USB-Adapt™ SH3301

IC Converts PS/2 Data to USB

Semtech is a registered trademark of Semtech

Corporation. USB-Adapt is a trademark of

Semtech Corporation. All other trademarks

belong to their respective companies.

Copyright ©1999-2002 Semtech Corporation

SH3301-DS-101

www.semtech.com

1

HID & SYSTEM MANAGEMENT PRODUCTS, SYSTEM MANAGEMENT FAMILY

DESCRIPTION

FEATURES

• System legacy support

The USB-Adapt™ SH3301 is a

single IC that converts PS/2

keyboard and mouse data to

USB 1.1.

The USB-Adapt™ is ideal for

system legacy support, enabling

seamless connection of standard

PS/2 devices (mice or keyboards)

to USB.

The IC offers two hot-pluggable

and hot-swappable PS/2 ports;

either port can accept a mouse or

a keyboard. In addition, the USB-

Adapt™ auto-detects and

transparently supports the wheel

function of wheel mice.

• Devices are hot-pluggable

• PS/2 ports are auto-selectable and

hot-swappable – a mouse or

keyboard can be used in either

port

• Easy to implement

• Few external components required

• Interfaces PS/2 devices to USB

• Complies with USB 1.1

specification

• Provides two PS/2 ports

• PS/2 ports support mouse wheel

functionality

• Works with standard Windows

keyboard and mouse drivers

N/C

N/C

N/C

N/C

VDD

VSS1

XOUT

XIN

VSS

EPS2CLK0

EPS2DAT0

1

2

3

4

5

6

7

8

9

10

11

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

33

32

31

30

29

28

27

26

25

24

23

SH3301FB

QFP

APPLICATIONS

PIN ASSIGNMENTS

PRELIMINARY