NVMe Figure Reference and Scenario Index

NVM Express Base 2.4NVM Command Set 1.3NVMe over PCIe Transport 1.4

NVMe · BASE 2.4 / NVM 1.3 / TRANSPORT 1.4

NVMe Figure Reference and Scenario Index

Find original definitions by question, field or figure number. Seven volumes combine 45 scenarios with 117 selected figures, connecting requirements to query interfaces, fields and defensible conclusions. Each exercise and figure has one canonical location.

01 · Initialization, Queues, and PCIe

Start with addresses and capabilities, then readiness, queue locations and interrupts. Link and PCIe error registers distinguish transport observations from command completions.

20 source figures

02 · Commands, Data Pointers, and Completion Status

Match the command using SQID/CID before decoding SCT/SC. For data-transfer problems, distinguish PRP pages from SGL addresses, lengths and descriptor types.

SQID
Submission Queue Identifier
CID
Command Identifier, unique among outstanding commands in one SQ
SCT
Status Code Type
PRP
Physical Region Page, a data-page pointer
SGL
Scatter Gather List

21 source figures

03 · Identify, Namespaces, and Data Formats

CNS selects the Identify structure. Look up controller capabilities, namespace configuration and selected-format sizes separately, then combine them into a valid configuration.

10 source figures

04 · I/O Commands and Data Integrity

Follow command addresses and counts into metadata, protection information and atomicity. Equal field widths do not imply equal counting rules; command success alone does not establish every persistence or atomicity guarantee.

17 source figures

05 · Features, Power, Performance, and Resources

Separate support, current, default and saved values before interpreting individual features. Power latency, scheduling weights, queue counts and reclamation resources use different units.

17 source figures

06 · Health, Events, and Diagnostic Logs

Validate retrieval parameters and support, then distinguish current state, cumulative counters and historical snapshots. Telemetry and persistent-event versions, lengths and retrieval lifecycles determine whether records can be combined.

16 source figures

07 · Maintenance and Management

Separate the requested action, command completion and background result. Firmware commitment, namespace creation and acceptance of a Sanitize command each require different follow-up observations.

16 source figures

Choose a lookup through scenarios

The seven volumes contain 45 scenarios. Each opens with a worked scenario connecting the relevant figures and fields, followed by other scenarios and the figure index. Every scenario and field guide keeps one canonical location.

InterfaceWhat it provides
IdentifyCapabilities, identity, formats and limits, including controller attributes such as OACS, SANICAP and CTRATT; select CNS and the applicable NSID/CSI.
Controller propertiesNVMe registers such as CAP, CC and CSTS: capabilities, configuration and readiness, accessed through memory mapping on PCIe.
PCIe configuration spaceBARs, PCI CMD, Link Status, MSI-X and PCIe AER answer transport and function-configuration questions.
Get FeaturesCurrent, default, saved values or supported capabilities; retain both FID and SEL.
Get Log PageStatus, counters, events and snapshots, with LID-specific targeting, retrieval and acknowledgment rules.
SMART / HealthRetrieved through Get Log Page LID=02h, not a separate generic command; capability and NSID determine reporting scope.
NSID
Namespace Identifier
CSI
Command Set Identifier
MSI-X
Message Signaled Interrupts Extension

Initialization, Queues, and PCIe

  1. Why does PCIe enumeration not establish I/O readiness?
  2. How do a 64-bit BAR and doorbell offset combine?
  3. Why does RDY=1 not always establish media readiness?
  4. Can an x4-capable device currently operate at x2?
  5. Why might a CQE appear without an MSI-X notification?
  6. Are PCIe AER and NVMe AER the same mechanism?

Commands, Data Pointers, and Completion Status

  1. Does the same CID twice imply duplicate completion?
  2. Which bit does Invalid Field identify?
  3. Is PRP2 a data page or a list address?
  4. Can correct SGL addresses still describe too little data?
  5. Which NUMD retrieves 3 KiB from offset 1024?
  6. Does an effects flag prove that a namespace was just created?

Identify, Namespaces, and Data Formats

  1. How many more namespaces can be created?
  2. Why is an existing namespace absent from this controller?
  3. Did a changed NSID identify the same namespace?
  4. Which capacity does each namespace field describe?
  5. How can 128 KiB of data exceed MDTS?
  6. Do zero Dataset Management limits mean unsupported?
  7. Does a defined LID guarantee an available log?

I/O Commands and Data Integrity

  1. Is an eight-block Write also atomic across power failure?
  2. Why does NAWUPF=0 not necessarily mean one block?
  3. Does a size-compliant Write remain atomic across a boundary?
  4. Does a successful Write already establish persistence?
  5. Why order data and index Writes if both use FUA?
  6. How does PRACT=1 affect metadata larger than PI?
  7. Is FFh after deallocation a failure?

Features, Power, Performance, and Resources

  1. Why can a successful Get Features leave the current value unknown?
  2. How many queues follow from a request for sixteen?
  3. What do two APST transitions imply after 700 ms idle?
  4. Does a slowdown at high temperature establish HCTM activity?
  5. Does an unchanged HMB address establish an intact return?
  6. Do weights seven and three guarantee a two-to-one IOPS ratio?

Health, Events, and Diagnostic Logs

  1. Does 120% Percentage Used mean the drive has failed?
  2. How much data does a four-unit DUW increase represent?
  3. Does specifying an NSID guarantee per-namespace SMART?
  4. Do two namespace alerts describe one shared group?
  5. Does FLBA=0 identify a failed LBA when self-test is idle?
  6. Can Telemetry chunks from different generations be combined?
  7. Where does the next Persistent Event Log record begin?

Maintenance and Management

  1. Can a single namespace support Overwrite Sanitize?
  2. Does one sanitized namespace establish subsystem-wide sanitization?
  3. Does firmware stored in slot two mean it is running?
  4. Does a Format NSID always confine its effects to one namespace?
  5. Does an unsaveable protection feature clear on reset?
  6. Does zero mean the same for Boot and namespace protection?

Complete field and figure index

Figure and explanationSource locationSearchable fields / identifiers
Base 2.4 Figure 34 · Memory-Based Property Definition§3.1.4
PDF 80		MMIO · doorbell · OFST
Base 2.4 Figure 36 · Offset 0h: CAP – Controller Capabilities§3.1.4.1
PDF 81–84		CAP · MQES · MPSMIN · MPSMAX · DSTRD · TO · CRMS · CSS
Base 2.4 Figure 41 · Offset 14h: CC – Controller Configuration§3.1.4.5
PDF 86–89		CC · EN · MPS · IOSQES · IOCQES · SHN · CRIME
Base 2.4 Figure 42 · Offset 1Ch: CSTS – Controller Status§3.1.4.6
PDF 89–91		CSTS · RDY · CFS · SHST · ST
Base 2.4 Figure 43 · Offset 20h: NSSR – NVM Subsystem Reset§3.1.4.7
PDF 92		NSSR · NSSRC · NSSRS · 4E564D65h
Base 2.4 Figure 44 · Offset 24h: AQA – Admin Queue Attributes§3.1.4.8
PDF 92		AQA · ASQS · ACQS · queue depth
Base 2.4 Figure 45 · Offset 28h: ASQ – Admin Submission Queue Base Address§3.1.4.9
PDF 92		ASQ · ASQB · Admin SQ · alignment
Base 2.4 Figure 46 · Offset 30h: ACQ – Admin Completion Queue Base Address§3.1.4.10
PDF 93		ACQ · ACQB · Admin CQ · interrupt vector 0
Base 2.4 Figure 57 · Offset 68h: CRTO – Controller Ready Timeouts§3.1.4.21
PDF 99		CRTO · CRIMT · CRWMT · ready timeout
Base 2.4 Figure 92 · Command Dword 0§4.1.1
PDF 165–166		CDW0 · OPC · CID · PSDT · FUSE
Base 2.4 Figure 93 · Common Command Format§4.1.1
PDF 166–168		SQE · NSID · MPTR · DPTR · CDW10 · PRP2
Base 2.4 Figure 97 · Common Completion Queue Entry Layout – Admin and All I/O Command Sets§4.2.1
PDF 170		CQE · DW0 · DW1 · DW2 · DW3
Base 2.4 Figure 98 · Completion Queue Entry: DW 2§4.2.1
PDF 170		SQID · SQHD · CQE DW2
Base 2.4 Figure 99 · Completion Queue Entry: DW 3§4.2.1
PDF 171		CID · P · Phase Tag · STATUS · CQE DW3
Base 2.4 Figure 101 · Completion Queue Entry: Status Field§4.2.3
PDF 171–172		SCT · SC · DNR · M · CRD · ACRE
Base 2.4 Figure 102 · Status Code – Status Code Type Values§4.2.3
PDF 172		SCT · Generic · Command Specific · Media · Path Related
Base 2.4 Figure 103 · Status Code – Generic Command Status Values§4.2.3.1
PDF 173–176		generic status · Invalid Field · Invalid Namespace · SC
Base 2.4 Figure 104 · Status Code – Command Specific Status Values§4.2.3.2
PDF 177–178		command specific · queue error · firmware status · SCT 1
Base 2.4 Figure 107 · Status Code – Media and Data Integrity Error Values§4.2.3.3
PDF 180–181		SCT 2 · Guard · Application Tag · Reference Tag · Media Error
Base 2.4 Figure 110 · PRP Entry Layout§4.3.1
PDF 184		PRP · Page Base Address · offset · CC.MPS
Base 2.4 Figure 111 · PRP Entry – Page Base Address and Offset§4.3.1
PDF 184		PBAO · PRP1 · PRP2 · alignment
Base 2.4 Figure 113 · PRP List Layout for Physically Non-Contiguous Memory Pages§4.3.1
PDF 185		PRP List · page chain · non-contiguous
Base 2.4 Figure 114 · SGL Validation Error Conditions§4.3.2
PDF 187		SGL validation · Invalid Number of SGL Descriptors · Invalid SGL Segment Descriptor
Base 2.4 Figure 116 · Generic SGL Descriptor Format§4.3.2
PDF 187		SGLID · SGLDT · SGLDST · descriptor
Base 2.4 Figure 119 · SGL Data Block descriptor§4.3.2
PDF 188–189		SGL Data Block · ADDR · LEN · SGLS
Base 2.4 Figure 121 · SGL Segment descriptor§4.3.2
PDF 189		SGL Segment · type 2 · LEN · ADDR
Base 2.4 Figure 122 · SGL Last Segment descriptor§4.3.2
PDF 190		SGL Last Segment · type 3 · last segment
Base 2.4 Figure 177 · Device Self-test – Command Dword 10§5.2.6
PDF 225		Device Self-test · STC · short · extended · Host-Initiated Refresh
Base 2.4 Figure 187 · Firmware Commit – Command Dword 10§5.2.9
PDF 229		Firmware Commit · CA · FS · BPID · activate
Base 2.4 Figure 191 · Firmware Image Download – Command Dword 10§5.2.10
PDF 231		Firmware Image Download · NUMD · FWUG · chunk
Base 2.4 Figure 195 · Format NVM – Command Dword 10§5.2.11
PDF 234–235		Format NVM · LBAFL · LBAFU · SES · LBAFEE · PI · MSET
Base 2.4 Figure 198 · Get Features – Command Dword 10§5.2.12
PDF 235–236		Get Features · FID · SEL · current · default · saved
Base 2.4 Figure 201 · Completion Queue Entry Dword 0 when Select is set to 11b§5.2.12
PDF 238		SEL 3 · CHANG · NSSPEC · SVBL
Base 2.4 Figure 204 · Get Log Page – Command Dword 10§5.2.13
PDF 239		Get Log Page · LID · LSP · RAE · NUMDL
Base 2.4 Figure 205 · Get Log Page – Command Dword 11§5.2.13
PDF 240		NUMDU · LSI · Endurance Group Identifier · Get Log Page
Base 2.4 Figure 208 · Get Log Page – Command Dword 14§5.2.13
PDF 240–241		OT · LPO · index offset · byte offset · CSI · UIDX
Base 2.4 Figure 211 · LID Supported and Effects Data Structure§5.2.13.1.1
PDF 243–244		LID 00h · LSUPP · IOS · LIDSP · SPEDS
Base 2.4 Figure 212 · Error Information Log Entry Data Structure§5.2.13.1.2
PDF 244–246		LID 01h · ECNT · SQID · CID · PEL · BYTLOC · BITLOC · LPVER
Base 2.4 Figure 213 · SMART / Health Information Log Page§5.2.13.1.3
PDF 247–251		LID 02h · SMART · CW · CTEMP · DUR · DUW · POH · PUSED · TMT
Base 2.4 Figure 215 · Firmware Slot Information Log Page§5.2.13.1.4
PDF 252		LID 03h · AFI · CAFS · NAFS · FRS
Base 2.4 Figure 217 · Commands Supported and Effects Data Structure§5.2.13.1.6
PDF 254–255		LID 05h · CSUPP · LBCC · NCC · NIC · CCC · CSE · CSER · CSP
Base 2.4 Figure 218 · Device Self-test Log Page§5.2.13.1.7
PDF 256		LID 06h · CDSTO · CDSTC · DSTOS · RDS
Base 2.4 Figure 219 · Self-test Result Data Structure§5.2.13.1.7
PDF 257–258		DSTS · DSTR · DSTC · VDINFO · FLBA · SEGN · POH
Base 2.4 Figure 221 · Telemetry Host-Initiated Log Page§5.2.13.1.8
PDF 260–261		LID 07h · Telemetry Host-Initiated · THDA1LB · THDGN · THS
Base 2.4 Figure 223 · Telemetry Controller-Initiated Log Page§5.2.13.1.9
PDF 262–263		LID 08h · TCDA · TCDGN · TCS · Telemetry Controller-Initiated
Base 2.4 Figure 225 · Endurance Group Information Log Page§5.2.13.1.10
PDF 264–265		LID 09h · Endurance Group · CW · AVSP · PUSED · ENDGID
Base 2.4 Figure 232 · Persistent Event Log Specific Parameter Field§5.2.13.1.14
PDF 272		LID 0Dh · ACT · context · ACT 3 · PEL
Base 2.4 Figure 233 · Persistent Event Log Page§5.2.13.1.14
PDF 273–275		TLL · TNEV · LHL · LREV · GNUM · RCE · SEB
Base 2.4 Figure 234 · Persistent Event Format§5.2.13.1.14
PDF 275–276		ET · ETR · EHL · VSIL · EL · VSI · ED · ETSTP
Base 2.4 Figure 236 · Persistent Event Log Event Types§5.2.13.1.14.2
PDF 277		ET · ETR · Firmware Event · Namespace Change · Sanitize Event
Base 2.4 Figure 294 · FDP Configuration Descriptor§5.2.13.1.29
PDF 319–321		LID 20h · FDP · DSZE · FDPCV · RGIF · NRG · NRUH · RUNS · ERUTL
Base 2.4 Figure 312 · Sanitize Status Log Page§5.2.13.1.38
PDF 340–345		LID 81h · SPROG · SOS · SCDW10 · SSI · GDE · NDE · STNSID
Base 2.4 Figure 333 · Identify – Command Dword 10§5.2.14
PDF 363		Identify · CNS · CNTID · CNS 01h · CNS 00h
Base 2.4 Figure 336 · Identify – CNS Values§5.2.14
PDF 364–365		CNS · NSID · CNTID · CSI · Identify list
Base 2.4 Figure 338 · Identify – Identify Controller Data Structure, I/O Command Set Independent§5.2.14.2.1
PDF 366–408		Identify Controller · MDTS · OACS · ONCS · LPA · ELPE · FRMW · SANICAP · SQES · CQES · SGLS · NPSS
Base 2.4 Figure 340 · Identify – Power State Descriptor Data Structure§5.2.14.2.1
PDF 410–412		PSD · NOPS · MP · MXPS · ENLAT · EXLAT · IDLP · IPS · RRT · RRL
Base 2.4 Figure 342 · Identify – Namespace Identification Descriptor§5.2.14.2.3
PDF 414		NIDT · NIDL · NID · EUI64 · NGUID · UUID · CSI
Base 2.4 Figure 346 · Identify – I/O Command Set Independent Identify Namespace Data Structure§5.2.14.2.8
PDF 417–420		CNS 08h · NSTAT · NRDY · NSATTR · FPI · ENDGID · NVMSETID · ANAGRPID
Base 2.4 Figure 443 · Namespace Attachment – Command Dword 10§5.2.24
PDF 471		Namespace Attachment · SEL · Attach · Detach · Controller List
Base 2.4 Figure 446 · Namespace Management – Command Dword 10§5.2.25
PDF 472–473		Namespace Management · SEL · Create · Delete · Restore
Base 2.4 Figure 451 · Sanitize – Command Dword 10§5.2.26
PDF 476–477		Sanitize · SANACT · AUSE · OWPASS · NDAS · EMVS · PREQ
Base 2.4 Figure 454 · Sanitize Namespace – Command Dword 10§5.2.27
PDF 479		Sanitize Namespace · SANACT · PREQ bit4 · EMVS · NSID
Base 2.4 Figure 464 · Set Features – Command Dword 10§5.2.30
PDF 483		Set Features · SV · FID · Feature Identifier Not Saveable
Base 2.4 Figure 466 · Set Features – Feature Identifiers§5.2.30
PDF 483–485		FID · Feature Identifier · scope · persistence · data buffer
Base 2.4 Figure 467 · Arbitration & Command Processing – Command Dword 11§5.2.30.1.1
PDF 486		FID 01h · HPW · MPW · LPW · AB · arbitration
Base 2.4 Figure 468 · Power Management – Command Dword 11§5.2.30.1.2
PDF 487		FID 02h · PS · WH · IIELL · IIELLSS
Base 2.4 Figure 471 · Volatile Write Cache – Command Dword 11§5.2.30.1.4
PDF 490–491		FID 06h · WCE · VWC · volatile cache · Flush
Base 2.4 Figure 472 · Number of Queues – Command Dword 11§5.2.30.1.5
PDF 491		FID 07h · NSQR · NCQR · queue allocation
Base 2.4 Figure 473 · Number of Queues – Completion Queue Entry Dword 0§5.2.30.1.5
PDF 492		NSQA · NCQA · CQE DW0 · allocated queues
Base 2.4 Figure 475 · Autonomous Power State Transition – Command Dword 11§5.2.30.1.7
PDF 494		FID 0Ch · APSTE · APST · autonomous power
Base 2.4 Figure 477 · Autonomous Power State Transition Data Structure Entry§5.2.30.1.7
PDF 495		ITPT · ITPS · APST entry · idle transition
Base 2.4 Figure 482 · HCTM – Command Dword 11§5.2.30.1.10
PDF 498		FID 10h · HCTM · TMT1 · TMT2 · Kelvin · throttling
Base 2.4 Figure 541 · Write Protection – Command Dword 11§5.2.30.1.38
PDF 538		FID 84h · WPS · Write Protect · Permanent Write Protect
Base 2.4 Figure 542 · Boot Partition Write Protection Config - Command Dword 11§5.2.30.1.39
PDF 539–540		FID 85h · BP0WPS · BP1WPS · RPMB · Boot Partition
Base 2.4 Figure 543 · Interrupt Coalescing – Command Dword 11§5.2.30.2.1
PDF 541		FID 08h · TIME · THR · coalescing · interrupt latency
Base 2.4 Figure 545 · Host Memory Buffer – Command Dword 11§5.2.30.2.3
PDF 542–543		FID 0Dh · HMB · EHM · MR · HMNARE
NVM Command Set 1.3 Figure 4 · Atomicity Parameters for Single Atomicity Mode§2.1.4
PDF 15–16		AWUN · AWUPF · NAWUN · NAWUPF · ACWU · NACWU · atomicity
NVM Command Set 1.3 Figure 8 · Atomic Boundaries Example§2.1.4.4
PDF 19		NABO · NABSN · NABSPF · atomic boundary · alignment
NVM Command Set 1.3 Figure 18 · Status Code – Generic Command Status Values§3.1.2
PDF 25		SCT 0 · LBA Out of Range · Capacity Exceeded · Atomic Write Unit Exceeded
NVM Command Set 1.3 Figure 19 · Status Code – Command Specific Status Values§3.1.2
PDF 25		SCT 1 · Conflicting Attributes · Invalid Protection Information · Copy errors
NVM Command Set 1.3 Figure 20 · Status Code – Media and Data Integrity Error Values§3.1.2
PDF 26		SCT 2 · Compare Failure · Deallocated or Unwritten Logical Block · DULBE
NVM Command Set 1.3 Figure 21 · Reclaim Unit Handle Status Descriptor§3.2.1.1
PDF 26		RUH · PID · RUHID · EARUTR · RUAMW · I/O Management Receive
NVM Command Set 1.3 Figure 22 · Opcodes for NVM Commands§3.3
PDF 27		opcode · Read 02h · Write 01h · Flush 00h · Compare 05h · Copy 19h
NVM Command Set 1.3 Figure 39 · Copy – Copy Descriptor Formats§3.3.2
PDF 32		Copy · DF · SNSID · descriptor format
NVM Command Set 1.3 Figure 47 · Dataset Management – Range Definition§3.3.3
PDF 45		DSM · CATTR · LLB · SLBA · range index · offset
NVM Command Set 1.3 Figure 53 · Read – Command Dword 10 and Command Dword 11§3.3.4
PDF 49		Read · SLBA · CDW10 · CDW11
NVM Command Set 1.3 Figure 54 · Read – Command Dword 12§3.3.4
PDF 49		Read NLB · LR · FUA · PRINFO · STC · CETYPE
NVM Command Set 1.3 Figure 70 · Write – Command Dword 10 and Command Dword 11§3.3.6
PDF 54		Write · SLBA · destination LBA
NVM Command Set 1.3 Figure 71 · Write – Command Dword 12§3.3.6
PDF 54		Write NLB · FUA · LR · PRINFO · DTYPE · CETYPE · STC
NVM Command Set 1.3 Figure 83 · Write Zeroes – Command Dword 12§3.3.8
PDF 59–60		Write Zeroes · DEAC · NSZ · NLB · PRCHK · STC
NVM Command Set 1.3 Figure 91 · Format NVM – Command Dword 10 – NVM Command Set Specific Fields§4.1.1
PDF 63		Format NVM · PIL · PI · MSET · Type 1 · Type 2 · Type 3
NVM Command Set 1.3 Figure 123 · Identify – Identify Namespace Data Structure, NVM Command Set§4.1.5.1
PDF 85–93		CNS 00h · NSZE · NCAP · NUSE · FLBAS · DPS · DLFEAT · LBAF · NAWUN · NABSN
NVM Command Set 1.3 Figure 125 · LBA Format Data Structure, NVM Command Set Specific§4.1.5.1
PDF 94		LBAF · LBADS · MS · RP
NVM Command Set 1.3 Figure 127 · NVM Command Set I/O Command Set Specific Identify Namespace Data Structure§4.1.5.3
PDF 97–101		CNS 05h · CSI 00h · LBSTM · PIC · ELBAF · Storage Tag
NVM Command Set 1.3 Figure 128 · Extended LBA Format Data Structure, NVM Command Set Specific§4.1.5.3
PDF 101–102		ELBAF · PIF · QPIF · STS · QPIFS
NVM Command Set 1.3 Figure 129 · I/O Command Set Specific Identify Controller Data Structure for the NVM Command Set§4.1.5.4
PDF 103–106		CNS 06h · CSI 00h · VSL · WZSL · WUSL · DMRL · DMRSL · DMSL · NVMDSMSV
NVM Command Set 1.3 Figure 134 · Namespace Management – Host Specified Fields§4.1.6
PDF 112–113		NSZE · NCAP · FLBAS · DPS · NMIC · NPHNDLS · Placement Handle
NVM Command Set 1.3 Figure 153 · Metadata – Contiguous with LBA Data, Forming Extended LBA§5.2.3
PDF 129		extended LBA · metadata · MS · FLBAS
NVM Command Set 1.3 Figure 154 · Metadata – Transferred as Separate Buffer§5.2.3
PDF 130		MPTR · separate metadata · DPTR · metadata buffer
NVM Command Set 1.3 Figure 155 · 16b Guard Protection Information Format when STS field is cleared to 0h§5.3.1.1
PDF 131		16b Guard · Application Tag · Reference Tag · STS 0 · PI endian
NVM Command Set 1.3 Figure 157 · 32b Guard Protection Information Format§5.3.1.2
PDF 133		32b Guard · PI layout · Storage and Reference Space
NVM Command Set 1.3 Figure 159 · 64b Guard Protection Information Format§5.3.1.3
PDF 134		64b Guard · PI layout · Storage Tag · Reference Tag
NVM Command Set 1.3 Figure 174 · Write Command 16b Guard Protection Information Processing§5.3.2.1
PDF 143		PRACT · Write PI · MD 8 · MD 16 · 16b Guard
NVM Command Set 1.3 Figure 175 · Read 16b Guard Command Protection Information Processing§5.3.2.2
PDF 145		PRACT · Read PI · metadata transfer · 16b Guard
PCIe Transport 1.4 Figure 5 · Offset (1000h + ((2y) * (4 << CAP.DSTRD))): SQyTDBL – Submission Queue y Tail Doorbell§3.1.2.1
PDF 10		SQyTDBL · SQT · DSTRD · tail · wrap
PCIe Transport 1.4 Figure 6 · Offset (1000h + ((2y + 1) * (4 << CAP.DSTRD))): CQyHDBL – Completion Queue y Head Doorbell§3.1.2.2
PDF 10–11		CQyHDBL · CQH · head · wrap
PCIe Transport 1.4 Figure 12 · Offset 04h: CMD - Command§3.8.1.2
PDF 17		PCI CMD · BME · MSE · IOSE · MMIO · DMA
PCIe Transport 1.4 Figure 20 · Offset 10h: MLBAR (BAR0) – Memory Register Base Address, lower 32-bits§3.8.1.10
PDF 19		BAR0 · MLBAR · BA · TP · PF · RTE
PCIe Transport 1.4 Figure 21 · Offset 14h: MUBAR (BAR1) – Memory Register Base Address, upper 32-bits§3.8.1.11
PDF 19		BAR1 · MUBAR · BA · 64-bit address
PCIe Transport 1.4 Figure 44 · Offset MSIXCAP + 2h: MXC – MSI-X Message Control§3.8.4.2
PDF 24–25		MSI-X · MXE · FM · TS · interrupt
PCIe Transport 1.4 Figure 45 · Offset MSIXCAP + 4h: MTAB – MSI-X Table Offset / Table BIR§3.8.4.3
PDF 25		MTAB · TBIR · TO · MSI-X
PCIe Transport 1.4 Figure 46 · Offset MSIXCAP + 8h: MPBA – MSI-X PBA Offset / PBA BIR§3.8.4.4
PDF 25		MPBA · PBA · PBIR · PBAO · pending
PCIe Transport 1.4 Figure 55 · Offset PXCAP + 12h: PXLS – PCI Express Link Status§3.8.5.8
PDF 29		PXLS · NLW · CLS · SCC · link speed · link width
PCIe Transport 1.4 Figure 60 · Offset AERCAP + 4: AERUCES – AER Uncorrectable Error Status Register§3.8.6.2
PDF 31–32		AERUCES · CTS · URES · MTS · UCS · DLPES · PCIe AER
PCIe Transport 1.4 Figure 63 · Offset AERCAP + 10h: AERCES – AER Correctable Error Status Register§3.8.6.5
PDF 33		AERCES · RES · BTS · BDS · RTS · RRS · correctable
PCIe Transport 1.4 Figure 75 · EOM Header§3.9.1.1
PDF 42–43		LID 19h · EOM · EOMIP · EDGN · HSIZE · RSZ · DS · ND · EPL
PCIe Transport 1.4 Figure 76 · EOM Lane Descriptor§3.9.1.1
PDF 43–45		MSTAT · LN · EYE · NROWS · NCOLS · EDLEN · Printable Eye · BER

Source documents

Locations refer to the supplied ratified PDFs. For Base, PDF page = printed page +26; the other two use identical page numbers. Original figure numbers and English titles are retained for PDF search. Source PDFs are not redistributed.

  • NVM Express Base Specification · Revision 2.4 · 2026-07-31
    NVM-Express-Base-Specification-Revision-2.4-Ratified-2026.07.31.pdf
  • NVM Express NVM Command Set Specification · Revision 1.3 · 2026-07-31
    NVM-Express-NVM-Command-Set-Specification-Revision-1.3-Ratified-2026.07.31.pdf
  • NVM Express NVMe over PCIe Transport Specification · Revision 1.4 · 2026-07-31
    NVM-Express-NVMe-over-PCIe-Transport-Specification-Revision-1.4-Ratified-2026.07.31.pdf
Jia-Chang

Jia-Chang

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PCIe Chapter 36: Dependencies, ID-Based Ordering, and Messages

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