Table of Contents
Advertisement
2
3.1.2 I
C/SMBus Temperature Sensor
There are four temperature sensors:
1. The MAX6659 senses the CPU and its own temperature remotely for
ambient/chassis/room temperature. The MAX6659 can be monitored and
controlled on the SMBus at one of three addresses through an address pin.
This allows the user to monitor and set up the three alarm outputs: (ALERT,
OVERT1 and OVERT2). For more information on the Maxim MAX6659,
contact them directly at: 1-888-629-4642, or visit Maxim's website at
www.maxim-ic.com.
2. The LM75 senses the SODIMM/RAM temperature.
For more information on the LM75 digital Temperature Sensor, go to their
website:
3. The MAX1805 senses the two Ethernet controllers; Intel 82571 dual GByte
controllers at the front panel dual Ethernet and the rear VITA 41.3 dual
Ethernet. For more information, call 1-888-629-4642, or visit Maxim's
website at
The three sensors described above can be monitored and controlled on the
SMBus. The SMBus controller used to access these temperature sensors is part of
the Intel 945GME ICH7, 82801GHM. It can be accessed as a PCI device with the
vendor ID 0x8086 (Intel) and the device ID 0x27DA (SMBus Controller).
For more detailed information regarding the ICH7 device 31, function 3, see the
ICH7 data sheet at http://www.intel.com/assets/pdf/datasheet/307013.pdf, pages
583-599.
4. Lastly, there is an internal-to-the-CPU temperature sensor (see page 89 of
the "Intel Core Duo Processor and Intel Core Solo Processor on 65 nm
Process" Datasheet at
30922106.pdf.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
http://www.national.com/mpf/LM/LM75.html.
www.maxim-ic.com.
http://download.intel.com/design/mobile/datashts/
Embedded PC/RTOS Features 43
Advertisement
Table of Contents
