User guide

Parameter Value Description
Enable tx_pma_
elecidle port
On/Off Enables the tx_pma_elecidle port. When you assert this port,
the transmitter is forced into an electrical idle condition. This
port has no effect when the transceiver is configured for PCI
Express.
Enable tx_pma_
qpipullup port (QPI)
On/Off Enables the tx_pma_qpipullup control input port. Use this
port only for Quick Path Interconnect (QPI) applications.
Enable tx_pma_
qpipulldn port (QPI)
On/Off Enables the tx_pma_qpipulldn control input port. Use this
port only for QPI applications.
Enable tx_pma_
txdetectrx port (QPI)
On/Off Enables the tx_pma_txdetectrx control input port. The
receiver detect block in the TX PMA detects the presence of a
receiver at the other end of the channel. After receiving a tx_
pma_txdetectrx request the receiver detect block initiates the
detection process. Use this port only in QPI applications.
Enable tx_pma_
rxfound port (QPI)
On/Off Enables the tx_rxfound status output port. The receiver detect
block in TX PMA detects the presence of a receiver at the other
end by using the tx_pma_txdetectrx input. The tx_pma_
rxfound port reports the status of the detection operation. Use
this port only in QPI applications.
Enable rx_
seriallpbken port
On/Off Enables the optional rx_seriallpbken control input port. The
assertion of this signal enables the TX to RX serial loopback
path within the transceiver. This is an asynchronous input
signal.
Table 2-7: RX CDR Options
Parameter Value Description
Number of CDR
reference clocks
1 - 5
Specifies the number of CDR reference clocks. Up to 5 sources
are possible.
The default value is 1.
Use this feature when you want to dynamically re-configure
CDR reference clock source.
Selected CDR
reference clock
0 to <number of
CDR reference
clocks> -1
Specifies the initial CDR reference clock. This parameter
determines the available CDR references used.
The default value is 0.
Selected CDR
reference clock
frequency
< data rate
dependent >
Specifies the CDR reference clock frequency. This value
depends on the data rate specified.
2-26
PMA Parameters
UG-01143
2015.05.11
Altera Corporation
Implementing Protocols in Arria 10 Transceivers
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