- Motivation for change, UFS goals, uses SCSI architecture model, command sequence, UFS HCI architecture overview

- Host controller interface (HCI), HCI interactions, UFS layers, UniPro layer communications, application layer, device manager, transport layer, interconnect layer, multiple LUNs

- Command interface, HCI host, controller, UTP, UPIU, HCI example, contents of request, execution priority, HCI memory spaces, host memory structures, device manager overview, task manager overview, transport layer overview, general UPIU contents, UniPro overview

- HCI task management example, task management request descriptor, command fetch and delivery, task management request and response UPIUs, HCI transfer request example, UTP transfer request descriptor (UTRD), command UPIU contents, writing doorbell register, command submission, queue priority, priority between logical units, DMA data transfer, read transaction, write transaction, read to transfer (RTT), RTT rules and priority, command status

- HCI register groups, host capabilities registers, operation and runtime registers, UTP transfer request registers, UTP task management request registers, UIC command registers, UIC arguments

- HCI initialization steps, query request and UPIU contents, descriptor types, generating DME access, completing DME access, verifying UIC completion

- SCSI commands, UFS command list, command format with examples, logical units, well-known LUNs (W-LUNs), boot LUNs, block logical provisioning, thin provisioning, exception events, dynamic capacity, UFS cache behavior and commands, UFS protocol information unit (UPIU) details, transaction codes, UPIU types, flag fields

- Query request UPIU detailed view of all fields, descriptor types, device descriptors, configuration descriptor format, unit descriptor format, UFS attributes, UFS flags

- HCI error types, system bus errors, UIC error codes, interrupt status register, UIC command errors, other errors

- UniPro introduction, UIC data flow, layer access, layer primitives, UniPro basics, UIC layers, messages, segments, end-to-end (E2E) flow control

- L4 responsibilities, Service Data Unit (SDU), Protocol Control Info (PCI), Protocol Data Unit (PDU), segment, primitive, segmentation of UPIUs, sending and receiving fragments, constructing L4 segment, transport layer connections, CPort, connections in UFS, CPort signals, request timing diagram example, DME access, L4 management

- Routing concepts, UFS network, network layer actions and terminology

- Data link layer transmitter and receiver responsibilities, data link layer packets (DL_PDUs), control primitives, status primitives, control symbols, example L2 data frame

- Purpose of flow control, L2 peer communication, AFC control frame, AFC transmission, AFC credits, AFC sequence number, NAC control frame, flow control elements, flow control example, flow control time-out

- AFC control frame, AFC transmission rules, NAC control frame, response to NAC, NAC transmission rules, priority of link layer frames, priority allows pre-emption, examples of normal and pre-empted frames, basic acknowledgement operation, elements of acknowledgement protocol, CRC, replay buffer, sequence numbers, OUTACK threshold, multiple AFC examples

- L1.5 Phy adapter transmit side responsibilities, M-PHY control markers (MK0, MK1, MK2, MK3, MK4), symbol translation, example data frame on x2 link, IDLE sequence, burst boundaries, skip symbols and rules for skip insertion, logical to physical interface, RMMI basics, scrambling, service primitives, UFS service primitives, UIC attribute access (local and remote)

- Rx CDR (clock and data recovery), bit lock, symbol lock, elastic buffer, link de-skew, 8b/10b decoding, PHY receiver errors

- M-PHY characteristics, asymmetric lanes, M-PHY terms (module, pins, line), link required features, link optional features, speed and rate requirements, line states, data transfer basics, M-PHY module types (Type-I: LS-MODE, Type-II: HS-MODE, Type-II), 8b/10b encoding, protocol throttling

- Differential signaling, large vs small amplitude, de-emphasis, inter-symbol interference (ISI), line-reset

- Type-I M-TX state machine, Type-I M-RX state machine, SAVE states, Unpowered, Disabled, HIBERN8, RCT (Re-configuration trigger), STALL, SLEEP, BURST states, BURST MODES and GEARS, BREAK states

- UniPro state machine, link initialization (TRG_UPR0, TRG_UPR1, TRG_UPR2), link startup sequence, phases 0 and 0b: lane discovery, phases 1 and 2: lane realignment, phases 3 to 5: startup termination, remote attribute access via PACP (PHY Adapter Control Protocol), PACP frames, inline vs offline, M-PHY attributes

- Device power modes (off, sleep, active, waiting for instructions), UFS device power mode states, SSU (Start Stop Unit) command, logical unit power condition, active mode, pre-active mode, idle mode, pre-sleep mode, UFS-sleep mode, Pre-PowerDown mode, UFS-PowerDown mode, UniPro power management, UniPro power primitives, link power change, related UniPro states, power state mapping

- Big picture, RMMI TX and RX signals, control interface, data interface, several examples