Altera 40-Gbps Ethernet MAC and PHY MegaCore Function - Manual (Page 187)

Word
Addr
Bit R/W Name Description
23 RO
or
RW
LP Preset
Coefficients
When set to 1, The local device TX coefficients are set to a
state where equalization is turned off. Preset coefficients are
used. When set to 0, the local device operates normally. The
function and values of the preset bit is defined in
72.6.10.2.3.1. The function and values of the initialize bit are
defined in Clause 72.6.10.2.3.2. For more information, refer
to bit 10G BASE-KR LP coefficient update register bits
(1.152.13) in Clause 45.2.1.78.3 of IEEE 802.3ap-2007.
29:24 RO
LP coefficient
status[5:0]
Status report register reflects the contents of the second, 16-
bit word of the training frame most recently received from
the control channel: The following fields are defined:
• [5:4]: Coefficient (+1)
• 2'b11: Maximum
• 2'b01: Minimum
• 2'b10: Updated
• 2'b00: Not updated
• [3:2]: Coefficient (0) (same encoding as [5:4])
• n [1:0]: Coefficient (-1) (same encoding as [5:4])
For more information, refer to bit 10G BASE-KR LP status
report register bits (1.153.5:0) in Clause 45.2.1.79 of IEEE
802.3ap
-
2007.
30 RO
LP Receiver ready
When set to 1, the link partner receiver has determined that
training is complete and is prepared to receive data. When set
to 0, the link partner receiver is requesting that training
continue.
Values for the receiver ready bit are defined in Clause
72.6.10.2.4.4. For more information, refer to bit 10G BASE-
KR LP status report register bits (1.153.15) in Clause
45.2.1.79 of IEEE 802.3ap
-
2007.
C-14 10GBASE-KR PHY Register Definitions
UG-01088
2014.12.15
Altera Corporation 10GBASE-KR Registers
Send Feedback