Addr Name Description Access HW Reset
Value
•
Bit [9]: RESTART_AUTO_NEGOTIATION. Set this bit
to 1 to restart auto-negotiation.
The PHY clears the bit as soon as auto-negotiation is
restarted.
RWC 0
• The rest of the bits are reserved. — —
0x01
status
•
Bit [5]: AUTO_NEGOTIATION_COMPLETE. A value of
"1" indicates that the auto-negotiation is completed.
RO 0
•
Bit [3]: AUTO_NEGOTIATION_ABILITY. A value of
"1" indicates that the PCS function supports auto-
negotiation.
RO 1
•
Bit [2]: LINK_STATUS. A value of "0" indicates that
the link is lost. Value of 1 indicates that the link is
established.
RO 0
• The rest of the bits are reserved. — —
0x02:0x03
phy_identifier
The value set in the PHY_IDENTIFIER parameter. RO Value of
PHY_IDEN
TIFIER
parameter
0x04
dev_ability
Use this register to advertise the device abilities during
auto-negotiation.
— —
•
Bits [13:12]: RF. Specify the remote fault.
— 00: No error.
— 01: Link failure.
— 10: Offline.
— 11: Auto-negotiation error.
RW 00
•
Bits [8:7]: PS. Specify the PAUSE support.
— 00: No PAUSE.
— 01: Symmetric PAUSE.
— 10: Asymmetric PAUSE towards the link partner.
— 11: Asymmetric and symmetric PAUSE towards
the link device.
RW 11
•
Bit [5]: FD. Ensure that this bit is always set to 1.
RW 1
• The rest of the bits are reserved. — —
0x05
partner_ability
The device abilities of the link partner during auto-
negotiation.
— —
•
Bit [14]: ACK. A value of "1" indicates that the link
partner has received three consecutive matching
ability values from the device.
RO 0
•
Bits [13:12]: RF. The remote fault.
— 00: No error.
— 01: Link failure.
— 10: Offline.
— 11: Auto-negotiation error.
RO 0
continued...
2. Implementing Protocols in Arria 10 Transceivers
UG-01143 | 2018.06.15
Intel
®
Arria
®
10 Transceiver PHY User Guide
204
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