[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: New PCI card developing

>From: kevin.sharpe@btinternet.com
>To: sergey.platovskikh@vissim.no, pci-sig@znyx.com
>Subject: Re: New PCI card developing
>Date: Thu, 25 Apr 2002 14:30:02 +0100 (BST)
>I have used the QuickLogic products with great success.
>The PCI cores are fabricated on the silicon so you don't have any PCI place 
>and route issues.

        I have done my own synthesizable Verilog RTL target/initiator PCI IP 
core, and after months of struggle, I can meet 33MHz PCI's Tsu < 7ns with 
only a few minutes of automatic P&R with Spartan-II-5, although 36 FFs have 
to be handplaced far away from the pins to prevent a positive hold time.
That only takes about 5 minutes, and another 5 minutes or so to reP&R the 
design again.
Furthermore, Xilinx or Altera PCI IP cores come with placement constraint 
information, so as long as dealing with 33MHz PCI and a fairly new device, I 
strongly doubt that P&R is going to be a big issue.

>They have a suite of parts from 32bit targets through to 64bit 
>  They correctly support universal card design by using dedicated VIO pins 
>(very rare!),

        I believe a universal PCI card is going to be a must for PCI 2.3, so 
QuickPCI users will likely not have to do anything.
I don't know what Xilinx or Altera is going to do about the universal card 
requirement issue.
I know that if a PCI card with Xilinx or Altera-based FPGAs have two bit 
streams, one for 3.3V PCI and one for 5V PCI, it can be a universal card, 
but the PCI card will need an external chip (I saw a company called 
Nallatech using a CPLD to do that.), and is Xilinx or Altera going to 
release the HDL code as a reference design for such a CPLD?

>and don't have the inherent problem of SRAM configuration (which > often 
>exceeds the PCI reset period).

        I don't own an oscilloscope, but I have never observed that problem 
with Spartan-II XC2S150.
        I suppose one nice thing about OTP device is that the design is 
secure, although I am sure it is costly during the development.

Kevin Brace (In general, don't respond to me directly, and respond within 
the mailing list.)

Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp.