CADENCE SIP DIGITAL LAYOUT While system-in-package (SiP) design allows electronics makers to pack more functionality into a smaller footprint, it often involves highly complex combinations, such as stacked wirebond die, wirebond die stacked on flip-chip die, direct die-to- die attachment, and others. Cadence SiP Digital Layout addresses this complexity by providing a complete constraint- and rules-driven package substrate layout environment that supports all packaging methods, including PGA, BGA, micro-BGA, chip scale, as well as flip-chip and wirebond attach methods.