Learn how SPI exchanges combine into complete transactions. Understand SPI read and write operations, multi-byte streaming, header formats, burst transfers, unused signal handling, and performance considerations in embedded and VLSI systems.
SPI Transactions Explained: Read, Write and Multi-Byte Data Transfers Read More »
Learn APB peripheral design with a complete worked APB4 GPIO controller RTL example — register map, PREADY wait states, PSLVERR, PPROT, byte strobes, and synthesisable SystemVerilog implementation.
Designing an APB Peripheral — Complete RTL Example Read More »
Learn APB5 interface parity protection — odd parity scheme, Check_Type property, 14 parity check signals, enable conditions, error detection behaviour, and RTL implementation for safety-critical SoCs.
Learn AMBA APB wake-up and user signalling — PWAKEUP timing for glitch-free clock gating, PAUSER/PWUSER/PRUSER/PBUSER validity windows, timing rules, and APB5 sideband signal recommendations.
Learn AMBA APB operating states — IDLE, SETUP, and ACCESS. Understand APB FSM transitions, signal behaviour, wait states, back-to-back transfers, and complete protocol timing.
Learn APB protection using PPROT and Realm Management Extension (RME). Understand PPROT[2:0], PNSE, privilege levels, secure vs non-secure access, Root/Realm address spaces, and secure peripheral register gating.
AMBA APB Protection Signals — PPROT and PNSE Explained Read More »
Learn how PSTRB write strobes work in AMBA APB. Understand sparse byte-lane writes, bit-to-byte mapping, timing rules, requester/completer compatibility, and practical byte and half-word write examples.
Learn how PSLVERR works in AMBA APB. Understand when PSLVERR is valid, read and write transfer error behavior, timing requirements, register update rules, and how APB errors map to AXI and AHB responses.
Learn how AMBA APB read transfers work in detail. Understand Setup and Access phases, PRDATA timing, PREADY wait-state insertion, read timing behavior, and key differences between APB read and write transfers.
Learn how AMBA APB write transfers work in detail. Understand Setup and Access phases, PREADY wait-state insertion, signal stability requirements, timing behavior, and back-to-back APB write transfers.
