
Table 15-6: RX PMA Parameters
Parameter Range Description
Enable CDR dynamic reconfigura‐
tion
On/Off When you turn this option On, you can
dynamically change the data rate of the CDR
circuit.
Number of CDR reference clocks 1–5 Specifies the number of reference clocks for the
CDRs.
Selected CDR reference clock 0–4 Specifies the index of the selected CDR reference
clock.
Selected CDR reference clock
frequency
Device
Dependent
Specifies the frequency of the clock input to the
CDR.
PPM detector threshold
+/- 1000 PPM
Specifies the maximum PPM difference the CDR
can tolerate between the input reference clock
and the recovered clock.
Enable rx_pma_clkout port On/Off When you turn this option On, the RX parallel
clock which is recovered from the serial received
data is an output of the PMA.
Enable rx_is_lockedtodata port On/Off When you turn this option On, the rx_is_
lockedtodata port is an output of the PMA.
Enable rx_is_lockedtoref port On/Off When you turn this option On, the rx_is_
lockedtoref port is an output of the PMA.
Enable rx_set_lockedtodata and
rx_set_locktoref ports
On/Off When you turn this option On, the rx_set_
lockedtdata and rx_set_lockedtoref ports are
outputs of the PMA.
Enable rx_pma_bitslip_port On/Off When you turn this option On, the rx_pma_
bitslip is an input to the core. The deserializer
slips one clock edge each time this signal is
asserted. You can use this feature to minimize
uncertainty in the serialization process as
required by protocols that require a datapath with
deterministic latency such as CPRI.
Enable rx_seriallpbken port On/Off When you turn this option On, the rx_
seriallpbken is an input to the core. When your
drive a 1 on this input port, the PMA operates in
serial loopback mode with TX data looped back
to the RX channel.
Related Information
Transceiver Architecture in Cyclone V Devices Cyclone V Devices
15-8
RX PMA Parameters
UG-01080
2015.01.19
Altera Corporation
Cyclone V Transceiver Native PHY IP Core Overview
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