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  3. Open Instance connections Assura LVS error

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Open Instance connections Assura LVS error

jdgriggs
jdgriggs over 14 years ago
Simple inverter as a Ring Oscillator Design is DRC clean but the Assura LVS brings up Nets Mismatch Tool...Open Instance Connections...

I've tried severval ways to remove error but to no avail.  Any insight will be appreciated.

attach are the screen shot
  • assurra_lvs_error.png
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  • jdgriggs
    jdgriggs over 14 years ago

    Here is the lvs file 

     

     

    *******************************************************************************

    ****** 5_ring_oscillator_1 schematic Ring_Oscillator_inv_sch_1 <vs> 5_ring_oscillator_1 layout Ring_Oscillator_inv_sch_1

    *******************************************************************************

     

    Pre-expand Statistics

    ====================== Original

    Cell/Device schematic layout

    (inverter schematic Ring_Oscillat...) Cell 5 5

    (buffer schematic Ring_Oscillator...) Cell 1 1

    (bufferx2 schematic Ring_Oscillat...) Cell 1 1

    (mosvar) Generic 1 1

    ------ ------

    Total 8 8

    Filter Statistics

    ================= Original Filtered

    Cell/Device schematic layout schematic layout

    (buffer) Cell 1 1 1 1

    (bufferx2) Cell 1 1 1 1

    (inverter) Cell 5 5 5 5

    (mosvar) Generic 0 0 0 0

    (mosvar_m0) Generic 1 1 1 1

    Reduce Statistics

    ================= Filtered Reduced

    Cell/Device schematic layout schematic layout

    (buffer) Cell 1 1 1 1

    (bufferx2) Cell 1 1 1 1

    (inverter) Cell 5 5 5 5

    (mosvar) Generic 0 0 0 0

    (mosvar_m0) Generic 1 1 1 1

    Match Statistics

    ================ Total Unmatched

    Cell/Device schematic layout schematic layout

    (buffer) Cell 1 1 0 0

    (bufferx2) Cell 1 1 0 0

    (inverter) Cell 5 5 0 0

    (mosvar) Generic 0 0 0 0

    (mosvar_m0) Generic 1 1 0 0

    ------ ------ ------ ------

    Total 8 8 0 0

    Match Statistics for Nets 12 12 0 0

    ==========================================================[5_ring_oscillator_1]

    ====== Open Instance Connections ==============================================

    ===============================================================================

    Layout net: |I25/vdd should connect to:

    L |I25/avC7

    Layout net: |I23/vdd should connect to:

    L |I23/avC7

     

    ==========================================================[5_ring_oscillator_1]

    ====== Summary of Errors ======================================================

    ===============================================================================

    Schematic Layout Error Type

    --------- ------ ----------

    - 2 Open Instance Connections

     

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  • jdgriggs
    jdgriggs over 14 years ago

    Here is the lvs file 

     

     

    *******************************************************************************

    ****** 5_ring_oscillator_1 schematic Ring_Oscillator_inv_sch_1 <vs> 5_ring_oscillator_1 layout Ring_Oscillator_inv_sch_1

    *******************************************************************************

     

    Pre-expand Statistics

    ====================== Original

    Cell/Device schematic layout

    (inverter schematic Ring_Oscillat...) Cell 5 5

    (buffer schematic Ring_Oscillator...) Cell 1 1

    (bufferx2 schematic Ring_Oscillat...) Cell 1 1

    (mosvar) Generic 1 1

    ------ ------

    Total 8 8

    Filter Statistics

    ================= Original Filtered

    Cell/Device schematic layout schematic layout

    (buffer) Cell 1 1 1 1

    (bufferx2) Cell 1 1 1 1

    (inverter) Cell 5 5 5 5

    (mosvar) Generic 0 0 0 0

    (mosvar_m0) Generic 1 1 1 1

    Reduce Statistics

    ================= Filtered Reduced

    Cell/Device schematic layout schematic layout

    (buffer) Cell 1 1 1 1

    (bufferx2) Cell 1 1 1 1

    (inverter) Cell 5 5 5 5

    (mosvar) Generic 0 0 0 0

    (mosvar_m0) Generic 1 1 1 1

    Match Statistics

    ================ Total Unmatched

    Cell/Device schematic layout schematic layout

    (buffer) Cell 1 1 0 0

    (bufferx2) Cell 1 1 0 0

    (inverter) Cell 5 5 0 0

    (mosvar) Generic 0 0 0 0

    (mosvar_m0) Generic 1 1 0 0

    ------ ------ ------ ------

    Total 8 8 0 0

    Match Statistics for Nets 12 12 0 0

    ==========================================================[5_ring_oscillator_1]

    ====== Open Instance Connections ==============================================

    ===============================================================================

    Layout net: |I25/vdd should connect to:

    L |I25/avC7

    Layout net: |I23/vdd should connect to:

    L |I23/avC7

     

    ==========================================================[5_ring_oscillator_1]

    ====== Summary of Errors ======================================================

    ===============================================================================

    Schematic Layout Error Type

    --------- ------ ----------

    - 2 Open Instance Connections

     

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