Software Description
13
SNLU214A – July 2016 – Revised September 2019
Copyright © 2016–2019, Texas Instruments Incorporated
DS280DF810EVM User’s Guide
–
EQ boost table - If the user wishes to customize the sixteen value CTLE boost table:
•
The user can enter the desired values individually on the
CTLE Boost Settings
.
•
After entering all of the CTLE table values, the user should click on
Save as CTLE
button to
save the file.
•
This CTLE table file can be loaded for use with new devices by clicking
Load CTLE
and
selecting the file from its location.
–
DFE Controls
•
Upon landing on the
Rx EQ
tab, the
DFE Controls
section will display the current weight values
and polarities for the five DFE taps for the selected channel.
•
The user may check the
DFE Override
box to manually configure the DFE tap values.
•
The user may enable continuous DFE adaption by checking the corresponding box on the
DFE
Controls
section.
2.2.4.4
Cross-Point Switch
The cross-point tab allows the user to easily configure the 2x2 cross-point implemented for each of the
adjacent channel pairs of the DS280DF810 retimer.
•
With the
Pair Select
pull-down, the user can choose which cross-point pair to configure (0-1, 2-3, 4-5,
or 6-7.)
•
The cross-point mode is selected using the
Crosspoint Configuration
pull-down.
•
The cross-point channels mappings are illustrated on the
Crosspoint Settings
table on the page, and
the displayed color matches the current cross-point mode.
There are three cross-point configuration modes selectable via the
Crosspoint Configuration
pull-down:
•
Default
–
The transmitter for a given channel obtains data from its own receiver.
•
Fanout
–
Upon selecting the
Fanout
option on the pull-down, the user will be asked to select a channel on
the
Broadcast Channel
pull-down.
–
After the user selects the broadcast channel and clicks on
Broadcast
, the received data for the
selected channel will be output both on its Tx output and also on the Tx output of its cross-point
pair channel.
•
Lane Crossing
–
Upon selecting the
Lane Crossing
option, the GUI will automatically configure the cross-point pair in
question such that the Tx output of a given channel obtains its data from the Rx of its adjacent
cross-point pair channel