Altera JNEye Manual do Utilizador descarregar pdf (Página 59)

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 receiver jitter parameters in the simulation.

• Characterization Data Access covers PVT variations. You can select the appropriate process, voltage,

and temperature conditions that best match the desired operation conditions.

• After clicking Characterization Data Access, JNEye is configured to use the characterization data by:

• Setting 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)

The JNEye simulation engine uses this 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

• Arria 10 GT: 3 Gbps to 28.3 Gbps

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, 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).

UG-1146

2015.05.04

Characterization Data Access

2-53

Functional Description

Altera Corporation

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