Altera Transceiver PHY IP Core Manual de usuario Pagina 396

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Table 13-18: Bit Reversal and Polarity Inversion Parameters
Parameter Range Description
Enable TX bit reversal On/Off When you turn this option On, the
word aligner reverses TX parallel data
before transmitting it to the PMA for
serialization. You can only change this
static setting using the Transceiver
Reconfiguration Controller.
Enable RX bit reversal On/Off When you turn this option On, the rx_
std_bitrev_ena port controls bit
reversal of the RX parallel data after it
passes from the PMA to the PCS.
Enable RX byte reversal On/Off When you turn this option On, the
word aligner reverses the byte order
before transmitting data. This function
allows you to reverse the order of bytes
that were erroneously swapped. The
PCS can swap the ordering of both 8
and10 bit words.
Enable TX polarity inversion On/Off When you turn this option On, the tx_
std_polinv port controls polarity
inversion of TX parallel data before
transmitting the parallel data to the
PMA.
Enable RX polarity inversion On/Off When you turn this option On,
asserting rx_std_polinv controls
polarity inversion of RX parallel data
after PMA transmission.
Enable rx_std_bitrev_ena port On/Off When you turn this option On,
asserting rx_std_bitrev_ena control
port causes the RX data order to be
reversed from the normal order, LSB to
MSB, to the opposite, MSB to LSB.
This signal is an asynchronous input.
Enable rx_std_byterev_ena port On/Off When you turn this option On,
asserting rx_std_byterev_ena input
control port swaps the order of the
individual 8 or 10bit words received
from the PMA.
UG-01080
2015.01.19
Bit Reversal and Polarity Inversion
13-21
Arria V Transceiver Native PHY IP Core
Altera Corporation
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