Intel Arria 10 User Manual page 159

2. Implementing Protocols in Arria 10 Transceivers
UG-01143 | 2018.06.15
Word Bit R/W
Addr
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
12:8 RW
Name
•
•
•
For more information, refer to 10G BASE-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 10G BASE-KR
LP status report register bits (1.153.15) in Clause 45.2.1.79
of IEEE 802.3ap-2007.
Stores the most recent TX V
LT V setting
OD
partner's RX based on the LT coefficient update logic driven
by Clause 72. It reflects Link Partner commands to fine-tune
the TX preemphasis taps.
Stores the most recent TX post-tap setting trained by the link
LT Post-tap setting
partner's RX based on the LT coefficient update logic driven
by Clause 72. It reflects Link Partner commands to fine-tune
the TX pre-emphasis taps.
Store the most recent TX pre-tap setting trained by the link
LT Pre-tap setting
partner's RX based on the LT coefficient update logic driven
by Clause 72. It reflects Link Partner commands to fine-tune
the TX pre-emphasis taps.
Most recent
RXEQ CTLE Setting
during RX equalization.
Most recent
RXEQ CTLE Mode
during RX equalization.
Most recent
RXEQ DFE Mode
during RX equalization.
Override value for the VMAXRULE parameter. When enabled,
LT VODMAX ovrd
this value substitutes for the VMAXRULE to allow channel-
by-channel override of the device settings. This only affects
the local device TX output for the channel specified.
This value must be greater than the INITMAINVAL
parameter for proper operation. Note this also overrides the
PREMAINVAL parameter value.
When set to 1, enables the override value for the VMAXRULE
LT VODMAX ovrd
parameter stored in the
Enable
Override value for the VODMINRULE parameter. When
LT VODMin ovrd
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.
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 trained by the link
OD
setting sent to the reconfig bundle
ctle_rc
setting sent to the reconfig bundle
ctle_mode
setting sent to the reconfig bundle
dfe_mode
LT VODMAX ovrd
® ®
Intel Arria
register field.
continued...
10 Transceiver PHY User Guide
159