MEC1404 Datasheet, PDF (216/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
13.0 MAILBOX INTERFACE
13.1 Overview
The Mailbox provides a standard run-time mechanism for the host to communicate with the Embedded Controller (EC)
13.2 References
No references have been cited for this feature.
13.3 Terminology
There is no terminology defined for this section.
13.4 Interface
This block is designed to be accessed externally via the pin interface and internally via a registered host interface.
FIGURE 13-1:
I/O DIAGRAM OF BLOCK
Host Interface
Power, Clocks and Reset
Mailbox Interface
Signal Description
Interrupts
13.5 Signal Description
TABLE 13-1: SIGNAL DESCRIPTION TABLE
Name
nSMI
Direction
OUTPUT
Description
SMI alert signal to the Host.
13.6 Host Interface
The Mailbox interface is accessed by host software via a registered interface, as defined in Section 13.11, "Runtime
Registers" and Section 13.12, "EC-Only Registers".
DS00001956D-page 216
 2015 - 2016 Microchip Technology Inc.