User guide
Word
Addr
Bit R/W Name Description
0x4
C0
0
RW AN enable When set to 1, enables the AN function. The default
value is 1. For additional information, refer to bit 7.0.12
in Clause 73.8 Management Register Requirements of
IEEE 802.3ap-2007.
1 RW AN base pages ctrl When set to 1, the user base pages are enabled. You can
send any arbitrary data via the user base page low/high
bits. When set to 0, the user base pages are disabled and
the state machine generates the base pages to send.
2 RW AN next pages ctrl When set to 1, the user next pages are enabled. You can
send any arbitrary data via the user next page low/high
bits. When set to 0, the user next pages are disabled. The
state machine generates the null message to send as next
pages.
3 RW Local device remote
fault
When set to 1, the local device signals Remote Faults in
the AN pages. When set to 0, a fault has not occurred.
4 RW Force TX nonce
value
When set to 1, forces the TX nonce value to support
some UNH testing modes. When set to 0, this is normal
operation.
5 RW Override AN
Parameters Enable
When set to 1, overrides the AN_TECH, AN_FEC, and AN_
PAUSE parameters and uses the bits in 0xC3 instead. You
must reset the Sequencer to reconfigure and restart into
AN mode. When set to 0, this is normal operation and is
used with 0xB0 bit 0 and 0xC3 bits[30:16].
0x4
C1
0 RW Reset AN When set to 1, resets all the 10GBASE-KR AN state
machines. This bit is self clearing.
4 RW Restart AN TX SM When set to 1, restarts the 10GBASE-KR TX state
machine. This bit self clears and is active only when the
TX state machine is in the AN state. For more informa‐
tion, refer to bit 7.0.9 in Clause 73.8 Management
Register Requirements of IEEE 802.3ap-2007.
8 RW AN Next Page When asserted, new next page (NP) info is ready to send.
The data is in the XNP TX registers. When 0, the TX
interface sends null pages. This bit self clears. NP is
encoded in bit D15 of Link Codeword. For more
information, refer to Clause 73.6.9 and bit 7.16.15 of
Clause 45.2.7.6 of IEEE 802.3ap-2007.
2-186
Register Definitions
UG-01143
2015.05.11
Altera Corporation
Implementing Protocols in Arria 10 Transceivers
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