[SI-LIST] Re: HSPCIE Simulation about Transmission Line
- From: sghsu55 <sghsu55@xxxxxxxxxxxx>
- To: zhang_kun@xxxxxxxxxx, si-list <si-list@xxxxxxxxxxxxx>
- Date: Thu, 7 Apr 2005 16:01:52 +0800 (CST)
Zhangkun,
Hspice solver reduces the time step to account for the
short transmission line owing to the short line
contributed a small propagation delay. Accordingly,
you have to take longer simulation time.
Hope it is helpful.
Sogo Hsu
Foxconn
--- Zhangkun <zhang_kun@xxxxxxxxxx> wrote:
> Dear all
> In the current simulation, I meet one problem. When
> there is short transmission line in the netlist, the
> simulation is very slow.
>
> For example, in my netlist, there is the following
> sentence
>
> wline_trunk01 node1 vss rseries1 vss
> rlgcfile=sline_50.rlgc n=1 l=1800mil
> wline_trunk02 rseries2 vss stub_01 vss
> rlgcfile=sline_50.rlgc n=1 l=6500mil
> wline_trunk03 stub_01 vss stub_02 vss
> rlgcfile=sline_50.rlgc n=1 l=200mil
> wline_pull stub_02 vss pull vss
> rlgcfile=sline_50.rlgc n=1 l=200mil
>
> wline_stub01 nd_out_01a vss nd_out_01 vss
> rlgcfile=sline_50.rlgc n=1 l=200mil
> wline_stub02 nd_out_02a vss nd_out_02 vss
> rlgcfile=sline_50.rlgc n=1 l=200mil
>
> If the length of the wline_stub02 is set as 10mil,
> the simulation would become very slow. Could anybody
> tell me the reason.
>
> Best Regards
>
> Zhangkun
> 2005.4.7
>
>
>
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