User guide

Table 2-4: TX Bonding Options
Parameter Value Description
TX channel
bonding mode
Not bonded
PMA only bonding
PMA and PCS
bonding
Selects the bonding mode to be used for the channels specified.
Bonded channels use a single TX PLL to generate a clock that
drives multiple channels, reducing channel-to-channel skew.
The following options are available:
Not bonded: In a non-bonded configuration, only the high
speed serial clock is expected to be connected from the TX PLL
to the Native PHY. The low speed parallel clock is generated by
the local clock generation block (CGB) present in the
transceiver channel. For non-bonded configurations, because
the channels are not related to each other and the feedback path
is local to the PLL, the skew between channels cannot be
calculated.
PMA only bonding: In PMA bonding, the high speed serial
clock is routed from the transmitter PLL to the master CGBl.
The master CGB generates the high speed and low parallel
clocks and the local CGB for each channel is bypassed. Refer to
the Channel Bonding section for more details.
PMA and PCS bonding : In a PMA and PCS bonded configu‐
ration, the local CGB in each channel is bypassed and the
parallel clocks generated by the master CGB are used to clock
the network. The master CGB generates both the high and low
speed clocks. The master channel generates the PCS control
signals and distributes to other channels through a control
plane block.
The default value is Not bonded.
Refer to Channel Bonding section in PLLs and Clock Networks
chapter for more details.
PCS TX channel
bonding master
Auto, 0 to <number
of channels> -1
Specifies the master PCS channel for PCS bonded configura‐
tions. Each Transceiver Native PHY IP instance configured
with bonding must specify a bonding master. If you select Auto,
the Transceiver Native PHY IP core automatically selects a
recommended channel.
The default value is Auto. Refer to the PLLs and Clock Networks
chapter for more information about the TX channel bonding
master.
Actual PCS TX
channel bonding
master
0 to <number of
channels> -1
This parameter is automatically populated based on your
selection for the PCS TX channel bonding master parameter.
Indicates the selected master PCS channel for PCS bonded
configurations.
2-24
PMA Parameters
UG-01143
2015.05.11
Altera Corporation
Implementing Protocols in Arria 10 Transceivers
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