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)
Virtex-4 SELECT MAP configuration
Started by ●September 17, 2007
Reply by ●September 20, 20072007-09-20
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