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Intel® Server Chassis SC1400UP / Intel® Server Platform SR1425BK1-E
3.3.2.1
Enclosure Management Controller
The SCSI backplane utilizes the features of the QLogic
which monitors various aspects of a storage enclosure. The chip provides in-band SAF-TE and
SES management through the SCSI interface. Also supported is the IPMI specification by
providing management data to the baseboard management controller via the I2C connection to
the baseboard.
The GEM359 comes in a 144-pin Low profile Quad Flat Pack package and operates from 3.3V
and input clock frequency of 10MHz. It has general input and output pins that allow
customization, some of which are used for drive detection and power controller enable/disable
functionality.
3.3.2.1.1
SCSI Interface
The GEM359 supports LVD SCSI operation through 8-bit asynchronous SCSI data transfers.
The following SCSI Command Set is supported:
Inquiry
Read Buffer
Write Buffer
Test Unit Ready
Request Sense
Send Diagnostic
Receive Diagnostic
The GEM359 supports the following SAF-TE Command Set:
Read Enclosure Configuration
Read Enclosure Status
Red Device Slot Status
Read Global Flags
Write Device Slot Status
Perform Slot Operation
3.3.2.1.2
I2C Serial Bus Interface
The GEM359 supports two independent I2C interface ports with bus speeds of up to 400Kbits.
The I2C core incorporates 8-bit FIFOs for data transfer buffering. The I
®
National
LM75 or equivalent I
value readings to be returned to the host. The Intelligent Platform Management Bus (IPMB) is
2
supported through I
C port 1.
The figure below provides a block diagram of I
SC1400UP 1U SCSI HSBP
Revision 1.0
2
C -based temperature sensor. This enables actual temperature
2
C bus connection implemented on the
®
GEM359 for enclosure management
2
C bus supports the
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