User Guide • SC3-LARGO • CompactPCI
®
Serial CPU Board • Intel
®
Core
TM
5xxx Processor
Local SMB Devices
The SC3-LARGO contains devices that are attached to the System Management Bus (SMBus). These
are the SPD EEPROMs for the on-board memory or the possibly plugged SODIMM, a general purpose
serial EEPROM, a supply voltage/temperature controlling device and a set of board control and status
registers. Additional devices may be connected to the SMBus via the CompactPCI
®
Serial backplane
signals I
2
C_SCL (P1 B2) and I
2
C_SDA (P1 B3), or pins 29/30 of the mezzanine expansion connector
P-EXP.
Address Description
0x58 Hardware Monitor/Memory Down Temperature
Sensor (LM87)
0x5C Board Control/Status
0xA0 SPD of On-board Memory
0xA4 SPD of SODIMM
0xAE General Purpose EEPROM
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