Re: [microblaze-uclinux] USB and Ethernet support

[John Williams <jwilliams@xxxxxxxxxxxxxx>]

Hi Ivan,

Ivan wrote:

> - The same question for Ethernet Chip. I have selected the LXT970A
> Ethernet PHY chip. I think this chip is supported because is similar to
> the Insight v2mb1000 board. However in the mailing-list there are
> references to the CS8900 10Mb Ethernet chip. I have this chip, but i
> don't know it is currently supported.

If the LXT970A uses the industry standard MII interface, then as Hasjim 
suggests it should connect directly to the xilinx ethernet MAC core, and 
thus the xilinx_enet kernel driver should work almost immediately.  A 
zero-pain solution, except that
  (a) the Xilinx emac core is not free, and
  (b) it consumes a significant amount of FPGA logic

The CS8900A is a combined MAC/PHY, with an ISA interface.  An earlier 
student (hi Johan! :) developed an OPB->ISA bridge, and we have another 
student working on integrating and connecting the CS8900.

> I ask these questions because we are thinking to build a custom board
> for MicroBlaze projects and I am looking for interesting peripherals for
> the board. Any suggestion will be accepted.

As Hasjim said, I'm in the throes of developing Egret (perhaps better 
labelled YAFPP - Yet Another FPGA Prototyping Platform!).

It is a stackable architecture for rapid prototyping of reconfigurable 
computing systems.  Think of Lego bricks for embedded/reconfigurable 
systems, and you're on the right track.

http://eprint.uq.edu.au/archive/00000834/

Cheers,

John

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