Digilent PmodPS/2 Reference Manual

PmodPS/2™ Reference Manual
Revised May 26, 2016
This manual applies to the PmodPS/2 rev. C
Overview
The Digilent PmodPS/2 is a module that allows users to attach a PS/2 compatible keyboard or mouse to their
system board.
The PmodPS/2.
1

Functional Description

The PmodPS/2 module is a standard PS/2 connector that by nature of the PS/2 supports N-KEY rollover. This is a
feature that guarantees that every movement and key press will be received and addressed. Naturally, whether or
not the key press will actually perform a function is dependent on the software, but the system board will still
receive all of the inputs.
2 Interfacing with the Pmod
The PmodPS/2 communicates with the host board via the GPIO protocol. Both the keyboard and mouse will use a
data and a clock line to communicate their information to the system board. Specific details on how this is done
are available in their respective sections below.
DOC#: 502-094
Other product and company names mentioned may be trademarks of their respective owners.
Features include:

Standard PS/2 port

Jumper to allow for an external power source

Small PCB size for flexible designs 1.0" × 0.8" (2.5 cm ×
2.0 cm)

6-pin Pmod connector with GPIO interface

Follows Digilent Pmod Interface Specification

Example code available in
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