free1983
Newbie level 6
dspf spec
Hi All
I have a problem abort annotate DSPF file to PrimeTime,I use the read_parasitics command to read in
the DSPF file which was generated by STAR-RC.there is a option -pin_cap_included of read_parasitics
command,I don't known should use this option whether or not?
The MAN PAGE say that:
-pin_cap_included indicates that the RC networks are to included the pin capcitance, By default the
RC network does not included pin capcitances.
Here is some context of my DSPF file:
*|NET n1063 0.0278802PF
*|I (U3583:A U3583:A I 2.3241e-14 2575.28 1714.07)
*|I (U3533:A U3533:A I 1.1156e-14 2468.07 1738.87)
*|I (U3581:Y U3581:Y O 0 2399.8 1725.82)
Cg34620 U3583 : A 0 9.8482e-15
Cg34621 U3533 : A 0 1.43567e-14
Cg34622 U3581 : Y 0 3.67529e-15
R35725 U3583 : A U3533 : A 131.153
R35726 U3533 : A U3581 : Y 74.6751
I don't known the DSPF spec, but we can see that the cap of NET = Cg34620+Cg34621+Cg34622.
The report of Astro display that the cap of U3581/Y is 0.0577pf
If I dont use this Option in PT, the cap of U3581/Y is 0.0622772pf,it may be 0.0278802 +
0.023241+0.01156=0.0622772.
If I use this Option in PT, the cap of U3581/Y is 0.041274pf,how could this value be calculated out?
From the infomation upward,should I use this option whether or not?
Thanks!
Hi All
I have a problem abort annotate DSPF file to PrimeTime,I use the read_parasitics command to read in
the DSPF file which was generated by STAR-RC.there is a option -pin_cap_included of read_parasitics
command,I don't known should use this option whether or not?
The MAN PAGE say that:
-pin_cap_included indicates that the RC networks are to included the pin capcitance, By default the
RC network does not included pin capcitances.
Here is some context of my DSPF file:
*|NET n1063 0.0278802PF
*|I (U3583:A U3583:A I 2.3241e-14 2575.28 1714.07)
*|I (U3533:A U3533:A I 1.1156e-14 2468.07 1738.87)
*|I (U3581:Y U3581:Y O 0 2399.8 1725.82)
Cg34620 U3583 : A 0 9.8482e-15
Cg34621 U3533 : A 0 1.43567e-14
Cg34622 U3581 : Y 0 3.67529e-15
R35725 U3583 : A U3533 : A 131.153
R35726 U3533 : A U3581 : Y 74.6751
I don't known the DSPF spec, but we can see that the cap of NET = Cg34620+Cg34621+Cg34622.
The report of Astro display that the cap of U3581/Y is 0.0577pf
If I dont use this Option in PT, the cap of U3581/Y is 0.0622772pf,it may be 0.0278802 +
0.023241+0.01156=0.0622772.
If I use this Option in PT, the cap of U3581/Y is 0.041274pf,how could this value be calculated out?
From the infomation upward,should I use this option whether or not?
Thanks!