
Chapter 4: Backplane Ethernet 10GBASE-KR PHY IP Core 4–23
Register Interface and Register Descriptions
November 2012 Altera CorporationAltera Transceiver PHY IP Core
User Guide
0xC2
(cont)
9RO
Seq AN Failure
When set to 1, a sequencer Auto-Negotiation failure has
been detected. When set to 0, a Auto-Negotiation failure
has not been detected.
17:12 RO
KR AN Link Ready[5:0]
Provides a one-hot encoding of
an_receive_idle =
true
and link status for the supported link as described in
Clause 73.10.1. The following encodings are defined:
■ 6’b000000: Reserved
■ 6’b000001 Reserved
■ 6’b000010: 10GBASE-KR
■ 6’b001000: Reserved
■ 6’b010000: Reserved
■ 6’b100000: Reserved
10GBASE-KR is bit 7.48.3 of Clause 45 of IEEE
802.3ap-2007.
0xC3 15:0 RW
User base page low
The Auto-Negotiation TX state machine uses these bits if
the
AN base pages ctrl
bit is set. The following bits are
defined:
■ [15]: Next page bit
■ [14]: ACK which is controlled by the SM
■ [13]: Remote Fault bit
■ [12:10]: Pause bits
■ [9:5]: Echoed nonce which are set by the state machine
■ [4:0]: Selector
Bit 49, the PRBS bit, is generated by the Auto-Negotiation
TX state machine.
0xC4 31:0 RW
User base page high
The Auto-Negotiation TX state machine uses these bits if
the Auto-Negotiation
base pages ctrl
bit is set. The
following bits are defined:
■ [29:5]: Correspond to page bit 45:21 which are the
technology ability.
■ [4:0]: Correspond to bits 20:16 which are TX nonce
bits.
Bit 49, the PRBS bit, is generated by the Auto-Negotiation
TX state machine.
Table 4–18. 10GBASE-KR Register Definitions (Part 4 of 12)
Word
Address
Bit R/W Name Description
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