|
LIZE |
Shenzhen LIZE Electronic Technology Co., Ltd
SPECIFICATION
LG83053F-V3
Keyboard Encoder
Version 1.0
reserves the right to change this documentation without prior notice.
Tel:86-755-8835 3502/03/04 Fax:86-755-8835 3509
LG83053F-V3
Website:http://www.lizhiic.com
PS/2 Keyboard Encoder
TABLE OF CONTENTS
1. GENERAL DESCRIPTION.................................................................................................. 3
2. FEATURES.............................................................................................................................3
3. APPLICATION....................................................................................................................... 3
4. PIN ASSIGMENT...................................................................................................................4
5. ABSOLUTE MAXIMUM RATINGS.....................................................................................4
6. DC CHARACTERISTICS..................................................................................................... 4
7. AC CHARACTERISTICS..................................................................................................... 5
8. BLOCK DIAGRAM................................................................................................................5
9. FUNCTION DESCRIPTIONS.............................................................................................. 6
9.1 POWER-ON-RESET AND SELF-TEST...............................................................6
9.2 KEYBOARD BUFFER.............................................................................................6
9.3 LOW VOLTAGE RESET (LVR)............................................................................. 6
9.4 COMMAND DESCRIPTION.................................................................................. 7
9.4.1 COMMAND FROM THE SYSTEM............................................................. 7
9.4.2 COMMAND TO THE SYSTEM..................................................................11
9.4.3 DATA COMMUNICATION VIA SERIAL PORT.......................................11
9.5 KEYBOARD SCAN CODE TABLE.....................................................................12
9.6 TURBO FUNCTION.............................................................................................. 22
9.7 INTERNAL-MULTIKEY FUNCTION...................................................................22
10. TIMING DIAGRAM............................................................................................................22
11. APPLICATION CIRCUIT.................................................................................................. 23
12. APPLICATION MATRIX................................................................................................... 24
13. PAD DIAGRAM..................................................................................................................25
14. REVISION HISTORY........................................................................................................ 25
reserves the right to change this documentation without prior notice Page 2 of 26
|