EKF PC1-2-GROOVE, Руководство пользователя

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User Guide • PC1-GROOVE • Core
TM
i7 CompactPCI
®
CPU Board
Local SMB Devices
The PC1-GROOVE contains a few devices that are reachable via the System Management Bus (SMBus).
These are the clock generation chip, the SPD EEPROMs for the onboard memory channel or located
on the SODIMM memory module, a general purpose serial EEPROM and a supply voltage and
temperature controlling device in particular. Other devices could be connected to the SMBus via the
CompactPCI signals IPMB SCL (J1 B17) and IPMB SDA (J1 C17) or pins 29/30 of the expansion
connectors J-EXPT/J-EXPB.
Address Description
0x58 Hardware Monitor/CPU Temperature Sensor (LM87)
0xA0 SPD of Onboard Memory
0xA4 SPD of SODIMM
0xAE General Purpose EEPROM
0xD2 Main Clock Generation (CK-505)
Hardware Monitor LM87
Located on the SMBus the PC1-GROOVE offers a hardware monitor of type LM87/NSC. This device is
capable to observe board and onboard memory temperatures as well as several supply voltages
generated on the board with a resolution of 8 bit. The following table shows the mapping of the
voltage inputs of the LM87 to the corresponding supply voltages of the PC1-GROOVE:
Input Source Resolution
[mV]
Register
AIN1 CPU Core Voltage 9.8 0x28
AIN2 Graphics Core Voltage 9.8 0x29
VCCP1 +1.5V 14.1 0x21
VCCP2/D2- +1.8V 14.1 0x25
+2.5V/D2+ +1.05V 13 0x20
+3.3V +3.3V 17.2 0x22
+5V +5V 26 0x23
+12V +10V 62.5 0x24
Beside the continuous measuring of temperatures and voltages the LM87 may compare these values
against programmable upper and lower boundaries. As soon as a measurement violates the allowed
value, the LM87 may request an interrupt via the GPI13 of the PCH.
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