Word
Addr
Bit R/W Name Description
0x4CA 31:0 RO
LP Next page high
The AN RX state machine receives these bits from the link
partner. Bits [31:0] correspond to page bits [47:16]
0x4CB 24:0 RO
AN LP ADV
Tech_A[24:0]
Received technology ability field bits of Clause 73 Auto
Negotiation. The 10GBASE-KR PHY supports A0 and A2. The
following protocols are defined:
• A0 1000BASE-KX
• A1 10GBASE-KX4
• A2 10GBASE-KR
• A3 40GBASE-KR4
• A4 40GBASE-CR4
• A5 100GBASE-CR10
• A24:6 are reserved
For more information, refer to Clause 73.6.4 and AN LP base
page ability registers (7.19-7.21) of Clause 45 of IEEE
802.3ap-2007.
26:25 RO
AN LP ADV FEC_F[1:0]
Received FEC ability bits FEC (F0:F1) is encoded in bits
D46:D47 of the base Link Codeword. F0 is FEC ability. F1 is
FEC requested. See Clause 73.6.5 of IEEE 802.3ap-2007 for
details.
27 RO
AN LP ADV Remote
Fault
Received Remote Fault (RF) ability bits. RF is encoded in bit
D13 of the base link codeword in Clause 73 AN. For more
information, refer to Clause 73.6.7 of IEEE 802.3ap-2007.
30:28 RO
AN LP ADV Pause
Ability_C[2:0]
Received pause ability bits. Pause (C0:C1) is encoded in bits
D11:D10 of the base link codeword in Clause 73 AN as
follows:
• C0 is the same as PAUSE as defined in Annex 28B
• C1 is the same as ASM_DIR as defined in Annex 28B
• C2 is reserved
0x4D0 0 RW
Link Training enable
When 1, enables the 10GBASE-KR start-up protocol. When 0,
disables the 10GBASE-KR start-up protocol. The default value
is 1. For more information, refer to Clause 72.6.10.3.1 and
10GBASE-KR PMD control register bit (1.150.1) of IEEE
802.3ap-2007.
1 RW
dis_max_wait_tmr When set to 1, disables the LT max_wait_timer. Used for
characterization mode when setting much longer BER timer
values. The default value is 0.
2 RW Reserved Reserved
3 RW Reserved Reserved
7:4 RW
main_step_cnt [3:0]
Specifies the number of equalization steps for each main tap
update. There are about 20 settings for the internal algorithm
to test. The valid range is 1-15. The default value is 4'b0001.
11:8 RW
prepost_step_cnt
[3:0]
Specifies the number of equalization steps for each pre- and
post-tap update. From 16-31 steps are possible. The default
value is 4'b0001.
0x4D0 14:12 RW
equal_cnt [2:0]
Adds hysteresis to the error count to avoid local minimums.
The following values are defined:
• 000 = 0
• 001 = 2
• 010 = 4
• 011 = 8
• 100 = 16
continued...
2. Implementing Protocols in Arria 10 Transceivers
UG-01143 | 2018.06.15
Intel
®
Arria
®
10 Transceiver PHY User Guide
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