User guide
Word
Addr
Bit R/W Name Description
0x4
D2
0
RO Link Trained -
Receiver status
When set to 1, the receiver is trained and is ready to
receive data. When set to 0, receiver training is in
progress. For more information, refer to the state variable
rx_trained as defined in Clause 72.6.10.3.1 and bit
10GBASE-KR PMD control register bit 10GBASE_KR
PMD status register bit (1.151.0) of IEEE 802.3ap
-
2007.
1 RO Link Training Frame
lock
When set to 1, the training frame delineation has been
detected. When set to 0, the training frame delineation
has not been detected. For more information, refer to the
state variable frame_lock as defined in Clause 72.6.10.3.1
and 10GBASE_KR PMD status register bit 10GBASE_KR
PMD status register bit (1.151.1) of IEEE 802.3ap
-
2007.
2 RO Link Training
Start-up protocol
status
When set to 1, the start-up protocol is in progress. When
set to 0, start-up protocol has completed. For more
information, refer to the state training as defined in
Clause 72.6.10.3.1 and 10GBASE_KR PMD status
register bit (1.151.2) of IEEE 802.3ap
-
2007.
3 RO Link Training
failure
When set to 1, a training failure has been detected. When
set to 0, a training failure has not been detected. For more
information, refer to the state variable training_failure as
defined in Clause 72.6.10.3.1 and bit 10GBASE_KR PMD
status register bit (1.151.3) of IEEE 802.3ap-2007.
4 RO Link Training Error When set to 1, excessive errors occurred during Link
Training. When set to 0, the BER is acceptable.
5 RO Link Training Frame
lock Error
When set to 1, indicates a frame lock was lost during
Link Training. If the tap settings specified by the fields of
0x4D5 are the same as the initial parameter value, the
frame lock error was unrecoverable.
6 RO RXEQ Frame Lock
Loss
Frame lock not detected at some point during RXEQ,
possibly triggering conditional RXEQ mode.
7 RO CTLE Fine-grained
Tuning Error
Could not determine the best CTLE due to maximum
BER limit at each step in the fine-grained tuning mode.
2-194
Register Definitions
UG-01143
2015.05.11
Altera Corporation
Implementing Protocols in Arria 10 Transceivers
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