Altera 40-Gbps Ethernet MAC and PHY MegaCore Function - Manual (Page 178)

Word
Addr
Bit R/W Name Description
3 RO
AN ADV Remote
Fault
When set to 1, fault information has been sent to the link
partner. When 0, a fault has not occurred. The current value
clears when the register is read. Remote Fault (RF) is encoded
in bit D13 of the base Link Codeword. For more information,
refer to Clause 73.6.7 of and bit 7.16.13 of IEEE 802.3ap
-
2007.
4 RO
AN RX SM Idle
When set to 1, the Auto-Negotiation state machine is in the
idle state. Incoming data is not Clause 73 compatible. When
0, the Auto-Negotiation is in progress.
5 RO
AN Ability
When set to 1, the transceiver PHY is able to perform Auto-
Negotiation. When set to 0, the transceiver PHY i s not able
to perform Auto-Negotiation. If your variant includes
Auto-Negotiation, this bit is tied to 1. For more information,
refer to bits 7.1.3 and 7.48.0 of Clause 45 of IEEE
802.3ap
-
2007.
6 RO
AN Status
When set to 1, link is up. When 0, the link is down. The
current value clears when the register is read. For more
information, refer to bit 7.1.2 of Clause 45 of IEEE
802.3ap
-
2007.
7 RO
LP AN Ability
When set to 1, the link partner is able to perform
Auto-Negotiation. When 0, the link partner is not able to
perform Auto-Negotiation. For more information, refer to bit
7.1.0 of Clause 45 of IEEE 802.3ap
-
2007.
8 RO
Enable FEC When asserted, indicates that auto-negotiation is complete
and that communicate includes FEC. For more information
refer to Clause 7.48.4.
9 RO
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: 1000BASE-KX
• 6'b000001: Reserved
• 6'b000100: 10GBASE-KR
• 6'b001000: Reserved
• 6'b010000: Reserved
• 6'b100000: Reserved
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:
UG-01088
2014.12.15
10GBASE-KR PHY Register Definitions C-5
10GBASE-KR Registers Altera Corporation
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