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arXiv · 2410.12990

Low-Power Encoding for PAM-3 DRAM Bus

Jonghyeon Nam·Jaeduk Han·Hokeun Kim
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Abstract

The 3-level pulse amplitude modulation (PAM-3) signaling is expected to be widely used in memory interfaces for its greater voltage margins compared to PAM-4. To maximize the benefit of PAM-3, we propose three low-power data encoding algorithms: PAM3-DBI, PAM3-MF, and PAM3-SORT. With the DRAM memory traces from the gem5 computer architecture simulator running benchmarks, we evaluate the energy efficiency of our three PAM-3 encoding techniques. The experimental results show the proposed algorithms can reduce termination power for high-speed memory links significantly by 41% to 90% for benchmark programs.

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Jonghyeon Nam, Jaeduk Han, Hokeun Kim. 2024-10-16. Low-Power Encoding for PAM-3 DRAM Bus. https://arxiv.org/abs/2410.12990

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