SM 2258 SATA 6 Gbs SSD Controller Solution

SM 2258 • The world’s first complete merchant ASIC/firmware SATA 6 Gb/s SSD controller solution supporting 3 D TLC NAND. • Silicon Motion’s proprietary Enhanced NANDXtend technology. • High performance and low power allow SSD OEMs to deliver the most advanced, cost-effective and reliable SSDs in the market. 2

SM 2258 The best performance and cost-optimized four channel SATA 6 Gb/s client SSD controller 128 GB 256 GB 512 GB Performance of SM 2258 + Micron B 0 KB 3 D TLC 3

NANDXtend™ ECC Technology Power efficiency + 20%. NANDXtend™ ECC Technology Decoding efficiency + 40% Correction capability on soft-decoding + 25%. 3 level Error Correction Algorithms to extend PE Cycle up to 3 X Correction capability on hard-decoding x 2 Reliable ‧ Efficient ‧ Power saving 4

Design with NANDXtend ECC technology, SM 2258 extends the SSD lifespan and delivers sustain performance. High NANDXtend provides high efficiency decoding to avoid performance drop in dirty drive. Performance High Clean drive Dirty drive ECC impact performance Low Lifespan 50% 100% 5

SM 2258 features advanced Direct-to-TLC and SLC Caching algorithms for optimal sustained read and write performance with TLC NAND. SLC speed Write Speed (MB/s) 500 SLC region SSD capacity 6

SMI SSD Controllers Fully Support 3 D NAND SM 2258 SM 2260 SATA 6 Gb/s SSD Controller PCIe NVMe 1. 2 SSD Controller p 3 D MLC NAND p 3 D TLC NAND 7