Intel® Server Chassis SC1400UP / Intel® Server Platform SR1425BK1-E
Revision 1.0
- 32 -
Figure 21. Intel® Server Chassis SC1400UP 1U SCSI HSBP I2C Bus Connection Diagram
3.3.2.1.3 Temperature
Sensor
SC1400UP 1U SCSI HSBP provides a National Semiconductor
®
LM75 or equivalent
temperature sensor with over-temperature detector. The host can query the LM75 at any time
to read the temperature. The host can program both the temperature alarm threshold and the
temperature at which the alarm condition goes away.
3.3.2.1.4 Serial
EEPPROM
SC1400UP 1U SCSI HSBP provides an Atmel
®
24C02 or equivalent serial EEPROM for storing
the FRU information. The 24C02 provides 2048 bits of serial electrically erasable and
programmable read-only
3.3.2.1.5
External Memory Device
SC1400UP 1U SCSI HSBP contains a non-volatile 16K Top Boot Block, 4Mbit Flash memory
device that stores the configuration data and operating firmware executed by the GEM359’s
internal CPU.
The Flash memory operates off the 3.3V rail and housed in a 48-pin TSOP Type 1 package.
3.3.2.1.6 LED
Support
SC1400UP 1U SCSI HSBP contains a green ACTIVITY LED and a yellow FAULT LED for each
of the six drive connectors. The SCSI HD itself drives the ACTIVITY LED whenever the drive
gets accessed. The GEM359 controller drives the FAULT LED whenever an error condition
gets detected.
