mirror of https://github.com/efabless/caravel.git
48 lines
3.0 KiB
Plaintext
48 lines
3.0 KiB
Plaintext
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Pad Instance Clamp connections
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DRN1 SRC1 DRN2 SRC2 B2B
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----------------------------------------------------------------------------------------
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sky130_ef_io__vddio_hvc_pad \mgmt_vddio_hvclamp_pad[0] vddio, vssio
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sky130_ef_io__vddio_hvc_pad \mgmt_vddio_hvclamp_pad[1] vddio, vssio
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sky130_ef_io__vssio_hvc_pad \mgmt_vssio_hvclamp_pad[0] vddio, vssio
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sky130_ef_io__vssio_hvc_pad \mgmt_vssio_hvclamp_pad[1] vddio, vssio
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-----------------------------------------------------------------------------------------
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sky130_ef_io__vdda_hvc_pad mgmt_vdda_hvclamp_pad vdda, vssa
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sky130_ef_io__vssa_hvc_pad mgmt_vssa_hvclamp_pad vdda, vssa
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sky130_ef_io__vdda_hvc_pad user1_vdda_hvclamp_pad vdda1, vssa1
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sky130_ef_io__vssa_hvc_pad user1_vssa_hvclamp_pad vdda1, vssa1
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sky130_ef_io__vdda_hvc_pad user2_vdda_hvclamp_pad vdda2, vssa2
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sky130_ef_io__vssa_hvc_pad user2_vssa_hvclamp_pad vdda2, vssa2
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-----------------------------------------------------------------------------------------
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sky130_ef_io__vccd_lvc_pad mgmt_vccd_lvclamp_pad vccd, vssio, vccd, vssd, vssa
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sky130_ef_io__vssd_lvc_pad mgmt_vssd_lvclmap_pad vccd, vssio, vccd, vssd, vssa
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-----------------------------------------------------------------------------------------
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sky130_ef_io__vccd_lvc_pad user1_vccd_lvclamp_pad vccd1, vssd1, vccd1, vssd, vssio
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sky130_ef_io__vssd_lvc_pad user1_vssd_lvclmap_pad vccd1, vssd1, vccd1, vssd, vssio
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sky130_ef_io__vccd_lvc_pad user2_vccd_lvclamp_pad vccd2, vssd2, vccd2, vssd, vssio
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sky130_ef_io__vssd_lvc_pad user2_vssd_lvclmap_pad vccd2, vssd2, vccd2, vssd, vssio
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-----------------------------------------------------------------------------------------
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Overlay types used:
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1. hvc_pad: vddio -> vssio
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2. hvc_pad: vdda -> vssa
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3. lvc_pad: vccd -> vssio, vccd -> vssd vssa
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4. lvc_pad: vccd -> vssd, vccd -> vssdG vssio
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NOTE: Type (4) crosses domains, so that the local VCCD has a diode to the
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local VSSD and also to the global VSSD. BUT: Although vccd goes all the way
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around the chip in the form of vcchib, vssd does not, which makes the SRC2
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connection effectively unreachable in this configuration, so better to just
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change it to vssd1 and vssd2 for the respective domains.
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New overlay types created:
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1. sky130_ef_io__vddio_hvc_clamped_pad: sky130_ef_io__vddio_hvc_pad + overlay (1)
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2. sky130_ef_io__vssio_hvc_clamped_pad: sky130_ef_io__vssio_hvc_pad + overlay (1)
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3. sky130_ef_io__vdda_hvc_clamped_pad: sky130_ef_io__vdda_hvc_pad + overlay (2)
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4. sky130_ef_io__vssa_hvc_clamped_pad: sky130_ef_io__vssa_hvc_pad + overlay (2)
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5. sky130_ef_io__vccd_lvc_clamped_pad: sky130_ef_io__vccd_lvc_pad + overlay (3)
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6. sky130_ef_io__vssd_lvc_clamped_pad: sky130_ef_io__vssd_lvc_pad + overlay (3)
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7. sky130_ef_io__vccd_lvc_clamped2_pad: sky130_ef_io__vccd_lvc_pad + overlay (4)
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7. sky130_ef_io__vssd_lvc_clamped2_pad: sky130_ef_io__vssd_lvc_pad + overlay (4)
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