Intel Arria 10 User Manual page 190

Word Bit R/W
Addr
0x4D4 23 RO or
RW
29:24 RO
30 RO
0x4D5 4:0 R
13:8 R
20:16 R
0x4D5 27:24 R
29:28 R
31:30 R
0x4D6 4:0 RW
5 RW
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Intel Arria 10 Transceiver PHY User Guide
190
Name
When set to 1, the local device TX coefficients are set to a state
LP Preset
where equalization is turned off. Preset coefficients are used.
Coefficients
When set to 0, the local device operates normally. The function
and values of the preset bit are 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 10GBASE-KR LP
coefficient update register bits (1.152.13) in Clause 45.2.1.78.3
of IEEE 802.3ap-2007.
Status report register reflecting the contents of the second, 16-bit
LP coefficient
word of the training frame most recently received from the
status[5:0]
control channel. The following fields are defined:
•
•
•
For more information, refer to bit 10GBASE-KR LP status report
register bits (1.153.5:0) in Clause 45.2.1.79 of IEEE
802.3ap-2007.
When set to 1, the link partner receiver has determined that
LP Receiver ready
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 10GBASE-KR LP
status report register bits (1.153.15) in Clause 45.2.1.79 of IEEE
802.3ap-2007.
Stores the most recent V
LT V setting
OD
Link Partner commands to fine-tune the V
Stores the most recent post-tap setting that LT specified. It
LT Post-tap setting
reflects Link Partner commands to fine-tune the TX pre-emphasis
taps.
Stores the most recent pre-tap setting that LT specified. It
LT Pre-tap setting
reflects Link Partner commands to fine-tune the TX pre-emphasis
taps.
Most recent
RXEQ CTLE Setting
RX equalization.
Most recent
RXEQ CTLE Mode
during RX equalization.
Most recent
RXEQ DFE Mode
RX equalization.
Override value for the
LT VODMAX ovrd
value substitutes for the
override of the device settings. This only effects the local device
TX output for the channel specified.
This value must be greater than the
proper operation. Note this also overrides the
parameter value.
When set to 1, enables the override value for the
LT VODMAX ovrd
parameter stored in the
Enable
2. Implementing Protocols in Arria 10 Transceivers
Description
[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])
setting that LT specified. It reflects
OD
setting sent to the reconfig bundle during
ctle_rc
setting sent to the reconfig bundle
ctle_mode
setting sent to the reconfig bundle during
dfe_mode
VMAXRULE
VMAXRULE
LT VODMAX ovrd
UG-01143 | 2018.06.15
.
OD
parameter. When enabled, this
to allow channel-by-channel
parameter for
INITMAINVAL
PREMAINVAL
VMAXRULE
register field.
continued...