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eSPI Master IP
Design IP
Overview

SmartDV’s eSPI (Enhanced Serial Peripheral Interface) Master IP is a silicon-proven solution that enables reliable and efficient communication with multiple slave devices over a low-pin-count serial bus. Fully compliant with the Intel eSPI specification, it supports key features such as virtual wire signaling, out-of-band messaging, and peripheral channel access, making it ideal for power-optimized system designs.

Designed for flexibility, the IP core is highly configurable to meet specific design requirements, supporting both ASIC and FPGA implementations while optimizing for area, power, and performance. With built-in support for legacy SPI fallback, robust error handling, and advanced configuration options, SmartDV’s eSPI Master IP is well-suited for a wide range of PC, server, and embedded applications.

eSPI Master
Benefits
  • Compact and Scalable Architecture – Supports both Single Master–Single Slave and Single Master–Multiple Slave topologies, enabling flexible system-level deployment
  • Multi-Mode Operation – Enables Single, Dual, and Quad I/O modes for enhanced data throughput and bandwidth utilization
  • Full Channel Support – Implements all four eSPI logical channels: Peripheral, Virtual Wires, OOB, and Flash Access, for complete protocol coverage
  • Robust Reset Handling – Complies with all spec-defined reset types, including Master-to-Slave, Slave-to-Master, and In-Band Reset Command
  • Flexible Baud Rate Control – Supports programmable baud rate selection to match system clocking requirements
  • Spec-Compliant Data Transfers – Handles TX and RX operations according to the eSPI spec, ensuring protocol correctness
  • Comprehensive Protocol Phase Support – Supports Command, Turn-Around, and Response phases as defined by the eSPI transaction model
Compliance and Compatibility
  • Fully compliant with Enhanced Serial Peripheral Interface (eSPI) Specification Rev. 1.5
  • Compatible with all major EDA synthesis, simulation, and linting flows