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RE: about 64bit pci signals



Why are you using a 21154 in an environment where it will _never_ see 64
bit use?  Is the 21153 no longer available?
-- Brooks

> -----Original Message-----
> From: sun zhi-gang [mailto:zgsun@nudt.edu.cn]
> Sent: Monday, 16 November, 1998 01:23
> To: Mailing List Recipients
> Subject: about 64bit pci signals 
> 
> 
> Hello everyone,
> 
> I want to use 64 bit PCI bridge chip (21554) in 32 bit 
> environment. That
> is the following signals are never used.
> 
> ack64#
> gnt64#
> cbe[4:7]#
> ad[32:63]
> par64
> 
> Who can tell me how to deal with these signals? Let them 
> float, connect
> to Vdd or Vss?
> 
> thanks, Any advice is welcome.
> --
> *************
>  Sun Zhi-gang
>  Section 612, Dept. of Computer Science,
>  National Univercity of Defence Technology ,
>  Changsha, Hunan Province, 410073, P.R. China,
>  Tel: (86-731)4506612(O)
>  Fax: (86-731)4556650(O)
>  Email: zgsun@nudt.edu.cn
> *************
> 
>