Altera Transceiver PHY IP Core User Manual
Page 62
Name
Value
Description
VMINRULE
0-63
Specifies the minimum V
OD
. The default value is 9
which represents 165 mV.
VODMINRULE
0-63
Specifies the minimum V
OD
for the first tap. The
default value is 22 which represents 440mV.
VPOSTRULE
0-31
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
0-15
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 15.
PREMAINVAL
0-63
Specifies the Preset V
OD
Value. Set by the Preset
command as 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 60.
PREPOSTVAL
0-31
Specifies the preset Pre-tap Value. The default value
is 0.
PREPREVAL
0-15
Specifies the preset Post-tap value. The default value
is 0.
INITMAINVAL
0-63
Specifies the Initial VOD Value. Set by the Initialize
command in Clause 72.6.10.2.3.2 of the link training
protocol. The default value is 35.
INITPOSTVAL
0-31
Specifies the initial first Post-tap value. The default
value is 14.
INITPREVAL
0-15
Specifies the Initial Pre-tap Value. The default value
is 3.
4-6
10GBASE-KR Link Training Parameters
UG-01080
2015.01.19
Altera Corporation
Backplane Ethernet 10GBASE-KR PHY IP Core with Early Access FEC Option