IPN-8U NETWORK SWITCHING MODULE
USER MANUAL
armtel.com
page 11/32
© Armtel
ENG
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«Х1»
– functional jumper to clean central processor memory, it is used only
for initial programming at the Manufacturer.
ATTENTION! CLEANING OF EMBEDDED CENTRAL PROCESSOR MEMORY RE-
SULTS IN FULL PRODUCT INABILITY!
Simplified block-diagram of IPN-8U is illustrated at Figure 4.
Figure 4 – Block-diagram of IPN-8U
IPN-8U operation is controlled by central processor (CPU) ARM9, with basic software
in its embedded memory. Embedded software, configuration data files and HTML-pages of
WEB-interface are stored in non-volatile flash memory.
Two sets of Infineon chips are connected to the processor via IOM-2 lines, four Uk0-
interfaces each. Ethernet interface of the processor is connected to embedded Ethernet
switch chip, four of which are connected to the front panel of IPN-8U. Each of these net-
work interfaces is equipped with PoE injector (PSE), which provides power to the network
devices connected to it.
The integrated power distribution scheme includes separate fuses for phantom power
circuits of U-interface units and PoE injectors, providing a second line of overload protec-
tion in subscriber lines.
