Local Smb Devices; Hardware Monitor Lm87 - EKF SC2-PRESTO CompactPCI User Manual

User Guide • SC2-PRESTO • CompactPCI
Bus # Device #
3)
4 01,02,04 ...
3)
5 00
3)
6 00
1)
Depends on BIOS settings.
2)
Depending on BIOS settings different RAID modes may lead to other Device IDs.
3)
Bus number can vary depending on the PCI enumeration schema implemented in BIOS.

Local SMB Devices

The SC2-PRESTO 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
2
signals I C_SCL (P1 B2) and I
P-EXP.
Address
0x58
0x5C
0xA0
0xA4
0xAE

Hardware Monitor LM87

Attached to the SMBus, the SC2-PRESTO is provided with a hardware monitor (LM87). This device is
capable to observe the board and on-board memory temperatures, as well as several supply voltage
rails 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 SC2-PRESTO:
Input
AIN1
AIN2
VCCP1
VCCP2/D2-
+2.5V/D2+
+3.3V
+5V
+12V
© EKF
®
Function # Vendor ID
0 0x10B5
0 0x8086
0 0x8086
2
C_SDA (P1 B3), or pins 29/30 of the mezzanine expansion connector
Hardware Monitor/CPU Temperature Sensor (LM87)
Source
Processor Core Voltage
Graphics Core Voltage
+1.5V
+1.8V
+1.05V
+3.3V
+5V
+12V
Serial CPU Board • Intel® Core
Device ID
0x8618 PCIe Switch Downstream Ports (PEX8618)
0x157B Ethernet Controller NC3 (i210IT)
0x157B Ethernet Controller NC4 (i210IT)
Description
Board Control/Status
SPD of On-board Memory
SPD of SODIMM
General Purpose EEPROM
Resolution
[mV]
9.8
9.8
14.1
14.1
13
17.2
26
62.5
-51-
TM
4xxx Processor
Description
®
Serial backplane
Register
0x28
0x29
0x21
0x25
0x20
0x22
0x23
0x24
ekf.com