MEC1404 Datasheet, PDF (132/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
5.0 ENHANCED SERIAL PERIPHERAL INTERFACE (ESPI)
5.1 Introduction
The Intel® Enhanced Serial Peripheral Interface (eSPI) is used by the system host to configure the chip and communi-
cate with the logical devices implemented in the design through a series of read/write registers. It is Intel’s successor to
the Low Pin Count (LPC) bus, used in previous devices to provide System Host access to devices internal to the Embed-
ded Controller.
5.2 References
1. Intel, Enhanced Serial Peripheral Interface (eSPI): Interface Specification (for Client Platforms)
2. Microchip “eSPI Controller” Specification, DS00000A
3. MEC140x/1x eSPI Addendum
DS00001956D-page 132
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