Meaning of layers in GDS

[Sylvain Munaut]

Hi,

The layers in the GDS only have numbers and no names. (GDS limitation). Is there a legend of what layer is what ?

My current guesses : (emphasis on guesses)

64/5    xxx label

64/16   pmos bulk connection ?

64/20   nwell

64/59   xxx label2

65/20   diffusion (shouldn't there be a different one for P/N ?)

66/20   polysilicon gate

66/44   licon

67/5    lipads labels

67/16   lipads

67/20   li

67/44   mcon

68/5    metal1 label

68/16   ?

68/20   metal1

78/44   pmos zone outline ?

81/4    cell outline 1 ?

83/44   drc notes ?

93/44   nmos zone outline ?

94/20   ?

95/20   ?

122/16  nmos bulk connection ?

236/0   cell outline 2 ?

Cheers,

 

   Sylvain

[Tim Edwards]

Hello Sylvain,

I can prepare a GDS layer map document. The document here:


https://docs.google.com/spreadsheets/d/176OcP2h_TT_pDP2-zBLijlgFUP38LVgMQPlDtpLcrsk/edit?ts=5eff8387#

has information about layer mapping between SkyWater GDS and Magic
(tech file pending publication). I can add a page with all of the
SkyWater GDS layer:purpose pairs and descriptions.

Regards,
Tim

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[Sylvain Munaut]

Hi Tim,

>
> https://docs.google.com/spreadsheets/d/176OcP2h_TT_pDP2-zBLijlgFUP38LVgMQPlDtpLcrsk/edit?ts=5eff8387#
>
> has information about layer mapping between SkyWater GDS and Magic
> (tech file pending publication). I can add a page with all of the
> SkyWater GDS layer:purpose pairs and descriptions.

Great, very informative, thank you !

Cheers,

Sylvain