Abort a DSPF annotate question

[free1983]

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!

 

[free1983]

dspf file specification

The question could be simpled to this :
what is the relationship between "*|I (U3583:A U3583:A I 2.3241e-14 " and "Cg34620 U3583 : A 0 9.8482e-15" ,they all means "pin capacitance",what the differences between them, should thay be added together or only one of them should be calculated when to calculate the wire capacitance?
Thanks!

 

[lmnca]

what is the relationship between "*|I (U3583:A U3583:A I 2.3241e-14 " and "Cg34620 U3583 : A 0 9.8482e-15" ,they all means "pin capacitance"

No. The Cg* statement are the grounded cap part of the PI segment connected to the pins, whereas the "|I*" statement indeed provide the actual gate capacitance of the pins.
When an extractor tool extracts a net, each segment of wire is described as a Pi device (a resistor connecting two grounded capacitance nodes). Half of the amount of capacitance associated to a wire segment is put on the grounded capacitance behind the resistor, and the other half on the node before the resistor.