[SI-LIST] : RE: Bit stream definition in HSPICE

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From: Hassan Ali (hali@nortelnetworks.com)
Date: Thu Mar 29 2001 - 10:59:58 PST


I forgot to add case (3):

        (3)

        Vin in gnd pulse(v1 v2 td tr tf pw per)
        .param v1=0v v2=3.3v td=0ns tr=100ps tf=100ps pw=1.9ns per=4ns

> -----Original Message-----
> From: Ali, Hassan [KAN:0S05:EXCH]
> Sent: Thursday, March 29, 2001 1:36 PM
> To: 'si-list'
> Subject: Bit stream definition in HSPICE
>
> In HSPICE, which of the following is the correct 500Mbps, tr=100ps,
> tf=100ps, 101010101... bit stream definition?
>
> (1)
>
> Vin in gnd pulse(v1 v2 td tr tf pw per)
> .param v1=0v v2=3.3v td=0ns tr=100ps tf=100ps pw=1.8ns per=4ns
>
> (2)
>
> Vin in gnd pulse(v1 v2 td tr tf pw per)
> .param v1=0v v2=3.3v td=0ns tr=100ps tf=100ps pw=1.8ns per=3.8ns
>
> I've always thought that case (1) is the correct one, but I have seen some
> people using case (2). I'm now not so sure which is the correct way.
> Clarifications will be appreciated.
>
> Thanks.
>
> Hassan.
>

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