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PDF EKK8011AB Data sheet ( Hoja de datos )
| Número de pieza | EKK8011AB | |
| Descripción | USB & PS/2 Keyboard Encoder | |
| Fabricantes | ELAN Microelectronics | |
| Logotipo |  |
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eKK8011AB
Product
Specification
DOC. VERSION 1.4
ELAN MICROELECTRONICS CORP.
July 2006
1 page  
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eKK8011AB
USB and PS/2 Keyboard Encoder
1 General Description
The eKK8011A/eKK8011B series are high performance CMOS microcontroller devices
specially designed for keyboard encoder applications. These devices function both in
USB and PS/2 interface environment. For PS/2 interface, it supports IBM PC AT and
all compatible machines and provides a 16-character first-in-first-out buffer in which
data is stored. For USB interface, it supports the USB standard request version 1.1 as
well as HID class request version 1.1.
The eKK8011A/B controls all scan codes, three LED status, scan timing and
communications between the keyboard and PC. Enhanced features combine to
ensure easy implementation of a high performance, low cost keyboard with minimal
external components.
The eKK8011A MCU is compatible with EM78M611 and the eKK8011B MCU is
compatible with EM78611.
2 Features
USB Specification Compliance
• Universal Serial Bus Specification Version 1.1
• USB Device Class Definition for Human Interface Device (HID), Firmware
Specification Version 1.1
Low cost : no external components required
Operating frequency: 6MHz
Phantom key detection
Support scan code Set 1, 2 and 3 for PS/2
Support HID Usage ID for USB
Support PC PS/2 and USB keyboard
Support USB Sleep Mode
Low power CMOS device technology
Internal pull-up resistor
Tri-state outputs for easy board application
Support Windows1 TM 95, 98, 2000, ME keys
Support multi-media or other special application keyboard encoder
3 Applications
USB Keyboard only
Both USB and PS/2 compatible Keyboards
1 Windows is a registered trademark of Microsoft Corporation.
Product Specification (V1.4) 07.10.2006
(This specification is subject to change without further notice)
•1
5 Page 
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eKK8011AB
USB and PS/2 Keyboard Encoder
Enable (Hex F4)
- Responds with ACK
- Clears output buffer
- Clears last typematic key
- Start scanning
Default Disable (Hex F5)
- Responds with ACK
- Resets all conditions to power-on state
- Clears output buffer
- Sets the default key type (Scan Code Set 3 only)
- Set the default typematic rate/delay
- Clears the last typematic key
- Stops scanning
Set Default (Hex F6 )
- Responds with ACK
- Resets all conditions to power-on state
- Clears output buffer
- Sets the default key type (Scan Code Set 3 only)
- Set the default typematic rate/delay
- Clears last typematic key
- Continues scanning
Set All Keys (Hex F7, F8, F9, FA)
- Responds ACK
- Clears output buffer
- Sets all key type (affect only Scan Code Set 3 operation)
F7 : Typematic
F8 : Make/Break
F9 : Make
FA : Typematic/Make/Break
- Returns to previous scanning rate
Set Key Type (Hex FB, FC, FD)
- Responds with ACK
- Clears output buffer
- Receives key ID byte
- Responds ACK
- Sets key ID type (affect only Scan Code Set 3 operation)
Product Specification (V1.4) 07.10.2006
(This specification is subject to change without further notice)
•7
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet EKK8011AB.PDF ] | |
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