Altera Low Latency 40-Gbps Ethernet MAC and PHY MegaCore Function User Manual
Page 180
Word Addr
Bit
R/W
Name
Description
0x4D6
4:0
RW
LT VODMAX ovrd
Override value for the VMAXRULE parameter.
When enabled, this value substitutes for the
VMAXRULE to allow channel-by-channel
override of the device settings. This only effects the
local device TX output for the channel specified.
This value must be greater than the
INITMAINVAL parameter for proper operation.
Note this will also override the PREMAINVAL
parameter value.
5
RW
LT VODMAX ovrd
Enable
When set to 1, enables the override value for the
VMAXRULE parameter stored in the
LT VODMAX
ovrd
register field.
12:8
RW
LT VODMin ovrd
Override value for the VODMINRULE parameter.
When enabled, this value substitutes for the
VMINRULE to allow channel-by-channel override
of the device settings. This override only effects the
local device TX output for this channel.
The value to be substituted must be less than the
INITMAINVAL parameter and greater than the
VMINRULE parameter for proper operation.
13
RW
LT VODMin ovrd
Enable
When set to 1, enables the override value for the
VODMINRULE parameter stored in the
LT
VODMin ovrd
register field.
21:16
RW
LT VPOST ovrd
Override value for the VPOSTRULE parameter.
When enabled, this value substitutes for the
VPOSTRULE to allow channel-by-channel
override of the device settings. This override only
effects the local device TX output for this channel.
The value to be substituted must be greater than
the INITPOSTVAL parameter for proper
operation.
22
RW
LT VPOST ovrd
Enable
When set to 1, enables the override value for the
VPOSTRULE parameter stored in the
LT VPOST
ovrd
register field.
28:24
RW
LT VPre ovrd
Override value for the VPRERULE parameter.
When enabled, this value substitutes for the
VPOSTRULE to allow channel-by-channel
override of the device settings. This override only
effects the local device TX output for this channel.
The value to be substituted must be greater than
the INITPREVAL parameter for proper operation.
29
RW
LT VPre ovrd Enable
When set to 1, enables the override value for the
VPRERULE parameter stored in the
LT VPre
ovrd
register field.
UG-01172
2015.05.04
10GBASE-KR PHY Register Definitions
B-21
Arria 10 10GBASE-KR Registers
Altera Corporation