User guide

The x6 clock lines also drive the xN clock lines which route the clocks to the neighboring transceiver
banks.
Figure 3-8: x6 Clock Lines
CGB
Ch 4
CDR
CGB
Ch 3
CDR
CGB
Ch 2
CGB
Ch 1
CDR
CGB
Ch 0
CDR
CGB
Ch 5
Master
CGB
Master
CGB
x6
Top
x6
Bottom
x6
Network
CMU or CDR
CMU or CDR
xN Clock Lines
The xN clock lines route the transceiver clocks across multiple transceiver banks.
The master CGB drives the x6 clock lines and the x6 clock lines drive the xN clock lines. There are two xN
clock lines: xN Up and xN Down. xN Up clock lines route the clocks to transceiver banks located above
the master CGB and xN Down clock lines route the clocks to transceiver banks located below the master
CGB. The xN clock lines can be used in both bonded and non-bonded configurations. For bonded
UG-01143
2015.05.11
xN Clock Lines
3-33
PLLs and Clock Networks
Altera Corporation
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