Keyboard Decoder DOC. VERSION ELAN MICROELECTRONICS CORP.
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eKK6111
Keyboard Decoder
DOC. VERSION
ELAN MICROELECTRONICS CORP.
November 2002
Trademark Acknowledgments: registered trademark PS/2 trademark IBM. Windows trademark Microsoft Corporation. ELAN ELAN logo trademarks ELAN Microelectronics Corporation.
Copyright 2005 ELAN Microelectronics Corporation
Rights Reserved
Printed Taiwan
contents this specification subject change without further notice. ELAN Microelectronics assumes responsibility concerning accuracy, adequacy, completeness this specification. ELAN Microelectronics makes commitment update, keep current information material contained this specification. Such information material change conform each confirmed order. event shall ELAN Microelectronics made responsible claims attributed errors, omissions, other inaccuracies information material contained this specification. ELAN Microelectronics shall liable direct, indirect, special incidental, consequential damages arising from such information material. software any) described this specification furnished under license nondisclosure agreement, used copied only accordance with terms such agreement. ELAN Microelectronics products intended life support appliances, devices, systems. ELAN Microelectronics product such applications supported prohibited. PART THIS SPECIFICATION REPRODUCED TRANSMITTED FORM MEANS WITHOUT EXPRESSED WRITTEN PERMISSION ELAN MICROELECTRONICS.
ELAN MICROELECTRONICS CORPORATION
Headquarters: Innovation Road Hsinchu Science Park Hsinchu, Taiwan 30077 Tel: +886 563-9977 Fax: +886 563-9966 http://www.emc.com.tw Hong Kong: Elan (HK) Microelectronics Corporation, Ltd. 1005B, 10/F Empire Centre Mody Road, Tsimshatsui Kowloon HONG KONG Tel: +852 2723-3376 Fax: +852 2723-7780 elanhk@emc.com.hk Shenzhen: Elan Microelectronics Shenzhen, Ltd. SSMEC Bldg., Gaoxin Ave. Shenzhen Hi-Tech Industrial Park Shenzhen, Guandong, CHINA Tel: 2601-0565 Fax: 2601-0500 USA: Elan Information Technology Group 1821 Saratoga Ave., Suite Saratoga, 95070 Tel: 366-8223 Fax: 366-8220
Europe: Elan Microelectronics Corp. (Europe) Siewerdtstrasse 8050 Zurich, SWITZERLAND Tel: 299-4060 Fax: 299-4079 http://www.elan-europe.com
Shanghai: Elan Microelectronics Shanghai Corporation, Ltd. 23/Bldg. #115 Lane 572, Bibo Road Zhangjiang Hi-Tech Park Shanghai, CHINA Tel: 5080-3866 Fax: 5080-4600
Contents
Contents
General Description Features Application. Assignment Descriptions. Function Descriptions Decoder Buffer Power-on Reset Self Test Decoder Data Output Decoder Data Input Device Command From System
6.6.1 6.6.2 6.6.3 6.6.4 6.6.5 6.6.6 6.6.7 6.6.8 6.6.9 6.6.10 6.6.11 6.6.12 6.6.13 Set/Reset Status Indicators (Hex Echo (Hex EE).4 Invalid commands (Hex F1).4 Select Alternate Scan Code (Hex Read (Hex Typematic Rate/Delay (Hex F3).5 Enable (Hex Default Disable Default (Hex F6).6 Keys (Hex Type FB,FC,FD Resend Reset Acknowledge Completion Code Failure Code Echo Keyboards 83AB Keyboard buffer Overrun Resend
Command System.
6.7.1 6.7.2 6.7.3 6.7.4 6.7.5 6.7.6 6.7.7
Keyboard Scan Code Table Scan Code Scan Code Scan Code codes scan codes scan codes scan
Product Specification (V1.0) 11.15.2002
Contents
Windows 2000 Multi-Media code. Absolute Maximum Ratings Electrical Characteristics Electrical Characteristics Timing Diagrams Application Circuit
Product Specification (V1.0) 11.15.2002
Contents
Specification Revision History
Doc. Version Revision Description Preliminary version Date 2002/11/15
Product Specification (V1.0) 11.15.2002
Contents
Product Specification (V1.0) 11.15.2002
eKK6111 Keyboard Decoder
General Description
keyboard system, that divided into parts (the transmitter receiver). eKK6111 micro-controller dedicated keyboard decoder single channel module. eKK6111 decode data from module, control scan codes, three LEDs status communication with That specially designed compatible machines.
eKK6111
Module
Module
eKK6111 Keyboard Transmitter Receiver
PS/2 Compatible
Features
Cost eliminate need external components Resonator Oscillator (4.00MHz) Support scan code Support PS/2 keyboard Support WINDOWS 2000 keys. 104/107 with multi-media other special application keyboard encoder. demodulation tolerance: Using device identify which transmitter connected. switch select. sets Random generate (255 sets store EEPROM (93LC46) Package: 28-pins PDIP, 28-pins
Application
eKK6111 support single channel channels Receiver module. compatible machine keyboard PS/2 compatible machine keyboard
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decorder
Assignment
/INT DO/ID0 DI/ID1 SK/ID2 CONN eKK6111 /RESET OSCI OSCO DATAO CLKO DATAI CLKI RxLED SCROLL NUMS CAPS
Descriptions
Symbol OSCI OSCO Function Connect with data receiver module connection Switch Device connect with EEPROM Switch Device connect with EEPROM Switch Device connect with EEPROM Connect with EEPROM Connect with push bottom Caps Lock Indicator Lock Indicator Scroll Lock Indicator data receive Indicator CLOCK line communication, internal pull high DATA line communication, internal pull high CLOCK line communication, internal open-drain DATA line communication, internal open-drain Connect with 4.00MHz resonator oscillation CLOCK Output Power supply Ground
Function Descriptions
Decoder Buffer
decoder will buffer bytes first-in-first-out order when system able read scan codes from receiver module. response codes repeated codes will buffered. receives multiple-byte sequence, entire sequence must into buffer data discarded buffer-overrun condition occurs.
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decoder
Power-on Reset Self Test
duration decoder Power-on-Reset (POR) should within milliseconds seconds after power applied decoder. After executing POR, receiver executes self test. LEDs turned beginning self test. self test takes minimum milliseconds maximum milliseconds. self test successful, completion code sent system decoder starts read decode data from module. self test fails, error code sent, decoder disabled waits command from system. completion codes sent between milliseconds seconds after POR, between milliseconds after RESET command acknowledged.
Decoder Data Output
When decoder ready send data system, first checks clock data lines. either state, data stored buffer. both high state, decoder starts clocking data out. Data will valid before trailing edge after leading edge clock pulse. During transmissions decoder checks clock line least microseconds. system lowers clock lines before leading edge 10th clock, decoder should stop sending, then buffer data return clock data high state.
Decoder Data Input
When system ready send data decoder, first checks line decoder sending data. decoder sending data sending data reached 10th clock, system inhibit interface forcing clock line more than microseconds prepares send data. decoder checks clock line status least every milliseconds. system Request Send (RTS) detected, decoder clocks bits After 10th bit, decoder checks high state data line then pulls clocks more signal system that data been received. data after 10th bit, indicates frame error. decoder should continue count until data line goes high, then pulls issues RESEND system.
Device
EM83110A support device mode: Controllable mode: Using bits switch control device Random generate mode: Using push bottom entry device mode. EM83110A will receives seconds device after push bottom pressed. When reset, device will recovery from EEPROM.
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decorder
Command From System
system send commands decoder time. decoder needs respond within milliseconds, unless system prevents decoder output, when doing self test executing RESET. following decoder input commands actions that decoder needs take.
6.6.1 Set/Reset Status Indicators (Hex
Responds ACK. Receives option byte. Responds ACK. Updates status indicators. Return previous scanning state.
6.6.2 Echo (Hex
Responds with hex. Returns previous scanning state.
6.6.3 Invalid commands (Hex
Responds with hex. Returns previous scanning state.
6.6.4 Select Alternate Scan Code (Hex
Responds ACK. Clears output buffer. Sets default typematic rate/delay. Clears last typematic key. Receives options key. Responds ACK. Option byte selects scan code selects scan code selects scan code Returns previous scanning state.
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decoder
6.6.5 Read (Hex
Responds with ACK. Discontinues scanning. Sends Bytes. second byte will sent within after first byte. Resumes scanning.
6.6.6 Typematic Rate/Delay (Hex
Responds ACK. Receives rate/delay value byte. Responds ACK. rate/delay Note1) Returns previous scanning state.
NOTE Repeat period (8+A) (2B) 0.00417 seconds binary value bits binary value bits Delay (C+1) milliseconds binary value bits always
00000 00001 00010 00011 00100 00101 00110 00111 01000 01001 01010 01011 01100 01101 01110 01111
Typematic rate 30.0 26.7 24.0 21.8 20.0 18.5 17.1 16.0 15.0 13.3 12.0 10.9 10.0
10000 10001 10010 10011 10100 10101 10110 10111 11000 11001 11010 11011 11100 11101 11110 11111
Typematic rate
default rate 10.9 chars/sec Default delay
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decorder
6.6.7 Enable (Hex
Responds with ACK. Clears output buffer. Clears last typematic key. Start scanning.
6.6.8 Default Disable
Responds with ACK. Reset conditions power-on state. Clears output buffer. Sets default type (scan code only) default typematic rate/delay. Clears last typematic key. Stops scanning.
6.6.9 Default (Hex
Responds with ACK. Resets conditions power-on state. Clears output buffer. Sets default type (scan code only) default typematic rate/delay. Clears last typematic key. Continues scanning.
6.6.10 Keys (Hex
Responds ACK. Clear output buffer. type (affect only code operation). Typematic Make/Break Make Typematic/Make/Break Returns previous scanning rate.
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decoder
6.6.11 Type FB,FC,FD
Responds ACK. Clears output buffer. Receives byte Responds ACK. Sets type (affect only scan code operation). Typematic Make/Break Make Returns previous scanning rate.
6.6.12 Resend
Sends previous output again. previous byte RESEND, last byte before RESEND shall sent.
6.6.13 Reset
Responds ACK. Checks clock data lines high state least microseconds receives another command. Default scan code
Command System
following keyboard output commands.
6.7.1 Acknowledge
keyboard sends acknowledge response valid command from system except RESEND ECHO.
6.7.2 Completion Code
This command issued after successful completion keyboard self test.
6.7.3 Failure Code
failure occurs, keyboard sends this code discontinues scanning, waits system response reset.
6.7.4 Echo
keyboard sends this code response ECHO command.
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decorder
6.7.5 Keyboards 83AB
byte issued respond READ command. byte sent first, followed high byte.
6.7.6 Keyboard buffer Overrun
keyboard buffer overflows, overrun code will replace last byte buffer. keyboard using scan code code sets code
6.7.7 Resend
When keyboard receives invalid input input with incorrect parity, RESEND command sent.
Keyboard Scan Code Table
keyboard contains scan code sets. system defaults scan switched following tables show numbers three scan code sets hexadecimal values. keys typematics except pause key. When pressed down, make scan code sent system. When released, break code sent. more keys held down, only last pressed repeats typematic rate. Typematic operation stops when last pressed released, even other keys being released some other keys still held down. following table shows three scan code sets used keyboard.
Scan Code
`(~) Back Space Make code Break code SHIFT_R CTRL_L ALT_L SPACE ALT_R Make code Break code
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decoder
Caps ENTER SHIFT_L Make code Break code CTRL_R (DEL) (ENTER) SCROLL Make code Break code
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decorder
LEFT HOME DOWN PAGE PAGE DOWN RIGHT
Base Case,or Shift Lock Make/Break
Shift Case Make/Break
Lock Make/Break
Scan Code Make/Break
Shift Case Make/Break
Scan Code Make/Break
Ctrl Case, Shift Case Make/ Break
Case Make/Break
PAUSE
Make Code
Ctrl Pressed
NOTE @1101-key keyboard only. 102-key keyboard only. left Shift held down, AA/2A shift male break sent with other scan codes. right Shift held down, B6/36 sent. both Shift keys down, both sets codes sent with other scan code. This typematic. associated scan codes occur make key.
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decoder
Scan Code
`(~) Back Space Caps ENTER SHIFT_L Make code Break code SHIFT_R CTRL_L ALT_L SPACE ALT_R CTRL_R (DEL) (ENTER) SCROLL Make code Break code
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decorder
LEFT HOME DOWN PAGE PAGE DOWN RIGHT
Base Case,or Shift Lock Make/Break
Shift Case Make/Break
Lock Make/Break
Scan Code Make/Break
Shift Case Make/Break
Scan Code Make/Break
Ctrl Case, Shift Case Make/ Break
Case Make/Break
PAUSE
Make Code
Ctrl Pressed
NOTE 101-key keyboard only 102-key keyboard only left Shift held down, 12/12 shift male break sent with other scan codes. right Shift held down, 59/59 sent. both Shift keys down, both sets codes sent with other scan code. This typematic. associated scan codes occur make
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decoder
Scan Code
`(~) -(_) =(+) Back Space Caps ENTER SHIFT_L SHIFT_R CTRL_L ALT_L Make Code Break Code Default State Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Make/Break Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Make/Break Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Make/Break Make/Break Make/Break
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decorder
SPACE ALT_R CTRL_R LEFT HOME DOWN PAGE PAGE DOWN RIGHT (DEL) (ENTER) PRINT SCROLL PAUSE Make Code Break Code Default State Typematic Make only Make only Make only Typematic Typematic Make only Make only Typematic Typematic Make only Make only Typematic Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Typematic Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only
NOTE 101-key keyboard only 102-key keyboard only
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decoder
codes scan
WIN_L WIN_R N-CHG (131) (132) ROMA (133) K107 POWER SLEEP WAKE Make Break
codes scan
WIN_L WIN_R N-CHG (131) (132) ROMA (133) K107 POWER SLEEP WAKE Make Break
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decorder
codes scan
WIN_L WIN_R N-CHG (131) (132) ROMA (133) K107 POWER SLEEP WAKE Make Break Make/break Make/break Make/break Make Make Make Typematic Typematic Typematic
Windows 2000 Multi-Media code.
SET1 MAKE K130 K131 K132 K133 K134 K135 K136 K137 K138 K139 K140 K141 K142 K143 K144 K145 K146 K147 Back Forward Stop Refresh Search Favorites Web/Home Mail Mute VolumeVolume+ Play/Pause Stop PreTrack NextTrack Media Select MyComputer Calculator BREAK SET2 MAKE BREAK
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decoder
Absolute Maximum Ratings
Parameter Symbol TOPR TSTR VOUT Ratings -0.3V -0.3V
Temperature under bias Storage temperature Input Voltage Output Voltage
Electrical Characteristics
Symbol VIHT VILT VIHX VILX VOH1 VOL1 VOL2 ISB1 ICC1 Parameter Input Leakage current Input High Voltage Input Voltage Input high threshold voltage Input threshold voltage Clock Input High voltage Clock Input voltage Output High voltage (Ports 5,6,7) Output Voltage (Ports 5,6) Output voltage (Ports Pull-high current Power-down current Operating supply current (VDD=5.0V) cycles/two clocks Condition VIN=VDD, Ports Ports /RESET, TCC, /RESET, TCC, OSCI OSCI IOH=-10.0mA IOL=9.0mA IOL=14.0mA Pull-high active, input input pins VDD, output floating, enabled /RESET=High, Fosc=4.00Mhz (HLF="1", CK2="0"), output floating, enabled -100 -240 Min. Typ. Max. Unit
Electrical Characteristics
Parameter Time from DATA transition falling edge Time from rising DATA transition Duration inactive Duration active Time auxiliary device inhibit after clock ensure auxiliary device does start another transmission Time from inactive active transition, used time when auxiliary device sample DATA System clock Sym. FCLK 4.00 Min. Typ. Max. T4-5 Unit.
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decorder
Timing Diagrams
10th 11th
DATA
StartBit
Bit0
Bit1
Parity
StopBit
Fig.1 Keyboard output data timings
Inhibit
10th
11th
DATA
StartBit
Bit0
Bit1
Bit8
Parity
StopBit
Fig.2 Keyboard input data timing
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decoder
Application Circuit
/INT DO/ID0 DI/ID1 SK/ID2 CONN eKK6111 /RESET OSCI OSCO DATAO CLKO DATAI CLKI RxLED SCROLL NUMS CAPS 4.00Mhz 20pF 4.7Kohm 4.7Kohm 20pF DATA 330ohm RxLED 330ohm SCROLL 330ohm 330ohm CAPS PS2/KB
Data
Device
Fig.1 Switch mode
/INT DO/ID0 DI/ID1 SK/ID2 CONN eKK6111 CONNECT /RESET OSCI OSCO DATAO CLKO DATAI CLKI RxLED SCROLL NUMS CAPS 4.00Mhz 20pF
4.7Kohm 4.7Kohm 20pF DATA 330ohm RxLED 330ohm SCROLL 330ohm 330ohm CAPS PS2/KB
Data 93C46
100Kohm
Clear EEPROM
Fig.2 EEPROM mode
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
eKK6111 Keyboard Decorder
Product Specification (V1.0) 11.15.2002
(This specification subject change without further notice)
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