethmac@opencores.org
Subject: Re: [ethmac] pls clarify my doubts

Hi Igor,

Thanks for your response.But I still have doubts.Please clear me.

 

1.How that Source Address will be determined?

2.How many Destination Addresses your MAC Core can support?

3.For example assume that I am getting some data from some other source(purely data).Is it possible to connect that source with this MAC Core.(I am assuming that I can use that source as the Host for this MAC).

 

Please clarify my doubts.I will be waiting for your reply.

Thanks and Regards

- satya