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pin placement around core in encounter

dipayan
hello, can anyone please tell me how to set the location of input and output pins around the core? i don't have any i/o pads in my design. i am designing a counter and i would like to place the count pins c0, c1, c2, .....c9 etc on the right-hand side of the core and the input control pins and clock, reset on the left-hand side of the core. i can't seem to find the right options in encounter to do this. thanks
  • Hi, You can use editPin command in way to place IO pins on boundary of the block.
    Just example from documentation (Encounter Digital Implementation System Text Command Reference):

    Example:
    The following command modifies the pins as specified here:

    - the command runs on the module DTMF_CORE_INST1
    - the command runs on all pins whose name starts with DTMF_CORE_INST1_OUTPIN
    - the pins are spread on the edge number 2
    - the USE property is set to CLOCK
    - the pins are spread between the coordinates (17 23) and (117 123)
    - the pins are assigned on the layer Metal3
    - the pin status is set to Fixed
    - the pins are snapped to layer tracks
    - the unit is in tracks
    - the spacing between pins for multi-editing is set to 2 tracks
    - the pin depth is set to 10 microns.
    Note: The -unit parameter is set to TRACK but that does not affect the unit of pin depth.
    - the pins are moved to the nearest acceptable location as the -fixOverlap parameter
    is set to 1. However, the -overlapConstraints parameter is not specified.

    editPin \
    -cell DTMF_CORE_INST1 \
    -pin {DTMF_CORE_INST1_OUTPIN} \
    -spreadType RANGE \
    -edge 2 \
    -layer Metal3 \
    -use CLOCK \
    -fixOverlap 1 \
    -snap TRACK \
    -pinDepth 10 \
    -start {17 23} \
    -end {117 23} \
    -spacing 2 \
    -unit TRACK \
    -fixedPin 1


    Hope this helps,
    Mikhail.

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