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ADR-0018: LA replaces VA, BAAW segment-based mapping in PE_DMA, 1:1 (per-channel) and n:1 (aggregated) modes with parameterized channel count. ADR-0019: xbar/bridge removal, channel router topology with horizontal line layout, aggregated router for n:1 mode, unified NOC path for local/remote HBM access. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>