SDF Annotator Guide
Product Version 3.2
January 2001
© 1990-2000 Cadence Design Systems, Inc. All rights reserved. Printed in the United States of America.
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SDF Annotator Guide
Contents
Preface ............................................................................................................................ |
7 |
About This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
7 |
Finding Information in This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
7 |
Other Sources of Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
8 |
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
8 |
Customer Education Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
8 |
Syntax Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
8 |
1 |
|
Using the SDF Annotator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
10 |
Understanding How the SDF Annotator Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
10 |
Calling the SDF Annotator from Verilog HDL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
12 |
$sdf_annotate System Task Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
12 |
Examples: Calling the SDF Annotator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
14 |
2 |
|
Using the Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
16 |
Understanding the Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
16 |
Sample Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
16 |
Configuration File Keyword Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
17 |
Timing Keywords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
17 |
INTERCONNECT_MIPD Keyword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
20 |
MTM Keyword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
21 |
SCALE_FACTORS Keyword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
21 |
SCALE_TYPE Keyword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
22 |
TURNOFF_DELAY Keyword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
23 |
MODULE Keyword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
24 |
MAP_INNER Keyword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
24 |
January 2001 |
3 |
Product Version 3.2 |
SDF Annotator Guide |
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3 |
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Using the SDF File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
30 |
Understanding the SDF File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
30 |
SDF File Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
31 |
Using Identifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
31 |
Using Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
32 |
OVI SDF Specification Tool Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
34 |
OVI Standard SDF Keywords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
34 |
SDF Keywords for Verilog-XL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
35 |
SDF Keywords for Verifault-XL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
36 |
OVI SDF Specification Version Differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
36 |
SDF Version 1.* Constructs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
37 |
SDF Version 2.* Constructs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
37 |
SDF Version 3.* Constructs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
38 |
SDF File Keyword Constructs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
38 |
DELAYFILE Keyword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
39 |
CELL Keyword and Constructs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
41 |
DELAY Keyword and Constructs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
43 |
ABSOLUTE Keyword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
44 |
INCREMENT Keyword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
44 |
PATHPULSE Keyword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
58 |
PATHPULSEPERCENT Keyword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
60 |
TIMINGCHECK Keyword and Constructs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
60 |
TIMINGENV Keyword and Constructs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
72 |
SDF File Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
82 |
Example 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
82 |
Example 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
83 |
Example 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
84 |
4 |
|
Annotating with Verilog-XL and Verifault-XL. . . . . . . . . . . . . . . . . . . |
85 |
SDF-Specific Plus Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
85 |
+sdf_cputime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
86 |
+sdf_error_info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
86 |
January 2001 |
4 |
Product Version 3.2 |
SDF Annotator Guide |
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+sdf_file<filename> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
87 |
+sdf_ign_timing_edge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
87 |
+sdf_nocheck_ celltype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
87 |
+sdf_no_errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
87 |
+sdf_nomsrc_int . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
88 |
+sdf_no_warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
88 |
+sdf_split_two_timing_check |
|
+sdf_splitvlog_splitsuh |
|
+sdf_splitvlog_splitrecrem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
88 |
+sdf_verbose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
88 |
Additional Plus Options that Control the SDF Annotator . . . . . . . . . . . . . . . . . . . . . . . . . |
89 |
Improving SDF Annotator Performance and Memory Use . . . . . . . . . . . . . . . . . . . . . . . |
91 |
Removing Module Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
92 |
Disabling Multisource Interconnect Timing Resolution . . . . . . . . . . . . . . . . . . . . . . . . |
92 |
Using Pre-scaled Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
93 |
Synchronizing Time Scales . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
93 |
Synchronizing Precision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
93 |
Disabling Cell Type Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
93 |
Processing Without Verbose Annotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
94 |
Using (INSTANCE *) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
94 |
Grouping Redundant Constructs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
94 |
Removing Zero-Delay MIPDs, MITDs, and SITDs . . . . . . . . . . . . . . . . . . . . . . . . . . . |
94 |
Working with Verilog-XL SDF Annotator Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . |
94 |
Reverting to Original Timing Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
95 |
PATHPULSE Limitation for Interconnect Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
95 |
COND Keyword Matching Condition Restriction . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
95 |
TIMESCALE Keyword Restriction in SDF File Header . . . . . . . . . . . . . . . . . . . . . . . . |
95 |
Edge Identifier Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
96 |
Multiple Delay Data Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
96 |
Escape Identifier Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
97 |
January 2001 |
5 |
Product Version 3.2 |
SDF Annotator Guide |
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A |
|
SDF Annotator Error and Warning Messages . . . . . . . . . . . . . . . |
. 98 |
Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
99 |
Warning Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
100 |
B |
|
Valid and Invalid Interconnect Combinations. . . . . . . . . . . . . . . . . |
102 |
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
102 |
Valid Interconnect Combinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
102 |
Invalid Interconnect Combinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
115 |
Index.............................................................................................................................. |
118 |
January 2001 |
6 |
Product Version 3.2 |