Pma Parameters - Intel Cyclone 10 GX User Manual

2. Implementing Protocols in Intel Cyclone 10 GX Transceivers
UG-20070 | 2018.09.24

2.4.3. PMA Parameters

You can specify values for the following types of PMA parameters:
TX PMA
• TX Bonding Options
• TX PLL Options
• TX PMA Optional Ports
RX PMA
• RX CDR Options
• Equalization
• RX PMA Optional Ports
Table 6. TX Bonding Options
Parameter
TX channel bonding
mode
PCS TX channel
bonding master
Actual PCS TX channel
bonding master
Send Feedback
Value
Not bonded Selects the bonding mode to be used for the channels specified.
Bonded channels use a single TX PLL to generate a clock that
PMA only bonding
drives multiple channels, reducing channel-to-channel skew. The
PMA and PCS bonding
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 IP core. 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 CGB. 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
configuration, 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.
Auto, 0 to <number of Specifies the master PCS channel for PCS bonded configurations.
channels> -1 Each Native PHY IP core instance configured with bonding must
specify a bonding master. If you select Auto, the 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.
0 to <number of This parameter is automatically populated based on your selection
channels> -1 for the PCS TX channel bonding master parameter. Indicates
the selected master PCS channel for PCS bonded configurations.
Description
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Intel Cyclone 10 GX Transceiver PHY User Guide
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