Specifications

4Introduction
operate at different speeds. Together with 64-bit to 32-bit access
conversion, system architects can utilize the bridge and connect
slower or higher speed controllers on primary or secondary bus,
hence supporting independent speed and data bus frequency on
either side of the PCI bus. The 64-bit/66 MHz PCI bus is backward
compatible with 64-bit/33 MHz PCI, 32-bit/66 MHz PCI and 32-
bit/33 MHz PCI busses. The SBC design is compliant with the
PICMG 2.1 hot-swap specification so it can be hot-swappable in
the peripheral slots. The cPCI-6840 can also be a hot-swappable
server blade for stand alone operation on any non-PCI backplane
without a system slot.
PCI Mezzanine Card (PMC) Interface
The cPCI-6840 supports up to two PMC slots at 64-bit/66 MHz
PCI, providing expansion capability and flexibility for varieties of
applications. The Jn4 rear I/O of the upper PMC site (PMC2) are
implemented by connecting to the CompactPCI J5 connector,
which complies with the PICMG 2.3 specification.
When the ADLINK SCSI PMC module (PMC-8631) is installed in
PMC2 along with the cPCI-R6840 RTM, it can provide SCSI-320
interfaces on the rear panel of the Rear I/O Transition Module
(RTM) for external storage devices. Some telecom PMC modules
may also utilize the J24 rear I/O connection and the PMC Interface
Module (PIM) site on the RTM to provide telecom I/O connection
on the rear panel. The cPCI-R6841P RTM provides a PIM site.
IDE Interfaces
The cPCI-6840 supports dual Ultra ATA100 IDE channels. Primary
IDE is implemented on the cPCI-6840 and Secondary IDE is
routed to the RTM via J5 connector. Two 44-pin connectors for 2.5
inches IDE drives are reserved on both Primary and Secondary
IDE interfaces.
The space of lower PMC site (PMC1) shall be used for installing
the 2.5 inches IDE HDD, flash disk, or a CompactFlash carrier
baord, DB-6840CF. When an application installs a storage device
on the SBC, the PMC1 is occupied. Also note that the PMC1 con-
nectors are not available on the cPCI-6840V because its front
panel is occupied by VGA and PS2 keyboard/mouse connectors.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com