
Chapter 4: Backplane Ethernet 10GBASE-KR PHY IP Core 4–24
Register Interface and Register Descriptions
November 2012 Altera CorporationAltera Transceiver PHY IP Core
User Guide
0xC5 15:0 RW
User Next page low
The Auto-Negotiation TX state machine uses these bits if
the Auto-Negotiation
next pages ctrl
bit is set. The
following bits are defined:
■ [15]: next page bit
■ [14]: ACK controlled by the state machine
■ [13]: Message Page (MP) bit
■ [12]: ACK2 bit
■ [11]: . . .
For more information refer to Clause 73.7.7.1 Next Page
encodings of IEEE 802.3ap-2007.
Bit 49, the PRBS bit, is generated by the Auto-Negotiation
TX state machine.
0xC6 31:0 RW
User Next page high
The Auto-Negotiation TX state machine uses these bits if
the Auto-Negotiation
next pages ctrl
bit is set. Bits
[31:0] correspond to page bits [47:16].
Bit 49, the PRBS bit, is generated by the Auto-Negotiation
TX state machine.
0xC7 15:0 RO
LP base page low
The AN RX state machine received these bits from the link
partner. The following bits are defined:
■ [15] Next page bit
■ [14] ACK which is controlled by the state machine
■ [13] RF bit
■ [12:10] Pause bits
■ [9:5] Echoed Nonce which are set by the state machine
■ [4:0] Selector.
0xC8 31:0 RO
LP base page high
The AN RX state machine received these bits from the link
partner. The following bits are defined:
■ [31:30]: Reserved
■ [29:5]: Correspond to page bits [45:21] which are the
technology ability,
■ [4:0]: Correspond to bits [20:16] which are TX Nonce
bits.
0xC9 15:0 RO
LP Next page low
The AN RX state machine receives these bits from the link
partner. The following bits are defined:
■ [15]: Next page bit
■ [14]: ACK which is controlled by the state machine
■ [13]: MP bit
■ [12] ACK2 bit,
■ [11] . . .
For more information refer to Clause 73.7.7.1 Next Page
encodings of IEEE 802.3ap-2007.
Table 4–18. 10GBASE-KR Register Definitions (Part 5 of 12)
Word
Address
Bit R/W Name Description
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