EKF SC4-CONCERTO, Руководство пользователя

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User Guide • SC4-CONCERTO • CompactPCI
®
Serial CPU Board
PG (Power Good) LED
The SC4-CONCERTO offers a bicolour 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
▸
Green Healthy
▸
Yellow blink Front panel handle open
▸
Red steady Hardware failure
▸
Red blink Software failure
To enter the PG LED state Software Failure, the bit PGLED in the board control register CTRLL_REG
must be set. The PG LED remains in this red blinking state until this bit is cleared. After that it falls
back to its default function.
GP (General Purpose) LED
This programmable bicolour LED can be observed from the SC4-CONCERTO front panel. The status of
the red part within the LED is controlled by the GPP_D11 of the PCH CM238. Setting GPP_D11 to “1"
will switch on the red LED. Turning on or off the green LED is done by setting the bit GPLED in the
board control register CTRLH_REG.
The GP LED is not dedicated to any particular hardware or firmware function with exception of special
power states of the LED PG as described above. Nevertheless, a red blinking GP LED is an indication
that the UEFI/BIOS code couldn't start.
While the CPU card is controlled by the UEFI/BIOS firmware, the GP LED is used to signal board status
information during POST (Power On Self Test). After successful operating system boot, the GP LED
may be freely used by customer software. For details please refer to
www.ekf.com/s/sc4/firmware/fwinfo.txt.
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