PS2 to USB 鼠标

This Technical Brief details the translation of a PS/2
®
mouse to a USB mouse using the PIC16C745/765. The
PIC16C745/765 is Microchip’s low-speed USB micro-
controller. All of the USB descriptors for the mouse
translator are listed in the tables in Appendix A:
“Device Descriptors” . A detailed byte-by-byte
description is given for each descriptor to assist USB
peripheral designers in understanding USB descrip-
tors. For the basics of USB descriptors, refer to TB054,
“An Introduction to USB Descriptors with a Game Port
to USB Game Pad Translator Example”.
TB055
PS/2 to USB Mouse Translator
IMPLEMENTATION
Author: Reston Condit
Microchip Technology Inc.
Hardware
The PS/2 port is a 6-pin DIN. Only four pins are used:
OVERVIEW Ground
This Technical Brief details the translation of a PS/2 Power
mouse to a USB mouse using the PIC16C745/765. The Clock
PIC16C745/765 is