4.3.11 LAN 2 Activity INDICATOR LED
The green LAN 2 Activity indicator lights whenever a link is detected. The LED blinks if network activity is
detected.
4.3.12 LAN 2 Speed INDICATOR LED
The LAN 2 Speed indicator lights green whenever a 100 MBit/s link is detected and lights yellow when a GBit/s
link is detected. For 10 MBit/s it remains dark.
4.4 BATTERY CIRCUIT
An on board battery provides power for the data retention of RTC and CMOS RAM. The battery can be changed
in the field (battery type is: Renata CR2032 3V Lithium Coin Cell).
●
Remove the 6 screws to open the right side panel.
Figure 49:
Removing the 6 screws
●
Pull the battery out of its socket and replace it with the new one.
4.5 HARDWARE WATCHDOG
The PIP uses the hardware watchdog implemented in the Intel ICH7-MDH. For further information please refer
to the ICH7 I/O Controller Hub Data sheet.
4.6 RS485 / RS422 INTERFACES
If the optional RS485 / RS422 modules (called SERIF-2) are used as half-duplex interfaces (using a 2-wire
connection) it is necessary to control the transmit driver enable. This is done by the UART automatically with the
RTS signal. But first this must be enabled with the correct BIOS setting about the serial interface type (please
refer to the appropriate BIOS User Manual).
4.7 TEMPERATURE SENSORS
There are several different temperature sensors on the PCB. Three of them are located on the SMBus.
SMBus Address Sensor Type
Temperature
Readable with
$30
MAX6681 remote
CPU die (via CPU thermal diode)
Mother Board Monitor 5.3.7.0 with Update 2
$30
MAX6681 local
PCB
Mother Board Monitor 5.3.7.0 with Update 2
$90
LM75
Memory
Mother Board Monitor 5.3.7.0 with Update 2
Two more are directly integrated in the CPU die (one per CPU core). This Digital Thermal Sensors (DTS) are
readable with the CoreTemp tool.
For links to this tools please have a look at chapter 5.4.
2010 by MPL AG
45
MEH-10126-201 Rev. D
High-Tech • Made in Switzerland
PIP20 / PIP22
Technical Reference Manual
