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Community RAVEL DRC Programming for IC Packaging and… How to define ballpads

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How to define ballpads

Nealb
Nealb over 7 years ago

We would like to write some Ravel programming to measure solder ball to package edge and I am unable to define ballpad and obtain a relation. Is there somehow to do this?

Thanks

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  • Manimaran
    Manimaran over 7 years ago

    Hi Neal,

    you can get all the ballpads from the Ravel predefined relation "ballpad".

    Please refer Ravel Manual section 4 for all the ravel predefined relations

    http://support.cadence.com/wps/myportal/cos/!ut/p/a0/RcmxDoIwEIDhZ3FgpYTFxKaDibM6MCjbUU9puF7LXUvi28vm9n_5zWgeZmTYwgdKSAy0-_lCzBR4iYFPA_r5XqdL8mpVvMt1UitICIpXiOjsvmpELsM3o4vAFUjt6ppOYEMSfP-rb_tj090yCpQk2s4lkjV5OR9-1q5nlA!!/ 

    here is sample code which measures the distance between component and ballpad

    (select (ball_pad comp dist)
            (transform (ball_pad comp) (combine ballpad component)
                (ball_pad comp (distance (center ball_pad) comp))
            )
        (dist < (value MIN_SPACING))
        )

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