Multi-purpose I/O
EPM-31 Hardware Reference Manual
37
PCI
E
M
INI
C
ARD
LED
S
Two dual-colored PCIe Mini Card LEDs are provided on the EPM-31 at locations D9 and D8.
Table 7 lists the states of the LEDs. Figure 17 shows the location of the PCIe Mini Card LEDs.
Table 7: PCIe Mini Card LED States
LED
Color
Status (when lit)
D9
Green
Activity on Wireless PAN (
Note
)
Yellow
Illuminates when the 3.3 V power to the Mini Card is on. It alerts users to not hot-
plug the Mini Card. By default, Mini Card power stays on when the processor is in
sleep modes.
D8
Green
Activity on Wireless WAN (
Note
)
Yellow
Activity on Wireless LAN (
Note
)
Note:
These LEDs will illuminate when the associated device is installed and capable of transmitting. Their function is
determined by the installed device.
Integrator’s Note:
The 3.3 V power to the Mini Card can be controlled by the FPGA. By default, the power is always
on, but there is a register setting that turns this power off in sleep modes. The Mini Card 1.5 V
power is always turned off in sleep modes.
Figure 17. Location of PCIe Mini Card LEDs