User Guide • PC1-GROOVE • Core
TM
i7
CompactPCI
®
CPU Board
PG (Power Good) LED
The PC1-GROOVE offers a LED labelled PG located within the front panel. After system reset, this LED
defaults to signal different power states:
•
Off
Sleep state S3, S4 or S5
•
Red steady
Hardware failure
•
Red blink
Software failure
•
Yellow blink Front panel handle is unlocked
•
Green
Healthy
In the state
Off
the LEDs GP and HD decode the kind of sleep state as follows:
State
Description
LED
GP
LED HD
S3
Suspend to RAM/Standby
OFF
ON
S4
Suspend to Disk/Hibernate
ON
OFF
S5
Soft Off
ON
ON
To enter the PG LED state
Software failure
an appropriate service request by software SMI must be
called. The PG LED remains in this red blinking state until the next SMI request is made. After that it
falls back to its default function.
HD (Hard Disk Activity) LED
The PC1-GROOVE offers a LED marked as HD placed within the front panel. This LED signals activity
on any device attached to the SATA ports. Since the HD activity display is realized as a bicolour LED
the access of devices connected to PCH QM57 or the SATA-Controller JMB362 can be distinguished
in the following way:
•
Off
no activity
•
Green
access to PCH SATA Ports
•
Yellow
access to JMB362 SATA Ports
As described above this LED may change its function dependent on the state of the LED PG.
GP (General Purpose) LED
Another programmable bicoloured LED can be observed from the front panel. The status of the red
part within the GP LED is controlled by the GPO18 output of the PCH. Setting this pin to "1" will
switch on the red LED. To turn on or off the green LED an appropriate service request (software SMI)
must be made.
While the CPU card is controlled by the BIOS firmware, the GP LED is used to signal board status
information. A red blinking GP LED is an indication that the BIOS code couldn't start. For details please
refer to
www.ekf.com/p/pc1/firmware/biosinfo.txt
. After successful operating system boot, the GP LED
is not dedicated to any particular hardware or firmware function with exception of special states of
the LED PG as described above. Hence it may be freely used by customer software.
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