Altera JNEye User Manual
Page 42
Use the following guidelines for characterization data access:
• When Stratix V GX, Stratix V GT, Arria V GZ, or Arria 10 GX/SX/GT is selected, the Characteriza‐
tion Data Access button appears and you can include the transmitter jitter parameters in the
simulation.
• Altera Characterization Data Access covers PVT variations. You can select appropriate process,
voltage, and temperature conditions that best match the desired operation conditions.
• After clicking the button, Altera Characterization Data Access configures JNEye to use the characteri‐
zation data by:
• Selecting Jitter/Noise Component Mode for characterization data entries
• Setting the Jitter/Noise Data Lock check box
• Importing device characterization data based on the jitter unit selection
• RJ—Unit selection can be UI (RMS) or ps (RMS)
• Other Jitter—Unit selection can be UI (pk-pk), UI (pk), ps (pk-pk), or ps (pk)
These actions inform the JNEye simulation engine to use the characterization data from the database.
Note: • The characterization data is displayed in the text box for reference purposes. The JNEye
simulation engine uses proprietary algorithms to accurately model the jitter and noise in the
simulations.
• You can unlock the jitter and noise contents by turning off the Jitter/Noise Data Lock check
box. However, the jitter and noise models and values can be different from those when the
Jitter/Noise Data Lock check box is checked.
• Characterization Data Access is supported when the data rate is in the following range:
• Stratix V GX: 5 Gbps to 14.1 Gbps
• Stratix V GT: 19.6 Gbps to 28.1 Gbps
• Arria V GZ: 5 Gbps to 14.1 Gbps
• Arria V GX/SX: 3 Gbps to 17.4 Gbps (Typical PVT only)
• Arria 10 GT: 3 Gbps to 28.3 Gbps (Typical PVT only)
When the data rate is out of the specified range, JNEye displays a warning message and no jitter
data is retrieved. If you change the data rate, you must retrieve the new jitter data by clicking
Characterization Data Access.
• After changing the link and device configurations, such as data rate, VOD, PLL type and
bandwidth, and PVT condition, you must update the jitter value by clicking Characterization
Data Access.
• When the Jitter/Noise Data Lock check box is checked, JNEye examines whether the jitter data
matches the simulation configuration during the following conditions:
• Start simulation
• Save link configuration
• In batch simulation mode, jitter data is retrieved and calculated based on the link configura‐
tion
When the link configuration exceeds the supporting range of Characterization Data Access, a
warning message (conditions 1 and 2) is shown and jitter is reset (all conditions).
2-36
Characterization Data Access
UG-1146
2015.05.04
Altera Corporation
Functional Description