Freescale Semiconductor i.MX27 PDK 1.0 - Manual (Page 52)

i.MX27 PDK 1.0 Hardware User's Guide, Rev. 1.0 Freescale Semiconductor 5-20
5.4 Keypad
The keypad is implemented on the Personality board. The keypad provides nine buttons, and is
used for applications that require control and navigation capabilities.
As shown in Figure 5-2, the buttons provide the following navigation functions:
Red arrows: LEFT, RIGHT, UP, DOWN
ENTER: at the center of the red arrows
Menu 1 through Menu 4
The Personality board also provides the following:
• An expansion connector to support an 8 x 8 matrix Keypad, for a diverse set of low-cost
applications requiring a keyboard or keypad-like interface.
• (Currently not implemented). A 24-pin connector (CN20) is ready for use as a Keypad
expansion.
Figure 5-2 Keypad