82M98A

HT82M98A 3D USB+PS2 Mouse Features · · · · · · Complete Universal Serial Bus specs V1.0 compatibility Serial Bus Interface Engine (SIE) USB transceiver Microsoft 3D Intelli mouse and IBM PS/2 mouse compatible Supports three buttons (R, M, L) and three axes (X, Y, Z) 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 18-pin DIP package General Description HT82M98A is a 3D mouse controller especially designed for USB and PS/2 applications. The HT82M98A can support the USB Standard Request as well as HID Class Request version 1.0 draft 4. It is compatible with Microsoft Intelli 3D PS/2 mouse. The X/Y axis photo input with built-in Holtek¢s special dynamic photo-input resistor and Z axis can support two kinds of scroller input, namely; optomechanical and mechanical. It requires minimal external components to implement 3D USB plus PS/2 mouse. It can be briefly described as a Holtek 8-bit mC with an on-chip USB interface logic. The USB is specified by the Universal Serial Bus Specification V1.0. 1 June 14, 2000 HT82M98A Block Diagram U S B T r a n s c e iv e r U S B R e c e iv e r U S B In te rfa c (S a C o L o S e r ia l e E n g in e IE ) n d n tro l g ic R e g is te r S e t U S B D + U S B D - U S B T r a n s m itte r H o...