PS2251-17

At this year's Computex trade show, Phison revealed that it is working on a USB 3.2 Gen 2x2 controller for external SSDs. Dubbed the PS2251-17 (U17), the company expects drives based on the chip to offer sequential transfer rates up to 1300 MB/s, which is notably higher than USB SSDs featuring a lower-bandwidth USB 3.2 Gen 2 interface. Retail USB drives based on this new controller, in turn, should be available sometime next year. The Phison PS2251-17 controller features two NAND channels with 16 CEs that support modern types of flash, including 3D TLC and 3D QLC NAND, with Toggle 3.0 or ONFI 4.0 interfaces. The chip also supports Phison’s 4th Gen implementation of LDPC and RAID-based ECC, SmartZIP technology, AES256, and other features found...