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OCPRF100 MP Server System Technical Product Specification
Revision 1.0
119
10.2.3.3 UART
A universal asynchronous receiver/transmitter (UART) is memory mapped to the microcontrol-
ler’s bus to allow concurrent operation of the ICMB and EMP ports. The UART is used for the
EMP interface.
10.2.3.4 Serial EEPROM/Temperature Sensor
The serial EEPROM is accessible on the FPC’s private I
2
C bus. A DS1621* temperature sensor
is also on the private I
2
C bus, which is used to sense the ambient temperature outside of the sys-
tem.
The 24C02*, when accessed via the I
2
C bus, provides the following FRU information. The FRU
information is read by the Intel
®
LANDesk
®
Server Manager or similar management software
and is available via the LANDesk Server Manager console.
The 24C02 SEEPROM has 256 bytes of programmable space, which is broken into four areas.
Table 10-4: SEEPROM Programming Areas is a list of the areas, a brief description of their pur-
pose, and the space allocated to each area.
† A utility provided by Intel, called the FRU & SDR Load Utility, allows the integrator to program any of the FRU
SEEPROM in the chassis.
Table 10-3: FRU Device Address
Device Function
I
2
C Address
24C02* Front panel FRU information A0h, A1h
DS1621* Temperature sensor to detect ambient temperature 90h, 91h
Table 10-4: SEEPROM Programming Areas
Area Size Description
Common header 8 Bytes Programming offsets to the other areas below.
Internal use 80 Bytes
This area is reserved for general purpose use by Intel
®
server
management firmware/controllers.
Chassis information 32 Bytes Contains chassis information.
Board information 56 Bytes Contains the board FRU information listed in .
Product information 80 Bytes Available for integrator use.†