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本帖最后由 7miv 于 2013-6-21 13:31 编辑
G-2012.06
=========
The following sections describe new features, changes, and enhancements in the
IC Compiler Reference Methodology version G-2012.06.
UPF Updates
-----------
The following updates have been made for IEEE 1801, which is also known as
Unified Power Format (UPF):
* Support has been added in icc_setup.tcl for creating supply set handles when
you create power domains with the upf_create_implicit_supply_sets variable.
* The derive_pg_connection -create_net command has been added in
init_design_icc.tcl for the Synopsys logical database format (.ddc) based flow.
* Support has been added in outputs_icc.tcl for the write_link_library command:
write_link_library -full_path_lib_names \
-output $RESULTS_DIR/write_link_library.tcl"
PrimeTime uses the file produced by this command to identify the correct
libraries to link for cells powered by non-primary power nets.
* The filtering options for the all_level_shifters and all_ao_cells commands have
been updated with the following expression in place_opt_icc.tcl and
route_icc.tcl:
within_block_abstraction==false && within_ilm==false
This update ensures that all_level_shifters and all_ao_cells keep the same
behavior they had in previous releases, which means they are applied on the
top-level hierarchy only.
place_opt Update
----------------
Comments have been added in place_opt_icc.tcl to support intercell spacing
constraints between library cells with the set_lib_cell_spacing_label and
set_spacing_label_rule commands.
Physical Guidance Update
------------------------
Support for ASCII input has been added in the physical guidance flow. Previously,
only the binary input was supported. The messages and commands have been updated
in init_design_icc.tcl and place_opt_icc.
A new variable, ICC_IN_SPG_DEF_FILE, has been added to specify a Design Exchange
Format (DEF) file that contains physical guidance placement information from the
Design Compiler Reference Methodology. The default naming convention for this file
is ${DESIGN_NAME}.mapped.std_cell.def.
You should use ICC_IN_SPG_DEF_FILE for physical guidance placement information
and use ICC_IN_DEF_FILE for non-physical-guidance related floorplan information.
Clock Tree Synthesis Update
---------------------------
The CLOCK NDR and CLOCKSHIELDING NDR sections on the sequence of command execution
have been updated in common_cts_settings_icc.tcl.
In addition, the ICC_CTS_SHIELD_MODE variable is no longer required and has been
removed.
Route and Postroute Optimization Updates
----------------------------------------
* A new option, Zroute, has been added in RMgen.
This option allows you to choose between Zroute or the classic router.
To generate only Zroute scripts, select TRUE. To generate only classic router
scripts, select FALSE.
* The check_routeability command has been replaced by the check_zrt_routeability
command in rm_icc_zrt_scripts/route_icc.tcl.
This change applies only when you select TRUE for the Zroute option in RMgen.
* The -analysis_effort medium option has been added to the set_si_options command
and other set_si_options examples in common_route_si_settings_zrt_icc.tcl.
To improve DRC convergence for newer technology nodes, such as 28nm and below,
a comment has been added that suggests changing the search and repair loop for
the route_opt -initial_route command from 10 to 40.
This comment appears only when you select TRUE for the Zroute option in RMgen.
* The comments regarding power-aware optimization and power recovery have been
updated in route_opt_icc.tcl.
* Comments have been added in common_route_si_settings_zrt_icc.tcl suggesting
that you increase the search and repair loops from 10 to 40 for the
route_opt -initial command for newer technology nodes (28nm and below).
Comments have also been added suggesting that you disable the minimum area and
length checks for the cell pins feature for older technology nodes
(40nm and above).
* Comments regarding filler cell handling have been added in route_opt_icc.tcl
and focal_opt_icc.tcl.
When running route_opt or focal_opt with filler cells placed, the filler cell
type must be std_filler.
ICC-RM_G-2012.06.tar
(560 KB, 下载次数: 229 )
ICC-RM_G-2012.06-SP4.tar
(580 KB, 下载次数: 235 )
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发表于 2013-6-21 12:49:29
