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TapeOut: 2020-07 Unused power signal mismatch #14

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d-m-bailey opened this issue Jul 12, 2022 · 2 comments
Open

TapeOut: 2020-07 Unused power signal mismatch #14

d-m-bailey opened this issue Jul 12, 2022 · 2 comments

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@d-m-bailey
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This issue needs to be resolved or waived before tapeout.

https://gitlab.com/api/v4/projects/36768579/repository/files/tapeout%2Foutputs%2Foas%2Fcaravel_2204289a.oas/raw?ref=main
15adb4f6dd8e482041f8bad67a281c75c6fdd0cd  caravel_2204289a.oas

Some of the power nets that are unused in user_project_wrapper do not match the connections to caravel chip_io.

chip_io user_project_wrapper
vssa1_core vssd2
vssd2_core vdda1
vdda1_core vdda2
vdda2_core vssa1

These nets are not actually used in user_project_wrapper, so relabeling would be sufficient.

vssa1-vssd2

@mkkassem
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We need to check if it impacts other projects.

@marwaneltoukhy
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@d-m-bailey I was looking at the pdn and looks like you are highlighting the wrong net, vssd2 is the 5th ring from the right, not the third
222

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3 participants