User guide

User Guide • PC1-GROOVE • Core

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

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.