Keyboard Transmitter Firmware
Designer Reference Manual
DRM050 — Rev 0
32
Keyboard Transmitter Firmware
MOTOROLA
Figure 6-1. Firmware Flow
6.2 Output Buffer Format for Keyboard RF Packet
Figure 6-2
shows the output buffer format for the keyboard RF packet.
It is similar to that of the mouse, except for the last two bytes.
Break/Make byte indicates whether the packet represents a Make key
CONVERT SCAN KEY
NO KEY ACTIVITY
FOR 10 SECOND?
INITIALIZATION
INITIALIZATION
YES
SCAN KEY MATRIX
CONVERT SCAN KEY
NO
YES
ENTER
POWER SAVING MODE
ANY KEY PRESSED
NO
DETECTED?
WAKE UP DEVICE
VALID KEY PRESSED
DETECTED?
INIT MAC TO TRANSMIT
YES
NO
THE RF PACKET
IRQ ISR
DETERMINE AND SERVE
THE INTERRUPT EVENT FROM
RFW-D100 BASEBAND CHIP
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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