Intel® Server Chassis SC1400UP / Intel® Server Platform SR1425BK1-E
Revision 1.0
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Figure 26. SATA Backplane Functional Block Diagram
3.4.2.1
Enclosure Management Controller
The SC1400UP SATA backplane utilizes the features and functionality of the QLogic
®
GEM424
enclosure management controller, which is capable of monitoring various aspects of a storage
enclosure. The chip provides in-band SAF-TE management through the SATA Host I
2
C
interface.
The GEM424 comes in a 80-pin Thin Quad Flat Pack (TQFP) package and operates from 3.3V
and input clock frequency of 20MHz. It has general input and output pins that are used for
hardware drive detection and driving FAULT and ACTIVITY LEDs.
3.4.2.1.1 SATA
Interface
The GEM424 implements SAF-TE over the HBA I
2
C interface. The GEM424 supports the
following SAF-TE Command Set:
Read Enclosure Configuration
Read Enclosure Status
Read Device Slot Status
Read Global Flags
Write Device Slot Status
Perform Slot Operation
