
Chapter 4: Backplane Ethernet 10GBASE-KR PHY IP Core 4–21
Register Interface and Register Descriptions
November 2012 Altera CorporationAltera Transceiver PHY IP Core
User Guide
0xC0
0RW
AN enable
When set to 1, enables Auto-Negotiation 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.
1RW
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.
2RW
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.
3R
Local device remote
fault
When set to 1, the local device signals Remote Faults in
the Auto-Negotiation pages. When set to 0 a fault has not
occurred.
0xC1
0RW
Reset AN
When set to 1, resets all the 10GBASE-KR
Auto-Negotiation state machines.
4RW
Restart AN TXSM
When set to 1, restarts the 10GBASE-KR TX state
machine. This bit self clears.
For more information, refer to bit 7.0.9 in Clause 73.8
Management Register Requirements of IEEE
802.3ap-2007.
8RW
AN Next Page
When asserted, new next page 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.
Next Page (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.
Table 4–18. 10GBASE-KR Register Definitions (Part 2 of 12)
Word
Address
Bit R/W Name Description
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