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ac6 >> ac6-training >> Communications >> Connectivity >> UNIVERSAL FLASH STORAGE (UFS 2.0) Télécharger le catalogue Télécharger la page Ecrivez nous Version imprimable

IS4 UNIVERSAL FLASH STORAGE (UFS 2.0)

This course covers UFS 2.0 , which is the enhanced version of MMC standard

formateur
OBJECTIVES
  • This course explains how SCSI commands are transported over UFS.
  • The hardware layer is detailed, including the analog part.
  • Using UniPro as a tunnel to transport upper protocols.
  • The course explains how command can be queued, enabling multi-threading.
  • The course describes the low power modes.
  • Secure aspects, such as secure erase and authenticated transfers are explained.
  • The UFS Host Controller Interface is also covered.
A more detailed course description is available on request at training@ac6-training.com
Prerequisites
  • Experience of mass-storage interface, such as SD/MMC, USB mass storage class or SATA is recommended.

OVERVIEW
  • Objectives of UFS specification, relationship with MIPI
  • Universal SCSI command set, transport over UFS
  • Layered specification
  • System model, definition of what is a Logical Unit
  • Comparing UFS with MMC, highlighting the differences
M-PHY
  • Architecture and operation
  • Termination scheme
  • Signaling schemes
  • Pulse Width Modulation
  • Embedding clock into the bitstream, 8b10b coding
  • Control symbols
  • DC-balancing, running disparity
  • PHY state definition
  • Transitions between states
  • HS-MODE BURST Operation
  • Bidirectional SYS-BURST Clocking
  • Multilane Operation
  • Test modes
  • Electrical characteristics, eye-diagrams
  • UFS requirements regarding M-PHY attributes
UNIPRO
  • Overview of UNIPRO layered protocol
  • UNIPRO LINK LAYER
  • UNIPRO NETWORK LAYER
  • UNIPRO TRANSPORT LAYER
UFS INTERCONNECT
  • Clock, reset and power supplies
  • Reset, power-up and power-down sequences
  • Power modes, relationship with Link power states
  • Logical Unit reset
UFS TRANSPORT PROTOCOL (UTP )
  • UPIU generic format
  • Data pacing on write transactions
  • UCS related UPIUs
  • Task management related UPIUs
  • Query related UPIUs
SCSI COMMANDS
  • Command Descriptor Block
  • Detailing the INQUIRY Command
  • Managing a Block cache in the device
  • Detailing the REQUEST_SENSE Command
  • Detailing the READ_CAPACITY Command
  • READ, WRITE and PRE-FETCH Commands
  • SYNCHRONIZE_CACHE Command
  • Sequence to write data and verify them
  • VERIFY Command
  • Thin provisioning, logical block address space vs physical block address space
  • UNMAP Command
  • FORMAT_UNIT Command
SECURITY
  • Secure mode, secure removal, Purge operation
  • Device data protection
  • Replay Protected Memory Block
  • Security protocol commands
  • Authenticated read and write sequences
UFS FUNCTIONAL DESCRIPTION
  • Data transfer rules with RTT
  • Boot Logical Units operation
  • Logical Unit management
  • Logical block provisioning
  • Host device interaction
  • Background operation mode
  • Dynamic device capability
  • Data reliability
  • Context management
  • System data tag mechanism
  • Reporting exception events to the host
UFS DESCRIPTORS
  • Descriptor, attributes and flags
  • Enumeration
  • Accessing descriptors
HOST CONTROLLER INTERFACE
  • UTMRD list
  • UTRD list, UTP transfer request descriptor, UTP command descriptor
  • Implementing DMA transfer through Physical Region Descriptor Table
  • UniPro / M-PHY software interface, UIC command
  • Interrupt management, aggregation