157Total chapters
25Modules
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Synchronous serial, explained
Why SPI exists, the full-duplex shift-register model, and the launch/sample clocking contract — taught before MOSI/MISO/CS mechanics.
Interview-ready depth
A leveled interview module plus per-chapter interview weighting — CPOL/CPHA, dummy cycles, QSPI, and the misconceptions that trip candidates.
Design → verify → debug
Master/slave FSM RTL, clock divider and CS logic, SVA + a UVM agent, and waveform-based debugging for wrong-mode and bit-alignment bugs.
SPI Complete Curriculum
Your Learning Roadmap
157 chapters · 25 modules — full-duplex shift-register transfers, CPOL/CPHA modes, and QSPI flash.
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Module 1
Why SPI Exists
1.1Communication Between ChipsPlanned1.2Serial vs Parallel CommunicationPlanned1.3Why Motorola Created SPIPlanned1.4Embedded Communication ChallengesPlanned1.5SPI Use CasesPlanned1.6Memory InterfacesPlanned1.7Sensor InterfacesPlanned1.8ADC / DAC InterfacesPlanned
Module 2
SPI Fundamentals
2.1The Master DevicePlanned2.2The Slave DevicePlanned2.3Clock GenerationPlanned2.4Chip SelectPlanned2.5Synchronous CommunicationPlanned2.6The Shift Register ConceptPlanned2.7The Full-Duplex Mental ModelPlanned
Module 3
SPI Signals Deep Dive
3.1SCLKPlanned3.2MOSIPlanned3.3MISOPlanned3.4Slave Select (SS)Planned3.5Chip Select (CS)Planned3.6Signal OwnershipPlanned3.7Timing RelationshipsPlanned3.8Electrical ConsiderationsPlanned
Module 4
SPI Bus Architecture
4.1Single-Slave SystemsPlanned4.2Multiple-Slave SystemsPlanned4.3Shared MOSI / MISOPlanned4.4Individual Chip SelectsPlanned4.5Daisy-Chained SPIPlanned4.6Typical Board ArchitecturesPlanned
Module 5
Full-Duplex Communication
5.1Shift RegistersPlanned5.2Simultaneous TX / RXPlanned5.3Data Exchange ConceptPlanned5.4Dummy TransfersPlanned5.5Full-Duplex ExamplesPlanned5.6Common MisconceptionsPlanned
Module 6
Clocking Fundamentals
6.1Clock SourcePlanned6.2Clock PeriodPlanned6.3Sampling EdgePlanned6.4Launch EdgePlanned6.5Timing RelationshipsPlanned6.6Setup TimePlanned6.7Hold TimePlanned
Module 7
SPI Modes
7.1CPOL — Clock PolarityPlanned7.2CPHA — Clock PhasePlanned7.3Mode 0 (CPOL=0, CPHA=0)Planned7.4Mode 1 (CPOL=0, CPHA=1)Planned7.5Mode 2 (CPOL=1, CPHA=0)Planned7.6Mode 3 (CPOL=1, CPHA=1)Planned
Module 8
SPI Frame Format
8.1Bit OrderingPlanned8.2MSB FirstPlanned8.3LSB FirstPlanned8.4Frame LengthPlanned8.5Command FieldsPlanned8.6Address FieldsPlanned8.7Data FieldsPlanned8.8Protocol FramingPlanned
Module 9
SPI Write Transactions
9.1Write TimingPlanned9.2MOSI FlowPlanned9.3CS TimingPlanned9.4Multi-Byte WritesPlanned9.5Waveform AnalysisPlanned
Module 10
SPI Read Transactions
10.1Read CommandsPlanned10.2Dummy CyclesPlanned10.3MISO TimingPlanned10.4Read LatencyPlanned10.5Waveform AnalysisPlanned
Module 11
Multi-Byte Transfers
11.1Continuous TransfersPlanned11.2Burst TransfersPlanned11.3Auto-Increment AddressingPlanned11.4Streaming DataPlanned11.5Throughput ConsiderationsPlanned
Module 12
Chip Select Management
12.1Active-Low ConceptPlanned12.2Device SelectionPlanned12.3Timing RequirementsPlanned12.4CS GlitchesPlanned12.5Multi-Slave ControlPlanned12.6Debugging CS ProblemsPlanned
Module 13
SPI Flash Communication
13.1Flash ArchitecturePlanned13.2Read CommandsPlanned13.3Page ProgramPlanned13.4Sector ErasePlanned13.5Status RegistersPlanned13.6Boot ProcessPlanned13.7Real Industry ExamplesPlanned
Module 14
Sensor Communication
14.1AccelerometersPlanned14.2GyroscopesPlanned14.3ADC InterfacesPlanned14.4DAC InterfacesPlanned14.5Register AccessPlanned14.6Sensor Protocol ExtensionsPlanned
Module 15
Advanced SPI Features
15.1Dual SPIPlanned15.2Quad SPIPlanned15.3Octal SPIPlanned15.4XIP (Execute In Place)Planned15.5High-Speed ModesPlanned15.6Memory-Mapped AccessPlanned
Module 16
QSPI and OSPI
16.1Why Wider SPI ExistsPlanned16.2Quad Data LinesPlanned16.3Octal Data LinesPlanned16.4Throughput ImprovementsPlanned16.5Memory InterfacesPlanned
Module 17
SPI Performance
17.1ThroughputPlanned17.2LatencyPlanned17.3Clock FrequencyPlanned17.4EfficiencyPlanned17.5Protocol OverheadPlanned17.6Optimization TechniquesPlanned
Module 18
SPI RTL Design
18.1SPI Master FSMPlanned18.2SPI Slave FSMPlanned18.3Shift RegistersPlanned18.4Clock DividerPlanned18.5Chip Select LogicPlanned18.6Mode ConfigurationPlanned18.7Data Path DesignPlanned18.8RTL TemplatesPlanned
Module 19
SPI Verification
19.1Protocol RulesPlanned19.2AssertionsPlanned19.3MonitorsPlanned19.4ScoreboardsPlanned19.5Functional CoveragePlanned19.6UVM SPI AgentPlanned19.7Random TrafficPlanned19.8Corner CasesPlanned
Module 20
SPI Debugging
20.1Wrong SPI ModePlanned20.2Clock Edge ErrorsPlanned20.3CS Timing IssuesPlanned20.4Data CorruptionPlanned20.5Missing BitsPlanned20.6Bit Alignment ErrorsPlanned20.7Waveform DebuggingPlanned
Module 21
SPI Interview Mastery
21.1Beginner QuestionsPlanned21.2Intermediate QuestionsPlanned21.3Advanced QuestionsPlanned21.4Senior QuestionsPlanned
Module 22
SPI vs Other Protocols
22.1SPI vs I²CPlanned22.2SPI vs UARTPlanned22.3SPI vs APBPlanned22.4SPI vs QSPIPlanned22.5SPI vs HyperBusPlanned
Module 23
Industry Case Studies
23.1SPI Flash BootPlanned23.2FPGA ConfigurationPlanned23.3Sensor NetworksPlanned23.4ADC InterfacesPlanned23.5Display ControllersPlanned23.6Embedded SystemsPlanned
Module 24
SPI Design Review Checklist
24.1RTL ChecklistPlanned24.2Verification ChecklistPlanned24.3Timing ChecklistPlanned24.4Integration ChecklistPlanned24.5Debug ChecklistPlanned24.6Interview ChecklistPlanned
Module 25
SPI Misconceptions Engineers Have
25.1"SPI Always Uses 8-Bit Transfers"Planned25.2"SPI Has a Standard Frame Format"Planned25.3"MOSI Always Means Data Write"Planned25.4"SPI Cannot Support Multiple Masters"Planned25.5"CPOL/CPHA Only Affect Idle Clock"Planned25.6"SPI Has Addressing Built In"Planned