The Universal Flash Storage (UFS) is a JEDEC data transfer standard is designed for mobile systems. Most UFS applications require large storage capacity for data and boot code. Applications include mobile phones, tablets, laptop PCs, DSC, PMP, MP3 and other applications requiring mass storage, boot storage, XiP or external cards. The UFS standard is a simple, but high-performance, serial interface that efficiently moves data between a host processor and mass storage devices. UFS transfers follow the SCSI model, but with a subset of SCSI commands.
UFS 2.1 introduces new extensions to UFS 2.0
- Support for multiple initiators for a UFS target device
- Support for CMD priority for UPIUs
- Support for FFU (Field Firmware Update) using Write buffer SCSI CMD
- Support for data count (update in UPIU field) in terms of block size
The Arasan UFS 2.1 Device controller uses an M-PHY® 3.1 Adapter Layer backed by a UniPro v1.6 Link layer controller as per the specification. The UFS compliant IP cores are interface building blocks that simplify interconnect architectures in mobile platforms. This leads to smaller footprint, greater interoperability between mobile IP, chips and devices from diverse sources, and lower power and EMI.