Tapcell

Tapcell #

Tapcell and endcap insertion.

Commands#

Note

Parameters in square brackets[-paramparam] are optional.
Parameters without square brackets-param2param2 are required.

Add Tapcell/Endcap#

This command inserts tapcells or endcaps.

The figures below show two examples of tapcell insertion. When only the-tapcell_master and-endcap_master masters are given, the tapcell placementis similar to Figure 1. When the remaining masters are give, the tapcellplacement is similar to Figure 2.


Figure 1: Tapcell insertion representation	Figure 2: Tapcell insertion around macro representation

tapcell[-cnrcap_nwin_mastercnrcap_nwin_master][-cnrcap_nwout_mastercnrcap_nwout_master][-disallow_one_site_gaps][-distancedist][-endcap_cppendcap_cpp][-endcap_masterendcap_master][-endcap_prefixendcap_prefix][-halo_width_xhalo_x][-halo_width_yhalo_y][-incnrcap_nwin_masterincnrcap_nwin_master][-incnrcap_nwout_masterincnrcap_nwout_master][-no_cell_at_top_bottom][-row_min_widthmin_width][-tap_nwin2_mastertap_nwin2_master][-tap_nwin3_mastertap_nwin3_master][-tap_nwintie_mastertap_nwintie_master][-tap_nwout2_mastertap_nwout2_master][-tap_nwout3_mastertap_nwout3_master][-tap_nwouttie_mastertap_nwouttie_master][-tap_prefixtap_prefix][-tapcell_mastertapcell_master][-tbtie_cpptbtie_cpp]

Options#

Switch Name	Description
`[-cnrcap_nwin_master]`	Macro cell placed at the corners the core area according the row orientation.
`[-cnrcap_nwout_master]`	Macro cell placed at the corners the core area according the row orientation.
`[-disallow_one_site_gaps]`	Option is deprecated.
`[-distance]`	Distance (in microns) between each tapcell in the checkerboard.
`[-endcap_cpp]`	Option is deprecated.
`[-endcap_master]`	Master used as an endcap.
`[-endcap_prefix]`	Prefix for the endcaps instances. The default value is`PHY_`.
`[-halo_width_x]`	Horizontal halo size (in microns) around macros during cut rows.
`[-halo_width_y]`	Vertical halo size (in microns) around macros during cut rows.
`[-incnrcap_nwin_master]`	Master cell placed at the corners of macros, according the row orientation.
`[-incnrcap_nwout_master]`	Master cell placed at the corners of macros, according the row orientation.
`[-no_cell_at_top_bottom]`	Option is deprecated.
`[-row_min_width]`	Minimum width (in microns) that a row must have during cut rows.
`[-tap_nwin2_master]`	Master cell placed at the top and bottom of macros and the core area according the row orientation. This master should be smaller than`tap_nwintie_master`
`[-tap_nwin3_master]`	Master cell placed at the top and bottom of macros and the core area according the row orientation. This master should be smaller than`tap_nwin2_master`.
`[-tap_nwintie_master]`	Master cell placed at the top and bottom of macros and the core area according the row orientation.
`[-tap_nwout2_master]`	Master cell placed at the top and bottom of macros and the core area according the row orientation. This master should be smaller than`tap_nwouttie_master`.
`[-tap_nwout3_master]`	Master cell placed at the top and bottom of macros and the core area according the row orientation. This master should be smaller than`tap_nwout2_master`.
`[-tap_nwouttie_master]`	Master cell placed at the top and bottom of macros and the core area according the row orientation.
`[-tap_prefix]`	Prefix for the tapcell instances. The default value is`TAP_`.
`[-tapcell_master]`	Master used as a tapcell.
`[-tbtie_cpp]`	Option is deprecated.

Cut Rows#

This command cuts rows.

cut_rows[-endcap_masterendcap_master][-halo_width_xhalo_x][-halo_width_yhalo_y][-row_min_widthmin_width]

Options#

Switch Name	Description
`[-endcap_master]`	Master used as an endcap.
`[-halo_width_x]`	Horizontal halo size (in microns) around macros during cut rows.
`[-halo_width_y]`	Vertical halo size (in microns) around macros during cut rows.
`[-row_min_width]`	Minimum width (in microns) that a row must have during cut rows.

Only adding boundary/endcap cells#

Place endcaps into the design, the naming for the arguments toplace_endcaps is based on theLEF58CLASS specification foe endcaps.

place_endcaps[-bottom_edgemasters][-cornermaster][-edge_cornermaster][-endcapmasters][-endcap_horizontalmasters][-endcap_verticalmaster][-left_bottom_cornermaster][-left_bottom_edgemaster][-left_edgemaster][-left_top_cornermaster][-left_top_edgemaster][-right_bottom_cornermaster][-right_bottom_edgemaster][-right_edgemaster][-right_top_cornermaster][-right_top_edgemaster][-prefixprefix][-top_edgemasters]

Options#

Switch Name	Description
`[-bottom_edge]`	List of masters for the bottom row endcaps. (overrides`-endcap_horizontal`).
`[-corner]`	Master for the corner cells on the outer corners.
`[-edge_corner]`	Master for the corner cells on the inner corners.
`[-endcap]`	Master used as an endcap.
`[-endcap_horizontal]`	List of masters for the top and bottom row endcaps. (overrides`-endcap`).
`[-endcap_vertical]`	Master for the left and right row endcaps. (overrides`-endcap`).
`[-left_bottom_corner]`	Master for the corner cells on the outer bottom left corner. (overrides`-corner`).
`[-left_bottom_edge]`	Master for the corner cells on the inner bottom left corner. (overrides`-edge_corner`).
`[-left_edge]`	Master for the left row endcaps. (overrides`-endcap_vertical`).
`[-left_top_corner]`	Master for the corner cells on the outer top left corner. (overrides`-corner`).
`[-left_top_edge]`	Master for the corner cells on the inner top left corner. (overrides`-edge_corner`).
`[-right_bottom_corner]`	Master for the corner cells on the outer bottom right corner. (overrides`-corner`).
`[-right_bottom_edge]`	Master for the corner cells on the inner bottom right corner. (overrides`-edge_corner`).
`[-right_edge]`	Master for the right row endcaps. (overrides`-endcap_vertical`).
`[-right_top_corner]`	Master for the corner cells on the outer top right corner. (overrides`-corner`).
`[-right_top_edge]`	Master for the corner cells on the inner top right corner. (overrides`-edge_corner`).
`[-prefix]`	Prefix to use for the boundary cells. The default value is`PHY_`.
`[-top_edge]`	List of masters for the top row endcaps. (overrides`-endcap_horizontal`).

Only adding Tapcells#

This command is used for tapcell placement only.

place_tapcells-distancedist-mastertapcell_master

Options#

Switch Name	Description
`-distance`	Distance between tapcells.
`-master`	Master to use for the tapcells.

Remove Tapcells/Endcaps#

This command is used for removing tapcells or endcaps based on their prefix.

tapcell_ripup[-endcap_prefixendcap_prefix][-tap_prefixtap_prefix]

Options#

Switch Name	Description
`[-endcap_prefix]`	Remove endcaps with said prefix. The default value is`PHY_`.
`[-tap_prefix]`	Remove tapcells with said prefix. The default value is`TAP_`.

Example scripts#

You can find script examples for both 45nm and 14nm in./etc/scripts

./etc/scripts/example_14nm.tcl./etc/scripts/example_45nm.tcl

Regression tests#

There are a set of regression tests in./test. For more information, refer to thissection.

Simply run the following script:

./test/regression

Limitations#

FAQs#

Check outGitHub discussionabout this tool.

License#

BSD 3-Clause License. SeeLICENSE file.

Contents

Movatterモバイル変換

Tapcell

Contents

Tapcell#

Commands#

Add Tapcell/Endcap#

Options#

Cut Rows#

Options#

Only adding boundary/endcap cells#

Options#

Only adding Tapcells#

Options#

Remove Tapcells/Endcaps#

Options#

Example scripts#

Regression tests#

Limitations#

FAQs#

License#

Tapcell #