User guide

Figure 2-138: GT Channel Configuration
CMU or CDR
CGB
Ch 4
CDR
CGB
Ch 3
CDR
CGB
Ch 2
CGB
Ch 1
CDR
CGB
Ch 0
CDR
CGB
Ch 5
ATX PLL1
ATX PLL0
CMU or CDR
When both the channels 0 and 1 are configured as GT channels, they are driven by the same ATX PLL
and have to be configured to run at the same data rates. This is also true for channels 3 and 4 when they
are configured as GT channels.
Skew is expected between GT channels and the exact values are pending device characterization.
Currently, GT channel bonding is not supported.
UG-01143
2015.05.11
PLL and GT Transceiver Channel Clock Lines
2-315
Implementing Protocols in Arria 10 Transceivers
Altera Corporation
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