Virtex-4 SELECT MAP configuration

Hi

Let me ask two questions --:

According to Virtex-4 configuaration guide
(http://www.xilinx.com/bvdocs/userguides/ug071.pdf),
ICAP interface is either 8-bit or 32-bit, with up to 60MHz CCLK.
Most of diagrams and explanations are based on 8-bit interface.

I also saw one document, in which latest VIrtex-4 ICAP provides 32-bit
interface with 100 MHz.

I wonder if 32-bit interface operates, in a same way as 8-bit
interface.

Is 32-bit interface 4 times faster than 8-bit interface?

In 100 MHz mode, are there any handshaking during the bitstream
loading?
(There was no handshaking during bitream loading, in Virtex-II Pro, if
I am correct)

On 18 Wrz, 04:12, Pasacco <pasa...@gmail.com> wrote:
> Hi
>
> Let me ask two questions --:
>
> According to Virtex-4 configuaration guide
> (http://www.xilinx.com/bvdocs/userguides/ug071.pdf),
> ICAP interface is either 8-bit or 32-bit, with up to 60MHz CCLK.
> Most of diagrams and explanations are based on 8-bit interface.
>
> I also saw one document, in which latest VIrtex-4 ICAP provides 32-bit
> interface with 100 MHz.
>
> I wonder if 32-bit interface operates, in a same way as 8-bit
> interface.
>
> Is 32-bit interface 4 times faster than 8-bit interface?
>
> In 100 MHz mode, are there any handshaking during the bitstream
> loading?

It could be to fast,

> (There was no handshaking during bitream loading, in Virtex-II Pro, if
> I am correct)

There is "busy" signal.

Look into the Virtex4 Configuration Guide

Regards,
Jerzy Gbur