User guide

10GBASE-KR Optional Parameters
Table 2-104: Optional Parameters
In the following table, the exact correspondence between numerical values and voltages is pending
characterization of the Native PHY.
Name Value Description
BERWIDTH Width of the Bit
Error Counter
4-10
This selection sets the size for the counter of errors
expected during each step of the link training. If the
number of errors exceeds this count for each step,
then an error is returned. The number of errors
depends upon the amount of time for each step and
the quality of the physical link/media. The default
value is 10.
PHY Management clock
(MGMT_CLK) frequency in
MHz
100-125
Determines the value of the Link Fail Inhibit timer
in IEEE 802.3 clause 73.10.2.
• 500 - 510 ms for BASE-R
• 40 – 50 ms for GbE, XAUI
The default value is 125.
VMAXRULE VOD tap MAX
Rule
0-31 Specifies the maximum V
OD
. The default value is 30.
VMINRULE Device VMIN Rule 0-31 Specifies the minimum V
OD
. The default value is 6.
VODMINRULE VOD tap MIN
Rule
0-31 Specifies the minimum V
OD
for the first tap. The
default value is 14.
VPOSTRULE 0-38 Specifies the maximum value that the internal
algorithm for pre-emphasis will ever test in
determining the optimum post-tap setting. The
default value is 25.
VPRERULE 0-31 Specifies the maximum value that the internal
algorithm for pre-emphasis will ever test in
determining the optimum pre-tap setting. The
default value is 16.
PREMAINVAL Preset VOD tap
Value
0-31 Specifies the Preset V
OD
value. This value is set by
the Preset command of the link training protocol,
defined in Clause 72.6.10.2.3.1 of the Link Training
protocol. This is the value from which the algorithm
starts. The default value is 30.
PREPOSTVAL 0-31 Specifies the preset Post-tap value. The default value
is 0.
PREPREVAL 0-15 Specifies the preset Pre-tap value. The default value
is 0.
2-132
10GBASE-KR Optional Parameters
UG-01143
2015.05.11
Altera Corporation
Implementing Protocols in Arria 10 Transceivers
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