Re: [oc] High speed serial comms links

[Richard Herveille <richard@asics.ws>]

Check out the Altera Mercury devices. Just to know you make the right choice.

Richard

>Hi
>
>Sorry, I should have said that this link is being implemented on a
>Virtex-E 200,000 gate device which has LVDS I/O but no
>hardware CDR (Clock Data Recovery), so a synthesisable
>link layer is what I'm after. (Probably will have to be
>specific to the Virtex-E devices)
>
>regards
>Carl
>
> > Xilinx Virtex-II chips support LVDS directly and AMD hypertransport
>protocol as well.
> > Are you looking for a more general (chipwise) solution?
> >
> > ----- Original Message -----
> > From: "Carl van Schaik" <carl@openfuel.com>
> > To: <cores@opencores.org>
> > Sent: Sunday, August 05, 2001 11:17 AM
> > Subject: [oc] High speed serial comms links
> >
> >
> > > Hi
> > >
> > > I have a board design with 4 LVDS transmit and 4LVDS recieve pairs and
>I'm
> > > looking to
> > > get a high speed comms system to run across it.
> > >
> > > I want to use 2TX and 2RX lines, I have two RJ45 connectors
> > > with 2TX and 2RX pairs each.
> > >
> > > I have already tested the recievers and transmitters by sending a 266MHz
> > > clock
> > > (533MBits/s theoretical max data rate) over
> > > a piece of CAT-5 cable and verified its reception.
> > > I now want to design a high speed serializer/deserializer over 2 LVDS
> > > channels (single direction)
> > >
> > > I'm a bit at a loss as to the best way to do this...
> > >
> > > Sending Clock and Frame data requires two channels alone in synchronous
> > > comms.
> > >
> > > I'll be wanting a way to embedd the clock, data and frame over the 2
>signals
> > > in a way
> > > to maximise the bandwidth.
> > > The comms will be eventually implmented between two separate boards that
> > > don't have
> > > synchronised clocks so the design must cater for this.
> > >
> > > any input would be great.
> > >
> > > Hey, if it works out, it could become anouther opencores core.
> > >
> > > thanks
> > > Carl van Schaik
> > > --
> > > OpenFuel Pty Ltd.
> > >
> > > --
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