| Author |
Message |
andy2000a
Joined: 18 Jul 2001
Posts: 756
Helped: 7
|
 28 Jul 2003 1:27 eye pattern simulation on spice |
|
|
|
1. use random generator , create a pwl signal with gittern (period )
and use the follow command in hspice
.param width=3*period phase=6ns
.probe tran time_x=par('time+phase-int((time+phase)/width)*width')
.probe tran diff=v(usbdp,usbdn)
phase is delay , and use time_x as X , then select signal diff ,
then you can get hspice USB 2.0 eye pattern simulation ..
|
|
| Back to top |
|
 |
andy2000a
Joined: 18 Jul 2001
Posts: 756
Helped: 7
|
| 28 Jul 2003 1:32 |
|
|
|
put file
unix generator .. but it can not control jittern , I hope someone can rewrite and work on Win2000 , and can specify "jittern"
thank you
|
|
| Back to top |
|
|
andy2000a
Joined: 18 Jul 2001
Posts: 756
Helped: 7
|
| 28 Jul 2003 1:33 |
|
|
|
| upload file again ..
|
|
| Back to top |
|
|
andy2000a
Joined: 18 Jul 2001
Posts: 756
Helped: 7
|
| 28 Jul 2003 1:34 |
|
|
|
i am sorry , I can upload file , who need it ?
and mail to me
|
|
| Back to top |
|
|
ericliu
Joined: 01 Jan 1970
Posts: 69
Helped: 2
|
| 28 Jul 2003 6:28 |
|
|
|
Sandwork's waveview-analyzer can accept hspice output format and show
eye patterns.
|
|
| Back to top |
|
|
