Altera JNEye Uživatelský manuál Strana 42

  • Stažení
  • Přidat do mých příruček
  • Tisk
  • Strana
    / 194
  • Tabulka s obsahem
  • KNIHY
  • Hodnocené. / 5. Na základě hodnocení zákazníků
Zobrazit stránku 41
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
Send Feedback
Zobrazit stránku 41
1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 193 194

Komentáře k této Příručce

Žádné komentáře