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From: sam on 8 Feb 2007 12:17
I've read some of the heated discussions regarding Virtex 4 and SATA,
but I'm still not sure what the answers are. My understanding is that
with a modest amount of external circuitry (NOT an external phy) I can
build a SATA interface. Some of the Xilinx answer database links
regarding SATA are dead. Hopefully someone here can give me some
pointers.

1) What about V4 fails to work for SATA?
2) Has anyone made it work, and willing to explain how it was done?
3) Can 3Gbps speeds be used?
4) Is there another programable device that would be easier (V5 still
needs to age a bit).

Thanks

Sam

From: Antti on 10 Feb 2007 06:22
On 8 Feb., 18:17, "s...(a)catalpatechnology.com"
<s...(a)catalpatechnology.com> wrote:
> I've read some of the heated discussions regarding Virtex 4 and SATA,
> but I'm still not sure what the answers are. My understanding is that
> with a modest amount of external circuitry (NOT an external phy) I can
> build a SATA interface. Some of the Xilinx answer database links
> regarding SATA are dead. Hopefully someone here can give me some
> pointers.
>
> 1) What about V4 fails to work for SATA?
> 2) Has anyone made it work, and willing to explain how it was done?
> 3) Can 3Gbps speeds be used?
> 4) Is there another programable device that would be easier (V5 still
> needs to age a bit).
>
> Thanks
>
> Sam

Hi Sam,

unfortunatly V-5 is the only Xilinx device that is claimed to be SATA
compliant.

V-4 has several issues, some have workarounds some not.
the OOB signalling has workaround, the CDR lock range limitation has
not.

But why are you so sceptic about the V-5 use?
I have ML505 on my desk and it has SATA connectors on it.

besides V-5 Lattice has promised to verify if the SC/ECP2M is fully
SATA compliant
it maybe but it is not officially confirmed by Lattice.

Antti
PS please feel to contact me in private, i have and SATA project
underway.











From: Simon Tam on 2 Mar 2007 16:58
Hi,

We released an Embedded SATA Storage appnote (XAPP716) and reference
system last year. I recommend you to take a look at it. Basically it is an
embedded Linux system with SATA and Gigabit Ethernet connection targetting
ML405 demoboard. It is true there were some SATA support issues with V4 MGT
in particular the OOB detector. However it has been addressed in the design.
The release provides a time-limited evaluation bitfile for anyone with a
ML405 to try out. This release does not support SATA Gen2 (3Gbps) mainly
because we did not have time to implement. V5 GTP has improved and
functional OOB support. It works fine in SATA Gen1/2 in my testcase. Feel
free to ask if you need more info.

Regards,

Simon

<sam(a)catalpatechnology.com> wrote in message
news:1170955032.802747.211060(a)h3g2000cwc.googlegroups.com...
> I've read some of the heated discussions regarding Virtex 4 and SATA,
> but I'm still not sure what the answers are. My understanding is that
> with a modest amount of external circuitry (NOT an external phy) I can
> build a SATA interface. Some of the Xilinx answer database links
> regarding SATA are dead. Hopefully someone here can give me some
> pointers.
>
> 1) What about V4 fails to work for SATA?
> 2) Has anyone made it work, and willing to explain how it was done?
> 3) Can 3Gbps speeds be used?
> 4) Is there another programable device that would be easier (V5 still
> needs to age a bit).
>
> Thanks
>
> Sam
>


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