User guide

PCS-PMA Interface Width Protocol Implementations
20
• CPRI
• Basic
• Basic rate match
Word Aligner Pattern Length for Various Word Aligner Modes
Table 5-11: Word Aligner Pattern Length for Various Word Aligner Modes
PCS-PMA
Interface
Width
Supported Word
Aligner Modes
Supported
Word
Aligner
Pattern
Lengths
rx_std_wa_
patternalign
behavior
rx_syncstatus
behavior
rx_patterndetect
behavior
8
Bit slip 8 rx_std_wa_
patternalign
has no effect on
word alignment.
The single width
word aligner
updates the
word boundary,
only when the
FPGA fabric-
asserted
BITSLIP signal
toggles.
N/A N/A
Manual 8, 16 Word alignment
is controlled by
rx_std_wa_
patternalign
and is edge-
sensitive to this
signal.
Asserted high
for one parallel
clock cycle when
the word aligner
aligns to a new
boundary.
Asserted high for one
parallel clock cycle
when the word
alignment pattern
appears in the current
word boundary.
10
Bit slip 7 rx_std_wa_
patternalign
has no effect on
word alignment.
The single width
word aligner
updates the
word boundary,
only when the
FPGA fabric-
asserted
N/A N/A
UG-01143
2015.05.11
Word Aligner Pattern Length for Various Word Aligner Modes
5-45
Arria 10 Transceiver PHY Architecture
Altera Corporation
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