MEC1404 Datasheet, PDF (400/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
29.0 PS/2 INTERFACE
29.1 Introduction
The PS/2 Interface may be used to communicate with a PS/2 keyboard or a PS/2 mouse. The physical interface pro-
vides the clock and data signaling for PS/2 data transfers. The PS/2 Controllers are directly controlled by the EC. The
hardware implementation eliminates the need to bit bang I/O ports to generate PS/2 traffic, however bit banging is avail-
able via the associated GPIO pins.
29.2 References
No references have been cited for this feature.
29.3 Terminology
There is no terminology defined for this section.
29.4 Interface
This block is designed to be accessed externally via the pin interface and internally via a registered host interface.
FIGURE 29-1:
I/O DIAGRAM OF BLOCK
Host Interface
Power, Clocks and Reset
PS/2 Interface
Signal Description
Interrupts
DS00001956D-page 400
 2015 - 2016 Microchip Technology Inc.