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PDF KB926D Data sheet ( Hoja de datos )
| Número de pieza | KB926D | |
| Descripción | Keyboard Controller | |
| Fabricantes | ene | |
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KB926D
Keyboard Controller
Data Sheet
Revision 1.1
Dec. 2008
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©2008, ENE Technology Inc. All rights reserved.
Taipei Office
4F, No.88, Bauchiau Rd.
Shindian City, Taipei,
Taiwan, R.O.C.
TEL: 886-2-89111525
FAX: 886-2-89111523
1 page  
KB926D Keyboard Controller Datasheet
CONTENT
CONTENT...............................................................................................................III
1. GENERAL DESCRIPTION ..................................................................................0
1.1 OVERVIEW........................................................................................................0
1.2 FEATURES ........................................................................................................1
1.3 COMPARISON (KB926C VS. KB926D ) ..............................................................6
1.4 BLOCK DIAGRAM ..............................................................................................7
2. PIN ASSIGNMENT AND DESCRIPTION ............................................................8
2.1 KB926D 128-PIN LQFP DIAGRAM TOP VIEW.....................................................8
2.2 KB926D 128 LFBGA BALL MAP......................................................................9
2.3 KB926D PIN ASSIGNMENT SIDE A...................................................................10
2.4 KB926D PIN ASSIGNMENT SIDE B...................................................................11
2.5 KB926D PIN ASSIGNMENT SIDE C...................................................................12
2.6 KB926D PIN ASSIGNMENT SIDE D...................................................................13
2.7 I/O CELL DESCRIPTIONS..................................................................................14
2.7.1 I/O Buffer Table.....................................................................................14
3. PIN DESCRIPTIONS .........................................................................................15
3.1 HARDWARE TRAP ...........................................................................................15
3.2 PIN DESCRIPTIONS BY FUNCTIONS ...................................................................16
3.2.1 Low Pin Count I/F Descriptions. .........................................................16
3.2.2 SPI Flash I/F Descriptions ...................................................................16
3.2.3 PS/2 I/F Descriptions............................................................................16
3.2.4 Internal Keyboard Encoder (IKB) Descriptions .................................17
3.2.5 SMBus Descriptions ............................................................................17
3.2.6 FAN Descriptions .................................................................................17
3.2.7 Pulse Width Modulation (PWM) Descriptions ....................................17
3.2.8 Analog-to-Digital Converter Descriptions ..........................................17
3.2.9 Digital-to-Analog Converter Descriptions ..........................................17
3.2.10 8051 External I/F Descriptions ..........................................................18
3.2.11 External Clock Descriptions..............................................................18
3.2.12 Miscellaneous Signals Descriptions ................................................18
3.2.13 Power Pins Descriptions ...................................................................18
Copyright©2008, ENE Technology Inc.
iii
5 Page 
KB926D Keyboard Controller Datasheet
1.2 Features
LPC Low Pin Count Interface
SIRQ supporting IRQ1, IRQ12, SCI or SMI# interrupt and one programmable
IRQ provided.
I/O Address Decoding:
Legacy KBC I/O port 60h/64h
Programmable EC I/O port, 62h/66h(recommend)
I/O port 68h/6Ch (sideband)
2 Programmable 4-byte Index-I/O ports to access internal EC registers.
1 Programmable extended (debug) port I/O.
Memory Decoding:
Firmware Hub decode
LPC memory decode
Compatible with LPC specification v1.1
X-bus Bus Interface (XBI) : Flash Interface
SPI flash is supported, size up to 4MB.
SPI frequency supports 33/45/66MHz.
New SPI command (dual read) to enhance the performance.
The 64KB code memory can be mapped into system memory by one 16KB and
one 48KB programmable pages independently.
Support SPI flash in-system-programming via IKB pins.
Enhanced pre-fetch mechanism.
8051 Microprocessor
Compatible with industrial 8051 instructions with 3 cycles.
8051 runs at 8/16/22 MHz, programmable.
128 bytes internal RAM.
24 extended interrupt sources.
Two 16-bit timers.
Full duplex UART integrated.
Supports idle and stop mode.
Enhanced embedded debug interface.
Copyright©2008, ENE Technology Inc.
1
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