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First Encounter pin placement/layer

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Hi there,

can anyone tell me how to make Encounter place pins on restricted layers, for example on metals 1 & 2 only. Ultimately i'd like my pins placed on a given boundary edge & in a pre-determined order.

Thanks

Stu

p.s I'm actually an alaog layout guy using Encounter (for the first time) to place and route a large digital block in an analog chip. Apologies for the simple Q's, there will be more.


Originally posted in cdnusers.org by sreilly
Parents

  • Hi Kari,

    Thanks for the reply. In the placement satge there is no congestion byt after CTS, it is showing the congestion. I have specify the cell padding as "1".

    One thing in my library there are lot of buffers they have made as "dont_use"(especially cts footprint buffers) and tool has only 2 differs to make useof these buffers their fanout is "1X", may be this is he cause to add lot buffer?? suggest on this

    Any script is availabe to rearrange the pin location as required by user. (i tried after dumping the "io" file, trying to findout the pin location and rearrange it, but i was not able to understand on what base tool has taken offset value (whn i measured with ruler, value will be different ) and how tool has placed. plz suggest.

    while doing CTS, we sould use Route Clock net option "YES" or not? ( and one more optbuffer and add buffer these option "YES" or not in CTS spec file, i am in confusion, sorry to ask, plz suggest)

Reply

  • Hi Kari,

    Thanks for the reply. In the placement satge there is no congestion byt after CTS, it is showing the congestion. I have specify the cell padding as "1".

    One thing in my library there are lot of buffers they have made as "dont_use"(especially cts footprint buffers) and tool has only 2 differs to make useof these buffers their fanout is "1X", may be this is he cause to add lot buffer?? suggest on this

    Any script is availabe to rearrange the pin location as required by user. (i tried after dumping the "io" file, trying to findout the pin location and rearrange it, but i was not able to understand on what base tool has taken offset value (whn i measured with ruler, value will be different ) and how tool has placed. plz suggest.

    while doing CTS, we sould use Route Clock net option "YES" or not? ( and one more optbuffer and add buffer these option "YES" or not in CTS spec file, i am in confusion, sorry to ask, plz suggest)

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