MEC1322 Datasheet, PDF (162/456 Pages) Microchip Technology – Keyboard and Embedded Controller for Notebook PC

MEC1322
12.0 MAILBOX INTERFACE
12.1 Overview
The Mailbox provides a standard run-time mechanism for the host to communicate with the Embedded Controller (EC)
12.2 References
No references have been cited for this feature.
12.3 Terminology
There is no terminology defined for this section.
12.4 Interface
This block is designed to be accessed externally via the pin interface and internally via a registered host interface.
FIGURE 12-1:
I/O DIAGRAM OF BLOCK
Host Interface
Power, Clocks and Reset
Mailbox Interface
Signal Description
Interrupts
12.5 Signal Description
TABLE 12-1: SIGNAL DESCRIPTION TABLE
Name
Direction
Description
nSMI
OUTPUT SMI alert signal to the Host.
12.6 Host Interface
The Mailbox interface is accessed by host software via a registered interface, as defined in Section 12.11, "Runtime
Registers" and Section 12.12, "EC-Only Registers".
12.7 Power, Clocks and Reset
This section defines the Power, Clock, and Reset parameters of the block.
DS00001719D-page 162
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