Technical data

Controls, LEDs, and Connectors
MVME2502 Installation and Use (6806800R96B)
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3.2.1 Reset Switch
The MVME2502 has a single push button switch that has both the abort and reset functions.
Pressing the switch for less than three seconds can generate 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 utilizes 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 also a few user configurable
LEDs. Each LED description is necessary for troubleshooting and debugging.
3.3.1 Front Panel LEDs
The front panel LEDs are listed below
Figure 3-4 Front Panel LEDs
Table 3-1 Front Panel LEDs
Label Function Location Color Description
USER 1 User Defined Front panel Off
Yellow
Red
By default
User Software Controllable. Refer to
the "User LED Register."
User Software Controllable. Refer to
the "User LED Register."
PMC/XMC 2
PMC/XMC 1 USER 1 FAIL
SPEED
ACT
ACT
ETH 1
ETH 2
SPEED