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Hard macros power routing issues

dbekiaris

Hello everybody,

 I import a design in SoC Encounter 7.1, where three hard macros (SRAMs) exist. The problem is that when I am trying to create the power stripes and connect them with the core rings to synthesize the power grid, the SRAM p/g pins cannot connect with the remaining power/ground network, although I have selected the proper metal layer from the .lef files of the macros. Is there anything possible to do for this? I tried also to align pins of the specified macros with the power/ground stripes, but it failed again. If it is possible, please help. Thank you very much in advance.

 

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  • Kari

    Thanks for the picture - I hate to ask again, but could you post a picture that is zoomed in to one particular problem area, so I can really see what your issue is? Also, another thing you can try is to draw the connection yourself, with the wire editor, and see what happens. This is a method we use a lot to figure out why sroute sometimes can't make a connection. Make sure DRC is turned on, so you can see any violations that may be preventing sroute from completing the connections.

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  • Kari

    Thanks for the picture - I hate to ask again, but could you post a picture that is zoomed in to one particular problem area, so I can really see what your issue is? Also, another thing you can try is to draw the connection yourself, with the wire editor, and see what happens. This is a method we use a lot to figure out why sroute sometimes can't make a connection. Make sure DRC is turned on, so you can see any violations that may be preventing sroute from completing the connections.

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