Download SmartModel Library User`s Manual

Chapter 8: User-Defined Timing
v
SmartModel Library User’s Manual
Timing Data File Comments
Figure 20 illustrates the different types of comments that can appear in the timing data
file header.
#
#
#
#
Timing data file generated by Logic Modeling, Inc.
for use with Logic Modeling’s compile_timing tool.
@(#) File generated: 5/1/90
@(#) Tool versions: [ 1.0, 0 ]
#
#
#
#
.
.
.
Timing descriptions:
-------------------permax_X2_lh -- Maximum on master clock(X2) cycle time
permin_X2_lh -- Minimum on master clock(x2) cycle time
#
#
#
#
#
.
.
.
Timing expressions:
------------------pwmin_X2 -- ( permin_X2_lh * pwmin_X2 )
pwmax_X2 -- ( permax_X2_lh * pwmax_X2 )
tpd_RS_hl_WE -- ((0.5 * permin_CLKOUT_lh) + tpd_RS_hl_WE)
Comments
Timing Descriptions
Timing Expressions
# Range: Min/Typ/Max
Range Comments
Figure 20: Timing Data File Comments
General Comments
General comments note the date the file was generated and the tool versions used.
Timing Description Comments
Timing descriptions provide information about the labels used in timing statements. If a
label does not clearly describe the particular timing statement, a comment is included at
the top of the timing data file that further describes it. The following example shows
how comments are used to distinguish between timing descriptions that appear nearly
identical.
#
#
#
#
170
Timing descriptions:
-------------------tpd_X2_lh_WE_1 -- WE(lh) delay time from X2(lh) with RS(hl)
tpd_X2_lh_WE_2 -- Delay time X2(lh) to WE, (CLKOUT(hl) to WE(hl))
Synopsys, Inc.
September 2001