HT82K629A

HT82K629A Windows 2000 USB+PS/2 Keyboard Encoder Features · Operating voltage: 4.4V~5.5V · Operating frequency: fSYS=6M · Design for Windows 95/98/NT/2000/XP · Phantom key detection · Low voltage reset function · USB and PS2 modes supported · Auto detect USB or PS2 interface · USB 1.1 low speed function · Supports PS2 code set 1 and code set 2 · Supports multimedia key · Supports ACPI key · Supports mini-keyboard with Fn key · Built-in Watchdog Timer · HALT function and wake-up feature for USB mode to reduce power consumption · 40-pin DIP, 48-pin SSOP packages General Description The HT82K629A can function both in USB and PS2 interface environment. For PS2 interface, it supports IBM PC/AT, IBM PS/2 and all compatible machines and provides a 16-character first-in-first-out buffer in which data Block Diagram is stored. For USB interface, it can support the USB standard request as well as HID class request version 1.1. U S B D + /P S 2 C L K U S B D -/P S 2 D A T A V 33O O SC1 O SC2 VDD VSS 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 R C R eset R e g is te r S e t U S B S e r ia l In te r fa c e E n g in e ( S IE ) & C o n tr o 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 S uspend C o n tro l F IF O s Rev. 1.60 1 June 11, 2008 Pin Assignment C 17 C 16 R3 R2 R1 R0 Fn_S el NUM CAPS S C R O LL C 12 C 13 C 14 C 15 VDD V 33O U S B D + /C L K U S B D -/D A ...