Worst case eye estimation method considering power noise on Tx output driver and channel crosstalk & ISI in interposer-based 2.5D interfaces

Abstract

Worst case eye estimation method considering the power noise on Tx output driver and the crosstalk of the interposer channel in interposer-based 2.5D interfaces is proposed. For the eye estimation, the estimation of the output response is preceded, considering the characteristics of Tx output driver and interposer channel. The worst case eye diagram is estimated through the definition of the worst bit patterns ('1' & '0') and worst ISI data sets when the power noise on the Tx output driver and the channel crosstalk are considered, respectively. The eye estimation method is validated by comparison with HSPICE simulation. This estimation method allows for the efficient simulation and reliable accuracy.