Contents
Contents
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General Description ................................................................................................ 1
Features ................................................................................................................... 1
Applications............................................................................................................. 1
Pin Assignment ....................................................................................................... 2
Pin Description........................................................................................................ 3
Function Description............................................................................................... 4
6.1 PS/2 Keyboard Function Description ................................................................4
6.1.1 Keyboard Buffer ..................................................................................................4
6.1.2 Power-on Reset and Self Test.............................................................................4
6.1.3 Keyboard Data Output.........................................................................................4
6.1.4 Keyboard Data Input ...........................................................................................5
6.1.5 Command from the System ................................................................................5
6.1.6 System Commands.............................................................................................8
6.1.7 Keyboard Scan Code Table.................................................................................9
6.2 USB Keyboard Function Description...............................................................19
6.2.1 USB Keyboard Description ...............................................................................19
6.2.2 LED Report for USB Keyboard .........................................................................22
6.2.3 USB Keyboard Scan Code................................................................................22
6.3 Internal-Multi Function ....................................................................................25
Absolute Maximum Ratings.................................................................................. 25
DC Electrical Characteristics................................................................................ 25
AC Electrical Characteristics................................................................................ 26
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10 PS/2 Timing Diagram............................................................................................. 27
11 Application Circuit................................................................................................. 28
12 Application Matrix ................................................................................................. 29
13 Pad Diagram .......................................................................................................... 30
ELAN [ ELAN MICROELECTRONICS CORP ]
