Altera JNEye - Manual (Page 51)

• Altera device receivers:
• Stratix V GX, Arria V GZ, Stratix V GT, Arria 10 GX/SX, and Arria 10 GT CTLE models are
embedded in JNEye.
• Both Auto and Manual settings are supported.
• In Manual setting, EQ Bandwidth, AC Gain, and DC Gain menus are shown for user selection.
• In Auto setting, you select the EQ bandwidth and maximum CTLE DC gain level (if available) that
you want to use.
• JNEye uses Altera’s proprietary algorithm to find optimal CTLE setting in Auto setting.
• Custom receiver and PCI-Express 8GT receiver—You can select or input the CTLE gain (in dB)
listed in the pull-down menu. The custom CTLE model uses the PCI-Express 8GT CTLE behavior
model template.
Note: If you are using the Arria 10 QPI mode, manually adjust the input waveform amplitude by a
constant factor of 0.4481 to get accurate QPI mode simulation results. The amplitude adjustment
can be applied on the transmitter output waveform amplitude or by using an amplitude scaling
channel component, such as an S-parameter, within a link. Following is an example of a 4-port
constant amplitude scaling S-parameter:
# MHz S DB R 50.00
0.000 -400 0 -6.9725 0 -400 0 -400 0
-6.9725 0 -400 0 -400 0 -400 0
-400 0 -400 0 -400 0 -6.9725 0
-400 0 -400 0 -6.9725 0 -400 0
10.0 -400 0 -6.9725 0 -400 0 -400 0
-6.9725 0 -400 0 -400 0 -400 0
-400 0 -400 0 -400 0 -6.9725 0
-400 0 -400 0 -6.9725 0 -400 0
100.0 -400 0 -6.9725 0 -400 0 -400 0
-6.9725 0 -400 0 -400 0 -400 0
-400 0 -400 0 -400 0 -6.9725 0
-400 0 -400 0 -6.9725 0 -400 0
1000.0 -400 0 -6.9725 0 -400 0 -400 0
-6.9725 0 -400 0 -400 0 -400 0
-400 0 -400 0 -400 0 -6.9725 0
-400 0 -400 0 -6.9725 0 -400 0
10000.0 -400 0 -6.9725 0 -400 0 -400 0
-6.9725 0 -400 0 -400 0 -400 0
-400 0 -400 0 -400 0 -6.9725 0
-400 0 -400 0 -6.9725 0 -400 0
100000.0 -400 0 -6.9725 0 -400 0 -400 0
-6.9725 0 -400 0 -400 0 -400 0
-400 0 -400 0 -400 0 -6.9725 0
-400 0 -400 0 -6.9725 0 -400 0
VGA Bandwidth
The VGA Bandwidth selection is available when an Arria 10 GX/SX/GT model is selected. The available
VGA bandwidth settings are listed in the pull-down menu. The default setting is 3 (highest bandwidth).
VGA Gain
The VGA Gain selection is available when an Arria 10 GX/SX/GT model is selected. The available VGA
gain settings are listed in the pull-down menu. If Auto (default setting) is selected, the VGA gain setting is
determined by the receiver model.
DFE Mode
The DFE can operate in Auto mode, Manual mode, or be disabled.
UG-1146
2015.05.04
Receiver Setting 2-45
Functional Description Altera Corporation
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