eldo_user

SPEF File Example for Corners
Post-Layout Simulation
SPEF File Example for Corners
This example shows how Eldo handles this SPEF file depending on the corner parameters
specified.
SPEF file:
*SPEF "IEEE 1481-1997"
*DESIGN "TEST"
*DATE "Wed Jun 18 11:28:40 2008"
*VENDOR "Mentor Graphics"
*DESIGN_FLOW ""
*DIVIDER /
*DELIMITER :
*BUS_DELIMITER [ ]
*T_UNIT 1 NS
*C_UNIT 1 PF
*R_UNIT 1 KOHM
*L_UNIT 1 HENRY
*PORTS
N0 O
top O
*D_NET N1 0.0000:0.01:0.2
*CAP
1 N1 N0 1.1:2.3:5.2
*RES
1 N1 top 1
*END
The Eldo handling of this SPEF file depends on the .SPEF_INCLUDE corner parameter
specified. If you have:
.SPEF_INCLUDE FILE=test.spef CORNER=1
In this example, with CORNER=1, Eldo takes *D_NET N1 0.0000 and 1 N1 N0 1.1.
.SPEF_INCLUDE FILE=test.spef CORNER=2
In this example, with CORNER=2, Eldo takes *D_NET N1 0.01 and 1 N1 2.3.
.SPEF_INCLUDE FILE=test.spef CORNER=3
In this example, with CORNER=3, Eldo takes *D_NET N1 0.2 and 1 N1 N0 5.2.
(min:typ:max) can be used as an alternative to select one of the three values. By default, Eldo
takes the second value if there are three values specified.
Eldo® User's Manual, 15.3 401