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PDF KB3920 Data sheet ( Hoja de datos )
| Número de pieza | KB3920 | |
| Descripción | Keyboard Controller | |
| Fabricantes | ENE | |
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KB3920
Keyboard Controller
Datasheet
Revision 0.8
Jun. 2006
ENE RESERVES THE RIGHT TO AMEND THIS DOCUMENT WITHOUT NOTICE AT ANY TIME. ENE
ASSUMES NO RESPONSIBILITY FOR ANY ERRORS APPEAR IN THE DOCUMENT, AND ENE DISCLAIMS
ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF ENE PRODUCTS
INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, OR
INFRINGEMENT OF ANY PATENTS, COPYRIGHTS OR OTHER INTELLECTUAL PROPERTY RIGHTS.
Headquarters
4F-1, No.9, Prosperity Rd.,
Science-based Industrial Park,
Hsinchu City, Taiwan, R.O.C
TEL: 886-3-6662888
FAX: 886-3-6662999
http://www.ene.com.tw
Copyright©2006, ENE Technology Inc. All rights reserved.
Taipei Office
9F, No.88, Bauchiau Rd.
Shindian City, Taipei,
Taiwan, R.O.C.
TEL: 886-2-89111525
FAX: 886-2-89111523
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1. Features
KB3920 Keyboard Controller Datasheet
1.1 Feature Summary
Ø Low Pin Count Host Interface (LPC)
n SIRQ supporting IRQ1, IRQ12, SCI or SMI# interrupt
n I/O Address Decoding:
l KBC IO Port 60h/64h
l Programmable EC IO Port 62h/66h
l Programmable 4-byte Index I/O ports to access internal registers
l One Programmable I/O write byte-address decoding (for example, it can be
used to decode Port_80h)
n Support CLKRUN# as a slave device
Ø X-Bus Bus Interface (XBI)
n Interfaces to ISA-Type memory and I/O devices
n Addressable memory range up to 2MB
n The 64K code memory of 8051 can be mapped onto 2 independent 16KB pages
n 2 SELIO# for expended IO (XIO) by directly connecting to TTL (74373, 74244)
Ø 8051 Microprocessor
n Industry 8051 Instruction set complaint with 3~5 cycles per instruction.
n Programmable 4/8/16 MHz clock
n Fast instruction fetching from XBI Interface
n 128 bytes and 2KB tightly-coupled SRAM
n Twenty-four extended interrupt sources
n Two 16-bit tightly-coupled Timers
Ø 8042 Keyboard Controller
n 8 Standard keyboard commands processed by hardware
n Each hardware command can be optionally processed by firmware
Ø PS/2 Controller
n External PS/2 device operation in firmware mode operation (no hardware mode
available)
n Support three external PS/2 devices
n Optimized hardware for firmware processing
Copyright©2006, ENE Technology Inc.
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2.2 169 GBA Diagram Top View
KB3920 Keyboard Controller Datasheet
Copyright©2006, ENE Technology Inc.
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