Part 1 – Introduction

• Background and design goals
• UFS concepts and definitions
  • Small Computer System Interface (SCSI) objects and interactions
  • SCSI command set overview
• Host-Controller Interface overview
• UFS layers overview
• Host-Controller Interface (HCI) overview
  • Queue Management
    • Doorbell Head and Tail registers
    • Legacy Transfer requests
    • Multiple Circular Queues (MCQ)
  • Register overview
  • Initialization
• UFS Layers Overview
  • Application Layer
    • Commands delivered from HCI
    • Device manager overview
    • Task manager overview
    • Mechanism for Transfer requests
  • Transport Layer
    • Definition of UFS Protocol Information Units (UPIUs)
  • UniPro Interconnect (UIC) Layer

Part 2 – Host-Controller Interface (HCI)

• Legacy HCI Transfer Requests
  • Definition of Transfer Request Descriptors
  • Types of Physical Region Descriptor Tables
  • Command priority
    • Within a command queue
    • Between Logical Units
  • Data UPIUs
    • Transfer hints from device within data UPIUs
• Multiple Circular Queues
  • Comparison with NVMe
  • Initializing queues and supporting memory structures
  • Example of tracking queue pointers
• HCI Register Details
  • Capability, status, operational, interrupts, and error structures
• HCI Initialization
  • Set up registers
  • Initialize all 3 layers
  • Host-Device optimizations
    • Timestamps
    • Context management
    • Event alerts
  • UIC Initialization

Part 3 – Application and Transport Layers

• Simplified list of SCSI Commands supported
• Setup and use of Logical Units in device
• Exception events
• Dynamic Capacity feature to extend drive life
• Data caching feature
• Details of UPIUs
• Details of UFS descriptors, attributes, and flags, accessed with Query commands
• Extended features
  • Host Performance Booster
  • File-Based Optimization
  • Unified Memory Extension
• Error reporting

Part 4 – UFS Interconnect Layer

• MIPI UniPro overview
• Definition of terms
• UniPro Layers
  • Transport layer (L4)
  • Network layer (L3)
  • Link layer (L2)
    • Flow control protocol
    • Frame acknowledgement protocol
  • Phy Adapter layer (L1.5) and M-PHY (L1)
    • Transmitter operation
    • Receiver operation
  • M-PHY (L1) details
    • Definition of terms
    • Signaling rates
    • 8b/10b Encoding
    • Power conservation
    • Maintaining signal integrity
    • M-PHY Module state machines
• Link Initialization
  • UniPro state machine
  • Low-speed mode startup sequence
  • High-speed mode startup sequence
  • Discovery and Configuration
    • Determine shared capabilities
    • Configure attributes

Part 5 – Power Management

• Device power management
  • Power mode states
  • Power changes
• UniPro power management
  • State machine
  • Power changes

Additional Topic – Reference M-PHY Module Interface (RMMI)

• Introduction
• Definition of terms
• Examples of operation
• Protocol throttling