Re: PCI board not working in some mother boards?

[kevin.sharpe@btinternet.com]

If I remember correctly, the 9449 does not have VIO clamps to support universal (3V/5V) signaling (we rejected the part because of this issue - it has no VIO pin).  If you dig deep into the data I'm sure that Cypress state this somewhere (I'm happy to say that they are pretty open about this sort of thing... unlike some other vendors I could mention !).

Regards

Kevin

>  from:    William Benner <William_Benner@email.msn.com>
>  date:    Thu, 10 Oct 2002 23:57:12
>  to:      pci-sig@znyx.com
>  subject: Re: PCI board not working in some mother boards?
> 
> Hi all,
> 
> I am wondering if anyone can help. We have been distributing a PCI board
> that uses the Cypress CY7C09449PV-AC chip (Formerly the AnchorChips AN3042Q
> "Comem LITE") since 1999 with great results. Recently we have a client who
> informs us that when he places our PCI board into some mother boards, the
> system will not boot.
> 
> For this client, the list of working mother boards are:
> 
> DFI        CB61             Intel Chips (old)
> Elitegroup K7VTA3           VIA KT333(VT8367),(VT8233A) Chips(new)
> Gigabyte   GA-7VRXP         VIA KT333 AGPset(new)
> Gigabyte   GA-7VR           VIA KT333 AGPset(new)
> Gigabyte   GA-71XEH         VIA KT133/KT133E AGPset(old)
> Gigabyte   GA-7ZXE          VIA KT133A AGPset(old)
> 
> 
> For this client, the list of non-working mother boards are:
> Gigabyte   GA-7DX           AMD 761/VIA 686B
> ASUS       A7S333/PA/UAY    SIS745
> MSI        MS-6561          SIS745
> 
> Does anyone have any ideas as to what might be going on here? Could there be
> some 3V/5V issues here?
> 
> Best regards,
> 
> William Benner
> Pangolin Laser Systems
> 
>