Intel
®
Entry Server Chassis SC5299-E TPS Peripheral and Hard Drive Support
Revision 3.1
Intel order number D37594-005
113
Device Power Well ViH ViL VoL Ileak CAP I
2
C Address I
2
C Bus Name
AT24C512 P5V 0.7VCC 0.3VCC 0.4V/2.1mA 3uA 8PF A2h SDA2,SCL2
AT24C128 P5V 0.7VCC 0.3VCC 0.4V/2.1mA 3uA 8PF A0h SDA2,SCL2
AT24C02 P5V 0.7VCC 0.3VCC 0.4V/2.1mA 3uA 8PF A6h SDA2,SCL2
JP2 P5V 0.7VCC* 0.3VCC* 0.4V/3mA* 10uA* 4/8P* * SDA2,SCL2
4.3.2.3.2 Temperature Sensor
The 6HDD SATA HSBP provides a National* LM75 or equivalent temperature sensor. The host
can query the LM75 at any time to read the temperature.
The temperature sensor has an I
2
C address of 0x90h on Port 0 of the GEM424 controller.
4.3.2.3.3 Serial EEPROM
The 6HDD SATA HSBP provides an Atmel* 24C02 or equivalent serial EEPROM for storing the
FRU information. The 24C02 EEPROM provides 2048 bits of serial electrically erasable and
programmable read-only memory.
The serial EEPROM has an I
2
C address of 0xA6h and resides on Port 1 of the GEM424
controller.
4.3.2.4 General Purpose Input/Output (GPIO)
The GEM424 controller supports GPIO pins that are customizable. The following table lists the
GPIO pins with their assigned functions.
Table 131. GEM424* Controller GPIO Assignment
GEM424 PIN
NAME
I/O
Type
Power
Well
Programming Description System Function Reset
State
Initial
Value
Connection
GPIO0 O 3.3V HDD0 Active LED HD0_ACT_LED Pull up 4.7K to 5V
GPIO1 O 3.3V HDD1 Active LED HD1_ACT_LED Pull up 4.7K to 5V
GPIO2 O 3.3V HDD2 Active LED HD2_ACT_LED Pull up 4.7K to 5V
GPIO3 O 3.3V HDD3 Active LED HD3_ACT_LED Pull up 4.7K to 5V
GPIO4 O 3.3V HDD4 Active LED HD4_ACT_LED Pull up 4.7K to 5V
GPIO5 O 3.3V HDD5 Active LED HD5_ACT_LED Pull up 4.7K to 5V
GPIO6 O 3.3V SATA HDD0 Status LED HD0_FLT_LED_L Pull up 4.7K to 5V
GPIO7 O 3.3V SATA HDD1 Status LED HD1_FLT_LED_L Pull up 4.7K to 5V
GPIO8 O 3.3V SATA HDD2 Status LED HD2_FLT_LED_L Pull up 4.7K to 5V
GPIO9 O 3.3V SATA HDD3 Status LED HD3_FLT_LED_L Pull up 4.7K to 5V
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