Altera JNEye User Manual
Page 52
• Altera receivers:
• Stratix V GX, Arria V GZ, Aria 10 GX/SX, and Arria 10 GT DFE models are supported in both
Auto mode and Manual mode.
• In Auto mode, JNEye finds the optimal DFE setting for the given link configuration.
• In Manual mode, you select and set each DFE tap level.
• For Arria 10 GX/SX/GT with floating DFE tap supports, a floating DFE tap location can be either
automatically or manually set. When automatic floating DFE tap location mode is selected, JNEye
uses proprietary algorithms to find the optimal floating DFE tap location.
• Custom receiver and PCI-Express receiver—JNEye implements a generic behavior DFE model. You
can customize the DFE model with the Receiver Options Window.
CDR Type and CDR Bandwidth
Select the type of Clock and Data Recovery (CDR) module used in the receiver. There are two options:
Ideal Clock and supported CDR type. When you select the ideal clock option, the eye diagram is plotted
using the ideal system clock. When you enable CDR, both ideal clocked and CDR retimed eye diagrams
are shown.
• Altera Receivers—Stratix V GX, Arria V GZ, Stratix V GT, Arria 10 GX/SX, and Arria 10 GT Hybrid
CDR models are supported. The CDR models and configurations are automatically set according to
the data rate and CDR bandwidth setting. Consult Altera design guides for CDR bandwidth configura‐
tions.
• Custom receiver and PCI-Express 8GT receiver—A generic CDR, with bang-bang phase detector, is
supported. The CDR bandwidth for the generic receiver is 18 MHz (low bandwidth), 26 MHz
(medium bandwidth), and 34 MHz (high bandwidth).
Supply Voltage
For supported devices, you can choose the supply voltage. In JNEye 15.0, the Arria 10 GX/SX/GT receiver
model provides the following supply voltages:
• Default-BP—Supply voltage for backplane applications that have a dependency on the data rate
setting
• Default-C2C—Supply voltage for chip-to-chip applications that have a dependency on the data rate
setting
• 0.9 V (Arria 10 GX/SX/GT)
• 1.0 V (Arria 10 GX/SX/GT)
• 1.1 V (Arria 10 GT)
V
cm
V
cm
is the common voltage of the receiver input signal. V
cm
options are only available when CTLE mode
is QPI.
PVT
Select the process, voltage, and temperature (PVT) models for the selected receiver device. PVT model
support varies depending on device type, device data availability, and model coverage. A message is
shown on the Receiver tab page to indicate the PVT model coverage. Receiver PVT model coverage and
conditions are shown in the following table.
2-46
Receiver Setting
UG-1146
2015.05.04
Altera Corporation
Functional Description