Challenges in the verification of MOSAIX ASIC for ALICE ITS3
The MOSAIX is a wafer-scale, full-functionality prototype ASIC for the ALICE Inner Tracking System (ITS3) upgrade, implemented in $65\,\text{nm}$ stitching technology. It integrates 144 independently powered pixel matrices, eight $10\,\text{Gb/s}$ serializers, and on-chip data and power distribution, making full-chip verification highly resource-intensive (over $80\,\text{GB}$ of memory and 192,000 tests). Verification also targets a sophisticated power-up sequence and radiation conditions of $10^{6}$\ particles $s^{-1} cm^{-2}$ and $4\,\text{kGy}$ TID. This work presents a UVM-based verification strategy that identified 260 design errors and summarizes key lessons from ASIC sign-off.
physics.ins-det↗