eKK6111
RF Keyboard Decoder
6.6.11 Set Key Type ( Hex FB,FC,FD )
Responds ACK.
Clears output buffer.
Receives key ID byte
Responds ACK.
Sets key ID type (affect only scan code set 3 operation).
FB : Typematic
FC : Make/Break
FD : Make
Returns to previous scanning rate.
6.6.12 Resend ( Hex FE )
Sends the previous output again. If the previous byte is RESEND, the last byte before
RESEND shall be sent.
6.6.13 Reset ( Hex FF )
Responds ACK.
Checks clock and data lines in the high state for at least 500 microseconds or receives
another command.
Default to scan code set 2 .
6.7 Command to the System
The following are the keyboard output commands.
6.7.1 Acknowledge ( Hex FA )
The keyboard sends an acknowledge in response to any valid command from the
system except for RESEND and ECHO.
6.7.2 BAT Completion Code ( Hex AA )
This command is issued after successful completion of keyboard self test.
6.7.3 BAT Failure Code ( Hex FC )
If a BAT failure occurs, the keyboard sends this code , discontinues scanning, and
waits for a system response or reset.
6.7.4 Echo ( Hex EE )
The keyboard sends this code in response to an ECHO command.
Product Specification (V1.0) 11.15.2002
• 7
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
