2 Line Unit (LU1)
PLD
Various system control functions are embedded in HEP PLD.
I2C
I2C bus and switches are used for accessing devices such as EEPROMs, A/D converters and
temperature sensors.
RTC
The real time clock has backup for short power breaks. The time is kept for at least 20 hours (at
20º C/68º F).
A/D Converter
There is an analog-to-digital converter on the baseboard. It is used for measuring and monitoring
operating voltages and temperatures.
Asynchronous RS-232 Serial Interface
The asynchronous serial interface is used for local management connections.
External Alarm Interface
There is one dedicated general alarm output. There are also four alarm inputs.
2.3.2
NPU Subsystem
The NPU subsystem performs layer 2 and layer 3 packet switching, packet forwarding, packet
fi
ltering and traf
fi
c management functions. For data buffering and other functions, the NPU uses
DDR3 as well as TCAM memories.
2.3.3
FPGA Subsystem
The FPGA subsystem implements the timing logic for the timing block and many miscellaneous
control functions.
2.3.4
Timing Block
The timing block is a Network Element Clock generator with a station clock interface. The
station clock interface supports a [G.703] 2048 kHz synchronization interface or an interface with
Synchronization Status Messages.
The 8600 Smart Routers Network Element Clock complies with SEC [G.813] and Stratum 3
generator [GR-1244-CORE]. The functional modelling is speci
fi
ed in [ETS 300 417-6-1] and
[G.781].
76.8670-40128B
8600 Smart Routers
© 2015 Coriant.
8665 Smart Router FP7.0 Reference Manual
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