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Guild: wafer.space Community
Channel: ℹ️ - Information / ⁉️-questions / io pads versions
After: 2025-11-30 11:59 p.m.
Before: 2026-01-01 12:00 a.m.
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[2025-12-02 6:17 a.m.] xintingjiang_36756
Hi all,
I noticed that there are 3 types of gds for the pad standard cells but only one type has .cdl file. Was curious which version should we use?

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[2025-12-02 7:27 a.m.] mole99
`fd` are the foundry provided cells. `ef` is from Efabless and modifies the digital I/O cell to add an analog pin. `ws` stands for wafer.space and modifies the power/ground pads to add another pin access layer, since that is necessary for OpenROAD to connect to the core ring.


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