Reset Switch; Leds; Front Panel Leds; Figure 3-4 Front Panel Leds - SMART Embedded Computing Penguin Edge MVME250 Series Installation And User Manual

Controls, LEDs, and Connectors
3.2.1

Reset Switch

The MVME2502 has a single push button switch that has both the abort and the reset
functions. Pressing the switch for less than three seconds generates an abort interrupt if
there is firmware that will read the GPIO2 (0xffdf0095) interrupt register. U-boot does not
implement any interrupts and also does not detect the interrupt or display anything when
the button is pressed.
Holding it down for more than three seconds will generate a hard reset. The VME
SYSRESET is generated if the MVME2502 is the VMEbus system controller.
3.3

LEDs

The MVME2502 utilize light emitting diodes (LEDs) to provide a visible status indicator on
the front panel. These LEDs show power failures, power up states, Ethernet link/speed,
Ethernet activity, SATA link and activity and PCIe valid lane status. There are few user
configurable LEDs. Each LED description is necessary for troubleshooting and debugging.
3.3.1

Front Panel LEDs

The front panel LEDs are shown in the next figure:

Figure 3-4 Front Panel LEDs

Table 3-1
Label
USER 1
48
PMC/XMC 2
Front Panel LEDs
Function Location
User Defined Front panel
USER 1 FAIL SPEED
PMC/XMC 1
Color Description
Off By default
Yellow User Software Controllable. Refer to
the "User LED Register."
Red User Software Controllable. Refer to
the "User LED Register."
MVME2502 Installation and Use (6806800R96L)
Controls, LEDs, and Connectors
SPEED
ACT
ACT
eTSEC 1 eTSEC 2