ADLINK cPCI-6870 - Manual (Page 34)

20 Functional Description
3.3 Super I/O
The ITE IT8783F Super I/O is on a Low Pin Count interface sup-
porting PS/2 keyboard/mouse, three 16C550-compatible serial
ports, floppy drive interface, hardware monitor function to monitor
CPU voltage, CPU temperature, power supply voltages and system
temperature, and Watch Dog Timer with time resolution from mini-
mum 1 second or minute to maximum 65,535 seconds or minutes.
3.4 Battery
The cPCI-6870 is provided with a 3.0V coin cell lithium battery for
the Real Time Clock (RTC). The lithium battery must be replaced
with an identical battery or a battery type recommended by the
manufacturer. A Rayovac BR2032 is equipped on board by
default.
3.5 PMC/XMC Sites
The cPCI-6870 series supports two PMC sites for front panel I/O
expansion. The PMC sites provides a maximum 64bit/133MHz
PCI bus link using a Pericom PI7C9X130 PCI-Express-to-PCI
bridge and PCI-Express x4 link. The PMC site supports +3.3V or
+5V signaling.
The JN1/4 and JN2/5 connectors provide the signals for the 32-bit
PCI bus. The JN3/6 connector provides the 64 bit extension for the
PMC interface. The JN7 connector in PMC/XMC 2 supports user
defined I/O signals and is routed to the CompactPCI J4 connector
to rear I/O.
The cPCI-6870 provides two PCIe x8 XMC interfaces sharing
the same space as the PMC sites for high speed I/O expansion
such as 10GbE or high-end graphics.