PCI Core implementation in Spartan 2E FG456 package

[Krishna Kumar]

Hello
I am trying to select a FPGA from the Xilinx spartan 2E family of
devices to implement a PCI core. To be specific I am looking at lowest
speed grade of Xilinx XC2S300E-6-FG456 . This device is not listed in
the list of devices in the Xilinx 33 MHz PCILogicCore datasheet. Only
the PQ208 version of the device is listed. Would it be safe to assume
that the FG456 version would meet the timing of the PCI interface. Has
anybody implemented a PCI core in the device that I am talking about?
Please let me know. Any comments and suggestions towards device
selection would also be appreciated

-Krishna Kumar
DSP Systems Engineer
Signalogic Inc
Dallas, TX

 

[Vikram Pasham]

Would it be safe to assume
that the FG456 version would meet the timing of the PCI interface. Has
anybody implemented a PCI core in the device that I am talking about?
Please let me know. Any comments and suggestions towards device
selection would also be appreciated

XC2S300E-6-FG456 supports PCI 64/33 and I don't expect any problems with
PCI 32/33.

PCI 32/33 LogiCORE only includes UCF file (pin out) for supported devices.
Try contacting your FAE or hotline to obtain UCF file for PCI 32/33
targeting FG456 device.

Regards
Vikram

 

[Krishna Kumar]

Vikram
Thank you for your response. I have been in contact with local Xilinx
FAEs. They are not saying either that XC2S300E-6-FG456 device would
not support PCI32/33 standard. They even provided us with the UCF file
without FLOORPLANNING. Since the Spartan 2E is just a cost reduced
version of the virtex E device they are not sure how the device will
perform without floorplanning.What is your opinion? Please let me
know.

thanks
Krishna Kumar
DSP Systems Engineer
Signalogic Inc
Dallas, TX

Vikram Pasham <Vikram.Pasham@xilinx.com> wrote in message news:<4101ED63.F1C68A16@xilinx.com>...

Would it be safe to assume
that the FG456 version would meet the timing of the PCI interface. Has
anybody implemented a PCI core in the device that I am talking about?
Please let me know. Any comments and suggestions towards device
selection would also be appreciated

XC2S300E-6-FG456 supports PCI 64/33 and I don't expect any problems with
PCI 32/33.

PCI 32/33 LogiCORE only includes UCF file (pin out) for supported devices.
Try contacting your FAE or hotline to obtain UCF file for PCI 32/33
targeting FG456 device.

Regards
Vikram

 

[Eric Crabill]

Hi,

As a licensed user of the Xilinx PCI core, you can go to
the download lounge and access a tool called the "UCF
Generator". You can use this to make a variety of UCF
files.

An implementation of PCI 32/33 in any Virtex or Spartan2
device is fairly "slam dunk", even without any logic
placement at all -- as long as you don't do something
bizarre with the pinout.

Eric