User guide
P5040 DS Hardware Getting Started, Rev. 1.5
Freescale Semiconductor 33
Push Buttons
9 Push Buttons
Table 8 lists the functioning of P5040 DS (SuperHYDRA) push buttons. Figure 7 notes push button 
locations.
Figure 7. Super Hydra Push Button Locations
Table 8. P5040 DS (SuperHYDRA) Push Buttons
Push Button Function Description
SW14 Power (ON/OFF)
 • Press SW14 to assert Power-ON/OFF.
 • Powered by an external ATX power supply via J43 and J41 
power connectors.
 • System automatically powers-on after asserting ATX 
power supply if SW9.5=’1’. 
SW15 Event  • Press SW15 to issue processor IRQ4.
SW16 Hard Reset (HRST)  • Press SW16 for Hard Reset.
SW14
SW15
SW16










