HT82M22 Datasheet, PDF (1/6 Pages) Holtek Semiconductor Inc – 5-Key 3D USB+PS/2 Optical Mouse Controller

HT82M22A
5-Key 3D USB+PS/2 Optical Mouse Controller
Features
· Operating voltage: 4.4V~5.25V
· Compatible with Microsoft Windows 2000 and
5-button Wheel Mouse
· Complete Universal Serial Bus specs V1.1
compatibility
· Serial Bus Interface Engine (SIE)
· USB transceiver
· Microsoft 3D Intelli mouse and IBM PS/2 mouse
compatible
· Supports five buttons and Z-axes input
· Z-axis can support two kinds of scroller input
(optomechanical and mechanical)
· Single chip solution especially for USB mouse
function
· HALT function and wake-up feature reduce power
consumption
· Plug and Play functions
· Minimal external components
· 6MHz crystal oscillator for system clock
· Interface compliant with ADNS-2051, ADNS-2610
and ADNS-2620
· Pass WHQL, USB-IF and EMC testing
· 20-pin DIP package
General Description
HT82M22A is a Plug and Play Windows 2000 and
5-button 3D USB+PS/2 Mouse controller. The
HT82M22A can support the USB Standard Request as
well as HID Class Request version 1.1. It is compatible
with Microsoft Intelli 3D PS/2 mouse. The Z-axis can
support two kinds of scroller input, namely; mechanical
and optomechanical. It requires minimal external com-
ponents to implement 3D USB plus PS/2 mouse. All its
features combined and make up this versatile Holtek
8-bit MCU with an on-chip USB interface logic. The
USB is specified by the Universal Serial Bus Specifica-
tion V1.1.
Block Diagram
USBD+
USBD-
V 33O
O SC1
O SC2
USB
T r a n s c e iv e r
USB
R e c e iv e r
USB
T r a n s m itte r
V o lta g e
R e g u la to r
C lo c k
G e n e ra to r
RC
RESET
R e g is te r
S et
U S B S e r ia l
In te r fa c e E n g in e
(S IE )
and
C o n tro l
L o g ic
H o lte k
8 - b it
M ic r o c o n tr o lle r
M a in
S ta te m a c h in e
F IF O s ´ 2
S u s p e n s io n
VDD
C o n tro l
VSS
Rev. 1.10
1
August 4, 2004