9.8. Multi-Rank Topology
The simulation decks for multi-rank designs use different top-level files:
- For write operations, the files dq_2rank_wr_top.sp, dq_4rank_wr_top.sp implement the simulation deck for 2-rank and 4-rank interfaces, respectively.
- For read operations, the files dq_2rank_rd_top.sp and dq_4rank_rd_top.sp implement the simulation decks.
The ALTER construct is used to modify the SPICE deck to exercise different target ranks, which facilitates parallel simulations in most SPICE simulators. You must evaluate the data eyes for compliance at each target rank.
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