FPGA Central

#1 (**permalink**) 11-11-2009, 05:36 PM

On Wed, 2009-11-11 at 06:14 -0800, Antti wrote:
> On Nov 11, 3:57 pm, Vijayan <vicchemi...@gmail.com> wrote:
> > Hi all,
> >
> > I am using virtex 5 (LXT) device in the design. In this, FPGA need to
> > interfaced with copper media 1000BaseT using the core "Ethernet
> > 1000BASE-X PCS/PMA or SGMII".
> > design flow would be "FPGA (MAC -> GMII to SGMII bridge -> GTP
> > transceivers) -> PHY with SGMII support -> 10/100/1000Base -T".
> >
> > Here my question is, In xilinx V5 datasheet DS100.pdf, it is mentioned
> > "Tri-mode 10/100/1000 Mb/s Ethernet MACs
> > - LXT, SXT, TXT, and FXT Platforms
> > - RocketIO transceivers can be used as PHY or connect to
> > external PHY using many soft MII (Media Independent
> > Interface) options":
> >
> > Is it possible to directly connect FPGA to Coppermedia without using
> > the external PHY ? i.e, FPGA(SGMII) to copper media ?
> >
> > Or should the external PHY must always be available in copper media
> > design ?
> >
> > In Datasheet, what Xilinx is referring as " RocketIO transceivers can
> > be used as PHY" ?
> >
> > Note: I am not using 1000Ba***(fiber) in the design.
> >
> > Regards,
> >
> > Vijayan
>
> for copper you need external PHY
>
> Antti

More precisely, for 1000BASE-T you need an external PHY.

Jan

#2 (**permalink**) 11-12-2009, 07:18 AM

On Nov 11, 9:36*pm, Jan Pech <inva...@void.domain> wrote:
> On Wed, 2009-11-11 at 06:14 -0800, Antti wrote:
> > On Nov 11, 3:57 pm, Vijayan <vicchemi...@gmail.com> wrote:
> > > Hi all,
>
> > > I am using virtex 5 (LXT) device in the design. In this, FPGA need to
> > > interfaced with copper media 1000BaseT using the core "Ethernet
> > > 1000BASE-X PCS/PMA or SGMII".
> > > design flow would be "FPGA (MAC -> GMII to SGMII bridge -> GTP
> > > transceivers) -> PHY with SGMII support -> 10/100/1000Base -T".
>
> > > Here my question is, In xilinx V5 datasheet DS100.pdf, it is mentioned
> > > "Tri-mode 10/100/1000 Mb/s Ethernet MACs
> > > - LXT, SXT, TXT, and FXT Platforms
> > > - RocketIO transceivers can be used as PHY or connect to
> > > external PHY using many soft MII (Media Independent
> > > Interface) options":
>
> > > Is it possible to directly connect FPGA to Coppermedia without using
> > > the external PHY ? i.e, FPGA(SGMII) to copper media ?
>
> > > Or should the external PHY must always be available in copper media
> > > design ?
>
> > > In Datasheet, what Xilinx is referring as " RocketIO transceivers can
> > > be used as PHY" ?
>
> > > Note: I am not using 1000Ba***(fiber) in the design.
>
> > > Regards,
>
> > > Vijayan
>
> > for copper you need external PHY
>
> > Antti
>
> More precisely, for 1000BASE-T you need an external PHY.
>
> Jan

Thanks for the solution !

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